US20060198562A1 - Foldable insulated bag with trailing member - Google Patents
Foldable insulated bag with trailing member Download PDFInfo
- Publication number
- US20060198562A1 US20060198562A1 US11/071,585 US7158505A US2006198562A1 US 20060198562 A1 US20060198562 A1 US 20060198562A1 US 7158505 A US7158505 A US 7158505A US 2006198562 A1 US2006198562 A1 US 2006198562A1
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- US
- United States
- Prior art keywords
- bag
- panel
- edge
- sidewall
- foldable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C7/00—Collapsible or extensible purses, luggage, bags or the like
- A45C7/0059—Flexible luggage; Hand bags
- A45C7/0077—Flexible luggage; Hand bags collapsible to a minimal configuration, e.g. for storage purposes
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
- A45C11/20—Lunch or picnic boxes or the like
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C13/00—Details; Accessories
- A45C13/008—Details; Accessories for making water- or air-tight
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C13/00—Details; Accessories
- A45C13/02—Interior fittings; Means, e.g. inserts, for holding and packing articles
Definitions
- This invention relates to the field of foldable insulated containers.
- Collapsible insulated containers have been known for some years. They are typically used as containers for carrying cold drinks, and other cool refreshments, but can also be used keep foods or beverages warm or hot.
- coolers are better for some purposes than others.
- Some collapsible coolers can be folded to a collapsed position, but the folding process may tend to require relatively strong hands, since the insulated panels may be of fair thickness, and may have a resilience that tends to resist folding.
- These containers tend to unfold easily, but tend to be rather more difficult to fold back into the collapsed or storage position.
- the front and rear walls remain in generally parallel planar orientation while the bottom panel is folded up in half, and the side panels are folded inward as shown in my issued U.S. Pat. Des. 382,771.
- This kind of cooler is secured in the folded position (a) by a hook-and-eye fabric strip securement between the overfolded lip of the lid portion of the cooler and the front face of the cooler and (b) by side fastening straps that retain the bottom portions of the front panel relative to the back panel, typically by wrapping at least partially around the back panel and being secured thereto with hook-and-eye strips.
- Coolers of this nature tend to be generally cubic in shape with rectangular sides forming, typically, a six sided box shaped structure when unfolded.
- a cooler of this type may also tend to require more manufacturing steps than a more bag-like cooler, and may therefore be more costly and time consuming to produce.
- Rolling up a collapsible cooler in the manner in which a sleeping bag is sometimes rolled up, may tend not to be particularly satisfactory in all circumstances. Users may tend to roll up the insulated material too tightly, either damaging the material, or tending to give it a permanent set. This tight rolling approach may also tend to favour persons with relatively strong hands.
- cooler may be somewhat more convenient for rapid use, that may be more quickly and easily folded, or that may provide greater ease of manufacture, that may tend to pack efficiently for shipment, or that may present a relatively easily displayed product.
- a foldable insulated bag with trailing member comprising with an insulated wall structure, defining an insulated space therewithin.
- the wall structure when empty, is movable to a first. flattened position as well as being foldable about at least a portion of the forming panel to a folded storage position.
- the wall structure being securable in the folded storage position and there is also an undercarriage mounted to the insulated wall structure to facilitate towing thereof.
- the foldable insulated bag shows the undercarriage as being retractable.
- the foldable insulated bag as noted wherein the bag includes a retainer and the retainer being operable to secure the bag in the folded storage position.
- the foldable storage bag of has a bottom region and a top region, and a suspension member is mounted distantly from the bottom region.
- the foldable insulated bag with the forming panel includes a stiffener member.
- the foldable insulated bag with the forming panel has a flexural rigidity greater than any other portion of the bag.
- the foldable insulated bag with the forming panel has an insulating layer and a stiffening layer.
- the foldable insulated bag wherein the bag has a base panel and a sidewall structure mounted about the base panel, the forming panel being the base panel.
- the foldable insulated bag wherein the undercarriage is mounted to the base panel.
- the foldable insulated bag with the undercarriage includes wheels. This feature is also movable between an extended position and a retracted position, and includes a fitting operable to discourage accidental retraction of the undercarriage.
- the foldable insulated bag includes a retracted position retainer.
- the foldable insulated bag with the sidewall structure includes first and second opposed sidewall panels, each sidewall panel having a first edge adjoining the base panel and a second edge distant therefrom.
- the closure member being mounted to the distant edges.
- the foldable insulated bag with the first and second members of the retainer are mating hook-and-eye fabric strip portions.
- the foldable insulated bag with the sidewall structure includes first and second opposed sidewall panels, each of the sidewall panels having a first edge adjoining the base panel and a second edge distant therefrom
- the base panel has a periphery, the periphery including a first edge adjoining the first edge of the first sidewall panel, and a second edge adjoining the first edge of the second sidewall panel.
- the periphery including two opposed remainder portions between the first and second sides, the portions having lengths 2a 1 and 2a 2 respectively.
- the first edge of the first sidewall panel having a length.
- L and the first edge of the base panel having a length ‘b’; and the length L being at least as great as b+(a 1 +a 2 ).
- the foldable insulated bag with the first edge of the first sidewall panel is centered relative to the first edge of the base panel.
- the first edge of the first sidewall panel is centered relative to said first edge of the base panel.
- the forming panel includes a stiffener member.
- the forming panel has a flexural rigidity greater than any other portion of the bag.
- the forming panel has an insulating layer and a stiffening layer.
- the forming panel includes a stiffened straight edge
- the forming panel includes a pair of spaced apart, parallel stiffened straight edges.
- the bag has a base panel and a sidewall structure mounted about the base panel. The forming panel is the base panel.
- FIG. 1 shows a perspective view of an example of a foldable insulated bag of an embodiment of the present invention as carried by a user;
- FIG. 2 shows a perspective view of the bag of FIG. 1 as installed in the trunk of an automobile
- FIG. 3 a shows a perspective view of the bag of FIG. 1 as folded
- FIG. 3 b shows a front view of the bag of FIG. 3 a in a fully folded condition
- FIG. 3 c shows a rear view of the bag of FIG. 3 a in the fully folded condition
- FIG. 3 d shows a left hand end view of the bag of FIG. 3 a in the fully folded condition
- FIG. 3 e shows a right hand end view of the bag of FIG. 3 a in the fully folded condition
- FIG. 3 f shows a top view of the bag of FIG. 3 a in the fully folded condition
- FIG. 3 g shows a bottom view of the bag of FIG. 3 a in the fully folded condition
- FIG. 3 h shows the bag of FIG. 3 c with an alternate hang loop orientation
- FIG. 4 a shows a perspective view of the unfolded bag of FIG. 1 ;
- FIG. 4 b shows a front view of the bag of FIG. 4 a in a fully unfolded condition
- FIG. 4 c shows a rear view of the bag of FIG. 4 a in the fully unfolded condition
- FIG. 4 d shows a left hand end view of the bag of FIG. 4 a in the fully unfolded condition
- FIG. 4 e shows a right hand end view of the bag of FIG. 4 a in the fully unfolded condition
- FIG. 4 f shows a top view of the bag of FIG. 4 a in the fully unfolded condition
- FIG. 4 g shows a bottom view of the bag of FIG. 4 a in the fully unfolded condition
- FIG. 5 shows a cross sectional view of the bag of FIG. 1 , taken abeam of the handles (with the handles not shown);
- FIG. 6 a shows a front view of the bag of FIG. 1 in a partially folded condition
- FIG. 6 b shows a rear view of the bag of FIG. 6 a
- FIG. 6 c shows a left hand end view of the bag of FIG. 6 a
- FIG. 6 d shows a right handed view of the bag of FIG. 6 a
- FIG. 7 a shows a perspective view of the bag of FIG. 1 in an open condition with a liner thereof in an inverted position to facilitate washing thereof;
- FIG. 7 b shows a perspective view of the bag of FIG. 1 in an open condition
- FIG. 8 shows a developed view of panels of the bag of FIG. 1 prior to assembly
- FIG. 9 a shows a developed view of a bottom panel for an alternate embodiment of the foldable insulated bag of FIG. 1 ;
- FIG. 9 b shows a developed view of a side panel for an alternate embodiment of the foldable insulated bag of FIG. 1 ;
- FIG. 10 a shows an isometric view of a single fold, alternate insulated bag to that of FIG. 1 ;
- FIG. 10 b shows a front view of the insulated bag of FIG. 10 a in a folded condition
- FIG. 10 c shows a rear view of the insulated bag of FIG. 10 a in a folded condition
- FIG. 10 d shows a left hand end view of the insulated bag of FIG. 10 a
- FIG. 10 e shows a right hand end view of the insulated bag of FIG. 10 a
- FIG. 10 f shows a top view of the insulated bag of FIG. 10 a
- FIG. 10 g shows a bottom view of the insulated bag of FIG. 10 a
- FIG. 11 a shows a partially unfolded front view of a triple fold alternate insulated bag to that of FIG. 1 ;
- FIG. 11 b shows a front view of the insulated bag of FIG. 11 a in a folded condition
- FIG. 11 c shows a rear view of the insulated bag of FIG. 11 a in a folded condition
- FIG. 11 d shows a left hand end view of the insulated bag of FIG. 11 a;
- FIG. 11 e shows a right hand end view of the insulated bag of FIG. 11 a
- FIG. 11 f shows a top view of the insulated bag of FIG. 11 a
- FIG. 11 g shows a bottom view of the insulated bag of FIG. 11 a
- FIG. 12 a shows a perspective view from above, in front and to the left of an alternate embodiment of foldable insulated bag to that of FIG. 1 ;
- FIG. 12 b shows a perspective view of the insulated bag of FIG. 12 a from below, in front and to the right;
- FIG. 12 c shows a front view of the insulated bag of FIG. 12 a
- FIG. 12 d shows a rear view of the insulated bag of FIG. 12 a
- FIG. 12 e shows a right hand side view of the insulated bag of FIG. 12 a
- FIG. 12 f shows a left hand side view of the insulated bag of FIG. 12 a
- FIG. 12 g shows a top view of the bag of FIG. 12 a
- FIG. 12 h shows a bottom view of the insulated bag of FIG. 12 a
- FIG. 13 a is a perspective view of the insulated bag of FIG. 12 a in a folded condition
- FIG. 13 b is a top view of the insulated bag of FIG. 13 a;
- FIG. 13 c is a view looking from the main fold toward the top of the bag of FIG. 13 a;
- FIG. 13 d is a side view of the bag of FIG. 13 a;
- FIG. 14 a shows a front perspective view of the bag of FIG. 13 a in a laid out, flat condition
- FIG. 14 b is a rear perspective view of the bag of FIG. 14 a;
- FIG. 14 c is a front view of the laid out bag of FIG. 14 a;
- FIG. 14 d is a rear view of the laid out bag of FIG. 14 a;
- FIG. 15 a shows a perspective view of the bag of FIG. 14 a with undercarriage members in a deployed or extended position;
- FIG. 15 b shows an end view of the bag of FIG. 15 a
- FIG. 15 c shows a side view detail of the bag of FIG. 15 a
- FIG. 15 d shows a perspective view of a detail of the undercarriage of the bag of FIG. 15 a in a stored or retracted position
- FIG. 15 e shows a perspective view of a detail of the undercarriage of FIG. 15 a in the extended position
- FIG. 15 f shows an enlarged side view of a detail of the bag of FIG. 12 a standing on its undercarriage.
- the largest panels of the bags herein described are arbitrarily designated as the front and rear sides, faces, or portions of the bag.
- the closure member, or opening of the bag is arbitrarily designated as being at the top
- the base panel is designated as being at the bottom.
- cooler, or cooler container, or cooler bag such insulated structures may generally also be used to keep food, beverages, or other objects either warm or hot as well as cool, cold, or frozen.
- an example of a portable, collapsible soft sided, insulated wall structure is identified as a foldable cooler tote bag 20 .
- This structure can be referred to as an insulated bag, an insulated container, a cooler, or such like.
- the basic structure of bag 20 includes a first side panel, or wall, or sidewall, arbitrarily designated front panel 22 , a second side panel, or wall, or sidewall, designated arbitrarily as rear panel 24 , and a third panel or wall identified as a bottom, or base panel 26 .
- these panels are joined together to form a pouch, or bag, having an enclosed internal space 25 surrounded by insulated walls.
- the enclosed volume of internal space 25 varies with the condition of the bag.
- the internal volume is negligibly small, if not zero.
- bag 20 when bag 20 is in an unfolded condition, or expanded position, it may tend to take on a shape to accommodate objects placed within the internal space, and it may assume a suitably capacious internal volume.
- closure member 28 When bag 20 is in use, access to the internal volume, namely internal space 25 thereof, is governed by a closure member 28 .
- closure member 28 may be a linear tracked closure device in the nature of a zipper assembly 30 mounted between the upper margins of the side wall panels, namely front and rear panels 22 and 24 .
- Other kinds of closures could be used such as a Velcro (t.m.) hook-and-eye fabric closure, a series of spaced apart snaps, a continuous mating plastic tongue and groove or other device.
- a relatively robust zipper assembly is preferred, as it may tend to provide a simple, quick, and relatively strong closure.
- bag 20 can be made water-tight by other means, it is preferred to provide a liner 32 that can be either sewn in place, or it may be removable, or it may be wholly or partially invertible.
- a liner that is at least partially invertible, or removable, is preferred, since this may facilitate washing.
- the bag When the bag is not in use, it may tend to be readily foldable. First, the bag is collapsed by being laid flat, and then folding front sidewall panel 22 near its bottom margin, such that base panel 26 may lie in a more or less flat orientation relative to the rear sidewall panel, 24 , as seen in FIGS. 6 a and 6 b .
- the upward edge 36 of base panel 26 acts as a former, or form, for bending the body of bag 20 to define a first fold by rotating the folded part of the bag in the direction of arrow ‘A’ (counter-clockwise in the Figures, but arbitrary since it would be clockwise if viewed from the other direction, and bag 20 can be made with either a left handed or right handed fold).
- This permits one portion of bag 20 to fold over on another portion, in the manner of folding a page over on itself.
- bag 20 When page-folded in the direction of arrow ‘A’, bag 20 will arrive at the folded position shown in FIGS. 3 a - 3 g , in which position it is held by a securement member, or retainer, identified as 34 , which may take the form of a pair of mating securement strips such as hook-and-eye velcro (t.m.) strips 38 and 40 mounted, respectively, to the upper body portion of front side panel 22 adjacent the upper margin thereof, and to the distal margin region of base panel 26 that is distant from the forming edge of base panel 26 , such that when base panel 26 is overfolded in the direction of arrow ‘A’ strips 38 and 40 are brought into mating contact in a single relatively uncomplicated, and possibly quite swift motion.
- a securement member, or retainer identified as 34 , which may take the form of a pair of mating securement strips such as hook-and-eye velcro (t.m.) strips 38 and 40 mounted, respectively, to the upper body portion of front side panel 22
- a soft sided insulated container that has been collapsed, and then panel-folded over on itself (i.e., not scrunched into a tight roll) to a flat folded position, or flat folded condition, such as may be suitable, for example, for stacking, transport, display or storage.
- Display and storage is facilitated by a suspension member 42 , in the nature of a hang loop 44 , mounted generally centrally along the upper margin of front panel 22 . To the extent that loop 44 is mounted higher than the center of gravity of bag 20 more generally, bag 20 will tend to hang with the upper margin of front panel 22 in a generally horizontal orientation.
- An alternate hang loop location is shown in FIG.
- hang loop 44 is located at an end edge such that, when displayed for sale, bag 20 may tend to hang in a vertical, or substantially vertical orientation, namely with the long dimension (as folded) running up and down, i.e., more or less vertically.
- Unfolding may tend to be a similarly uncomplicated and convenient procedure: the retainers are released, the bag is unfolded and it is ready to accommodate objects that need to stay cool or warm.
- lifting members in the nature of handles, or straps 46 , 48 that extend from the upper regions of the sidewall panels, namely panels 22 and 24 can be grasped to lift bag 20 , and may, as illustrated in FIG. 1 , be found suitable for carrying over a person's shoulder. Alternatively, or additionally, as illustrated in FIG.
- bag 20 is provided with auxiliary securement devices 50 , 52 , such as may be in the nature of velcro straps, to engage the felt-like or fibrous mat interior of an automobile, especially an automobile trunk, or boot, or cargo carrying area of a station wagon, van, or sports or utility vehicle.
- Securement devices 50 , 52 may tend to be used to discourage a loaded bag 20 from tipping over when travelling, such as when bringing cold items home from the grocery store, or such as when transporting refreshments to a campsite, picnic site, playing field, or arena.
- the side panels namely insulated front and rear panels 22 and 24
- the side panels are of the same size and shape, and are generally rectangular. They have a breadth dimension indicated as ‘X’ measured along either the upper or lower marginal edges 54 , 56 , and a height dimension indicated as ‘Y’, measured perpendicular to dimension ‘X’, along the side edges 58 , 60 .
- Insulated base panel 26 is also generally rectangular, having a long dimension measured along long edges 62 , 64 and indicated generally as ‘b’ and a short dimension measured along the short end edges 66 , 68 , indicated generally as ‘w’.
- the half width of the panel is identified as ‘a 1 ’, and is equal to half of ‘w’.
- the ratio of the half width ‘a’ to the length ‘b’ may tend to be in the range of less than about 1:2 and greater than about 1:16, or within the narrower range of less than about 2:5 and greater than about 1:8, or within the preferable range of less than about 1:3 and greater than about 1:6.
- the ratio may be about 31 ⁇ 4:111 ⁇ 2 ⁇ 2 in another particular example the ratio may be about 31 ⁇ 4:151 ⁇ 2, and in a third particular example the ratio may be about 31 ⁇ 4:171 ⁇ 4.
- the width of base panel 26 may also be related to the overall height of bag 20 when unfolded. That is, retainer strip 40 on the off-side of base panel 26 may mate with strip 38 on front panel 22 of bag 20 at a region close to the upper edge 70 of bag 20 generally, to yield a neatly folded bag for efficient packing, shipping and display. To that end, with allowance for a bend radius, it is preferred that the height of bag 20 be within +/ ⁇ 20%, and more preferably within +/ ⁇ 10%, of an integer multiple of the width of base panel 26 . It is also preferred that bag 20 be a double or triple folded bag. While bags with a greater number of folds are possible, the benefits of ease of manufacture, ease of folding, and ease of use may not necessarily tend to be as marked for a larger number of folds.
- each of the side panels 22 and 24 is longer than the long dimension ‘b’ of the bottom, or base panel 26 , such that when the closure member is secured, bag 20 may tend to have an upwardly broadening profile when viewed from the side and an upwardly narrowing profile when viewed from the end.
- the periphery of base panel 26 is equal to 2(2a 1 +b).
- Each of the side wall panels, namely front and rear panels 22 and 24 has a lower, or bottom edge, 56 noted above.
- Each of these bottom edges 56 extends about one half of the periphery of base panel 26 , having a central portion of length ‘b’ and two opposite end portions, each of length ‘a 1 ’, or thereabout.
- a triangular end fold will be created, made up of the triangular folds 72 of the bottom corners of the side wall panels, those triangular portions being indicated as triangular regions 74 in FIG. 8 , and being bounded by fold lines 76 , 78 .
- front and rear panels 22 , 24 are sewn together along their upwardly extending edges 58 , 60 , the central portions of their bottom edges 56 are sewn to the long sides, or edges 62 , 64 of base panel 26 , and the end portions are sewn to the half-width portions of end edges 66 , 68 of base panel 26 .
- the closure member 28 has the form of zipper assembly 30 as noted above.
- Zipper assembly 30 has a first side region 84 , a second side region 86 , and a zipper 88 .
- Side region 84 has an outboard, or distal edge seamed into front panel 22 , and an inboard edge, or margin, to which one set of teeth of zipper 88 is mounted.
- Side region 86 has an outboard, or distal edge that is seamed into rear panel 24 , and an inboard edge along which the other set of teeth of zipper 88 is mounted. In the usual manner, motion of zipper car 90 along the track defined by the zipper teeth controls the opening and closing of the zipper assembly, and hence controls access to the enclosed space 25 of bag 20 more generally, thereby permitting objects to be introduced into, or to be drawn out of, bag 20 .
- Side regions 84 and 86 each have an upper, load bearing web member 92 , 94 and an inner wall member 96 , 98 .
- inner wall members 96 , 98 may be reflective, or have a reflective inwardly facing (i.e., inward relative to the enclosed space 25 of bag 20 so that the reflective surface is oriented toward objects contained in bag 20 ) surface, and may preferably be made of “thermoflect” (t.m.) material.
- inner wall members 96 , 98 is a white, water proof nylon sheet. The seaming of the side region of zipper assembly 30 occurs at a height downset from the very edge of the side wall panels by a distance ⁇ 1 roughly equal to the half width ⁇ 2 of zipper assembly 30 such that when bag 20 is folded, side regions 84 and 86 may tend to fold next to those margins, rather than to protrude excessively.
- the overall width of the web-like region, or panel, formed by zipper assembly 30 is less than, if not significantly less than, the width of panel 26 , such that the through thickness of bag 20 at the elevation of closure member 28 is small, if not very small, relative to the length of closure member 28 , and relative to the length of upper marginal edge 54 . It is preferred that the overall width of the closure member be less than 60% of the width of the base, and, in a particular example, is about half the width. As such, the ratio of through thickness to bag length may be about a 2 /(2a 2 +b). This value may typically lie in the range of 1:5 to 1:8 and more narrowly in the range of 1:6 to 1:71 ⁇ 2.
- the closure member is mounted between the upper margins of the side wall panels, namely panels 22 and 24 , and, when open, permits at least central portions of those margins to be moved closer together or further apart as may be desired to give access to the enclosed chamber.
- Each of sidewall panels 22 , 24 has a relatively wear resistant outer membrane or sheet, or web 80 , that may be made of a sheet or woven webbing fabric, such as woven nylon, canvas, or other suitable cloth.
- Each of sidewall panels 22 , 24 also has an inner sidewall membrane, or sheet, or web 82 , that may function as a water proof lining, and may be made of a sheet of extruded plastic of the types of polymers that include vinyl (t.m.) or nylon (t.m.), or sheets of monolithic extruded vinyl (t.m.) or nylon (t.m.) sewn together.
- Insulating layer 84 is trapped between the inner and outer webs 82 and 80 .
- Insulating layer 84 may preferably be a closed cell polyurethane foam, but could be an open cell insulating foam, or other type of insulating layer, or it may include more than one insulating layer.
- the inner sidewall web member may either be made of a reflective material, such as thermoflect (t.m.) sheeting, or may have a reflective surface oriented to face toward objects contained within bag 20 .
- inner web 82 member may be made of a water proof extruded nylon or vinyl sheet, or seamed sheets, to discourage leakage of-liquids from bag 20 .
- water-proof liner 32 may be included, in addition to the internal sidewall web sheet, namely, web 82 .
- the liner may preferably be translucent, or clear, to permit the reflective surface of the inner wall to be seen.
- the liner can be rigidly sewn in place to prevent the liner from being inverted, it is preferable for the liner to be either removable, or to be sewn in at its upper peripheral edges, thus permitting at least partial inversion of the liner as shown in FIG. 7 a , and hence to facilitate washing.
- the optional liner 32 may be made from a single polymer sheet, have a first side region 84 and a second side region 86 .
- the side regions are heat welded along their side margins to form a pouch, or pocket, commensurate with the general site and shape of the inside of bag 20 , and have their upper margins seamed into the side-walls of bag 20 at the juncture with the side regions of zipper assembly 30 .
- Bag 20 will then tend to be water-proof to a height corresponding to the height of closure member 28 .
- a soft sided insulated wall assembly for use as a cooler, such as bag 20 may be generally leak resistant and may be water-proof.
- the cross-sectional structure of base panel 26 is generally similar to the cross-sectional structure of the sidewall panels, having an inner wall skin, or panel or web 114 that is of consistent construction to the inner wall sheet or web 82 , and an outer wall skin, or web 116 that is of consistent construction to outer web 80 .
- the outer web 80 may not be the same colour as outer web 116 , and may not be of the same weave or fabric. It may have a heavier, more wear resistant fabric, or coarser, more wear resistant weave, since base panel 26 may tend to be placed in contact with the ground, or other underlying surface whether a paved roadway, concrete, rocks, earth, flooring, or some other support surface against which it may be expected to be slid, or to rub, in the course of use.
- Base panel 26 may also have an insulated layer, 118 , captured between webs 114 and 116 , the insulated layer being made of an insulated foam or other suitable heat transfer resistive medium as described above.
- base panel 26 has a stiffened form member 120 that may be in the nature of a rectangular, hard plastic sheet 100 of modest thickness located between insulating layer 118 and outer web 116 .
- Sheet 100 in plan view, has dimensions that are the same as. or roughly the same as, dimensions ‘b’ and ‘w’.
- Form member 128 serves two functions, the first being to provide a stiffened base upon which bag 20 can tend preferentially to stand, and which may tend to aid in discouraging bag 20 from tipping over as easily as it might otherwise do.
- the second is to provide a forming edge to base 26 by which to pre-determine the fold line, or lines, at which bag 20 will tend to want to bend when being folded up. This may tend to discourage the tight-rolling of bag 20 , and to encourage repeatable panel folding to and from the convenient folded form shown in FIGS. 3 a - 3 g.
- Form member 120 need not be a continuous monolithic panel. It could be an open frame, or a peripheral member sewn in place to provide a reinforced edge. In one embodiment, even without form member 120 , the seaming at the edge of insulated base panel 26 may tend to yield a natural fold location at which bag 20 may tend to prefer to bend or fold. The inclusion of member 120 may tend to strengthen or to enhance this tendency. Modestly sized feet, stand offs, or pads, 102 , may optionally be provided to the underside of panel 26 . Further, form member 120 may, by itself.
- Lifting members, or carrying members in the nature of straps, or web bands 46 , 48 are sewn up the outside faces of side wall panels 22 and 24 , having their roots at the seamed junction between bottom panel 26 and the side all panels 22 , 24 .
- Each of bands 46 , 48 has a central portion 104 , 106 that extends upwardly beyond the upper margins of the sidewall panels to provide a grasping, or carrying portion that can be held or place over a user's shoulder, as in FIG. 1 .
- Auxiliary securement straps 50 , 52 have a root end sewn into the upper region of the seam between panels 22 and 24 , at a height near the height of closure member 28 .
- the distal ends of straps 50 , 52 bear velcro patches 110 , suitable for securing in to the trunk fabric of an automobile (or, alternatively, mating velcro patches can be mounted inside the automobile for this purpose).
- the ends of straps 50 , 52 mount to mating velcro patches 112 located on the outward face of front side panel 22 . Straps 110 could as easily be oriented to face in the other direction, and to mate with patches sewn on rear panel 24 .
- an alternate insulated base panel 126 has the same structural and thermal properties as base panel 26 in general, but differs in that rather than being rectangular in plan view, base panel 126 has a length, or long dimension, indicated as ‘b 2 ’ and a width indicated as ‘w’. These dimensions need not be the same as ‘b’ and ‘w’ indicated above, but may be.
- the ends of panel 126 are not squared, but rather are mitred at an angle ⁇ relative to the perpendicular to the long edges. The length along each of the mitred edges is then given as ‘a 2 ’.
- the half width of base panel 126 is not a 2 but rather a 2 cos ⁇ .
- the periphery of base panel 126 is 2(b 2 +2a 2 ).
- the adjoining side panels are again taken to be ‘X’ wide, and ‘Y’ high, and to be of the same general insulated construction as side wall panels 22 and 24 , as shown, for example, in FIG. 5 .
- the length of the lower margin 124 of each of the adjoining side panels 126 is then (b 2 +2a 2 ).
- Each panel will then have a “large fold” 128 and a “small fold” 130 .
- Large fold 128 is a nominal indication of where there would be a fold in the side wall of the bag in the fully unfolded condition ready for filling with diverse objects, if a sharp crease were made.
- the corner will not be creased, but rather will tend to take on a more rounded, or radiused form, and the bag will tend to conform to the shape and bulkiness of objects placed in it, so the actual corner of the bag may have a bulging appearance rather than a sharp corer.
- Small fold 130 indicates the actual location of a told that is made when the bag is in a collapsed state and folded for storage.
- the angle ⁇ 1 of small fold 130 when the bag is folded for storage, will then tend be roughly equal to the bisector of the angle between the extension of the horizontal fold line defined by the edge of base 126 and the mitred edge, namely 1 ⁇ 2(90 ⁇ ).
- Base panel 126 need not necessarily be a straight sided polygon, as is base panel 26 , but could have somewhat rounded, oval or irregular ends. However, in such a case the end fold may tend to be puckered, and may tend not to lie as flat as might otherwise be considered desirable or preferable. However, a straight sided polygon is advantageous, and a square-cornered (i.e., rectangular) end is preferred since it may tend to facilitate manufacture and efficient use of materials and reduced waste cuts.
- Bag 20 is a “double fold” bag. That is, base panel 26 is folded flat at a first fold (the offside edge of base panel 26 ), and then side panels 22 and 24 are bent about the second fold (the nearside edge of base 26 ).
- a soft sided, collapsible and foldable insulate single-fold bag could be produced, or a triple-fold, or more, bag could be produced.
- FIGS. 10 a - 10 g An example of a single fold bag 140 is shown in FIGS. 10 a - 10 g , the views corresponding generally to the views of double fold bag 20 shown in FIGS. 3 a - 3 g respectively. Except as otherwise indicated, bag 140 has the same general construction as bag 20 , having insulated side wall panels 142 , 144 , and an insulated base panel 146 , with a similar closure member 148 and optional liner similar to liner 32 . Bag 140 differs from bag 20 in being a single fold bag, rather than a double fold bag, and has changes in dimension and aspect ratios accordingly.
- a retention member 150 may be mounted near the lower margin of the front panel 142
- another, mating, retention member 152 may be mounted near the upper edge of the front panel, the two mating when the base panel is moved to a collapsed position in which it is laid over against side panel 142 .
- FIGS. 11 a - 11 g An example of a triple fold bag 160 is shown in FIGS. 11 a - 11 g .
- FIG. 11 a shows triple fold bag 160 in a collapsed, or flattened condition immediately prior to folding into the storage position (or, alternatively and equivalently, immediately after being unfolded, and before filling).
- Bag 160 is presented as being symbolic of not only a bag having three folds. In general, for a bag, such as bag 160 , having three or more folds, the retention member 178 would be located on the front face 164 , roughly the width of two folded panel regions below the upper edge of the front face with the second retention member being mounted near or at the upper edge, such that, when folded the two parts 178 and 174 would tend to mate.
- An example of a single fold bag is illustrated in FIG. 10 a .
- An example of a triple fold bag is shown in FIG. 11 a.
- the side panels of bag 20 need not be made from rectangular sheets, but could be made from sheets that are of a different shape. such as the trapezoidal side panel sheets 180 .
- the resultant bag 182 would tend to have an upper edge 184 for which the length L 2 would tend to be greater than the sum of the b+2a i , or, put generically, where L i is greater than half the total periphery of the base panel 186 . This may tend to yield a more flared appearance when the bag is seen in an unfolded side view, and may tend to yield a larger access opening, such as may permit objects of greater relative size to be introduced into the insulated spaced.
- bag 200 may include first and second insulated panel members 202 , 204 as before, such as may have an inside lining 82 , an outside covering 80 and a layer of insulation 84 between lining 82 and covering 80 . That layer of insulation 84 may be an open or closed cell foam.
- bag 200 may include a base panel 212 having the same construction as described above, including a stiffening batten 120 such as may be located between an outside covering layer 116 and insulation layer 118 .
- bag 200 may be taken as having substantially the same basic shape and construction as bag 20 and the other alternate embodiments of bags described above.
- bag 200 may differ from the other bags described herein to the extent that bag 200 may have mounted to base panel 212 a trailing apparatus 220 , such as may permit bag 200 to be pulled in train, rather than carried clear of the ground. That is to say, bag 200 may include one or more ground interface members 224 , 226 operable to permit bag 200 to be drawn over a surface. Those ground interface members may be part of an undercarriage 230 , which may include one or more rolling contact members, such as wheels 232 , 234 , which may be mounted to wheel mounts in the nature of shafts or axles 236 , 238 .
- undercarriage 230 may be retractable. That is, wheels 232 and 234 on axles 236 , 238 may be movable between a deployed, or down, position suitable for supporting bag 200 while in motion (such as shown for example, in FIGS. 12 a - 12 f and 15 f ); and a retracted, or up, position, such as when bag 200 is folded in a storage condition, or is resting in a location in which members for facilitating travel of bag 200 are not required (such as shown, for example, in FIGS. 13 a - 13 d and 14 a - 14 c ).
- Undercarriage 230 may also include support members, such as may be in the nature of rests, or stand-offs, or props or struts, such as may be identified as a foot or feet 240 . These supports (or support, as may be) may be co-operable with the trailing members, such as wheels 232 , 234 to provide a base upon which bag 200 more generally may rest when in the unfolded and opened out condition for carrying articles. When bag 200 is towed, bag 20 may tend to have an inclined attitude relative to the axis of rotation of wheels 232 , 234 , and when so inclined, feet 240 may tend to be lifted clear of the ground (or other surface) upon which wheels 232 , 234 may roll.
- support members such as may be in the nature of rests, or stand-offs, or props or struts, such as may be identified as a foot or feet 240 .
- feet 240 and axles 236 , 238 are formed from a continuous member 242 , such as a rod or wire, bent at one end to form a foot 240 , and formed at the other end to define axle 236 or 238 , as may be.
- Each member of undercarriage 230 may also include a stationary mount member or housing 244 , connected to base panel 212 , and into which member 242 is mounted in spring loaded biased engagement.
- Mount member 242 may include detent formations, such as at 246 and 248 , into which member 242 is biased in the retracted and deployed positions respectively.
- Wheels 232 , 234 are axially reciprocal, with the shafts, namely axles 236 , 238 being mounted in spring loaded sockets of housings 244 . These sockets may require an axial pull and an angular rotation to overcome the detent in order to deploy wheels 232 and 234 , and may be biased to the “down” position unless held in the up position be the detent.
- folding may be in the accordion manner, as opposed to roll folding described above.
- a temporary, releasable securement 250 such as may be in the nature of a hook and eye fastening member, may be mounted to the lower margin 252 of the adjacent side, and a mating hook and eye fastener 254 may be mounted to the facing portion of the side above the first fold as indicated at 256 .
- a half fold crease 258 is located on the lower margin of the other side, permitting the bottom panel to fold flat a full fold. When fully folded, with the wheels retracted, the package may be hung on a display hanger or stored in a comparatively compact package.
- Unfolding may generally proceed from the fully folded position, or condition, of FIG. 13 a , to the unfolded position of FIG. 14 a , in which bag 200 may be in a generally flat condition, to FIG. 15 a , in which the wheels are moved to a deployed position, to FIG. 12 a , in which bag 200 is filled, and has its wheels down, ready for pulling.
- the undercarriage assembly may include skids, skis or runners in place of wheels, and in those embodiments the long axis of the skids, skis, or runners may be oriented perpendicular to the axis of rotation of wheels 232 , 234 .
Abstract
A Foldable Insulated Container may be made of a three piece assembly of a base, a front wall and a rear wall. The base may include a reinforcement such as may tend to urge the base to retain a substantially planar orientation, and which may aid in folding the insulated bag. The insulated bag may include a trailing member. The trailing member may be attached to the base. The trailing member may include wheels. The trailing member, or apparatus, may include a retractable wheeled undercarriage.
Description
- This invention relates to the field of foldable insulated containers.
- Collapsible insulated containers have been known for some years. They are typically used as containers for carrying cold drinks, and other cool refreshments, but can also be used keep foods or beverages warm or hot.
- Certain sizes and shapes of coolers are better for some purposes than others. Some collapsible coolers can be folded to a collapsed position, but the folding process may tend to require relatively strong hands, since the insulated panels may be of fair thickness, and may have a resilience that tends to resist folding. These containers tend to unfold easily, but tend to be rather more difficult to fold back into the collapsed or storage position. In the folded position, the front and rear walls remain in generally parallel planar orientation while the bottom panel is folded up in half, and the side panels are folded inward as shown in my issued U.S. Pat. Des. 382,771. This kind of cooler is secured in the folded position (a) by a hook-and-eye fabric strip securement between the overfolded lip of the lid portion of the cooler and the front face of the cooler and (b) by side fastening straps that retain the bottom portions of the front panel relative to the back panel, typically by wrapping at least partially around the back panel and being secured thereto with hook-and-eye strips. Coolers of this nature tend to be generally cubic in shape with rectangular sides forming, typically, a six sided box shaped structure when unfolded. A cooler of this type may also tend to require more manufacturing steps than a more bag-like cooler, and may therefore be more costly and time consuming to produce.
- Rolling up a collapsible cooler, in the manner in which a sleeping bag is sometimes rolled up, may tend not to be particularly satisfactory in all circumstances. Users may tend to roll up the insulated material too tightly, either damaging the material, or tending to give it a permanent set. This tight rolling approach may also tend to favour persons with relatively strong hands.
- It may be that a different kind of cooler is desired that may be somewhat more convenient for rapid use, that may be more quickly and easily folded, or that may provide greater ease of manufacture, that may tend to pack efficiently for shipment, or that may present a relatively easily displayed product.
- It may also be that it would be helpful to have a cooler that folds in a continuous direction, or that folds back and forth, on a folding panel basis rather than in a continuous tight roll like a sleeping bag. Optionally, it may be helpful to have members that facilitate towing of the bag.
- In an aspect of the invention there is a foldable insulated bag with trailing member comprising with an insulated wall structure, defining an insulated space therewithin. A wall structure having a closure member operable to govern access to the insulated space and a wall structure including a forming panel. The wall structure, when empty, is movable to a first. flattened position as well as being foldable about at least a portion of the forming panel to a folded storage position. The wall structure being securable in the folded storage position and there is also an undercarriage mounted to the insulated wall structure to facilitate towing thereof.
- In another feature, the foldable insulated bag shows the undercarriage as being retractable. The foldable insulated bag as noted wherein the bag includes a retainer and the retainer being operable to secure the bag in the folded storage position. In another feature, the foldable storage bag of has a bottom region and a top region, and a suspension member is mounted distantly from the bottom region. In further feature, the foldable insulated bag with the forming panel includes a stiffener member. In another feature, the foldable insulated bag with the forming panel has a flexural rigidity greater than any other portion of the bag. In yet another feature, the foldable insulated bag with the forming panel has an insulating layer and a stiffening layer.
- In another feature, the foldable insulated bag wherein the bag has a base panel and a sidewall structure mounted about the base panel, the forming panel being the base panel. In yet another feature, the foldable insulated bag wherein the undercarriage is mounted to the base panel. In further feature, the foldable insulated bag with the undercarriage includes wheels. This feature is also movable between an extended position and a retracted position, and includes a fitting operable to discourage accidental retraction of the undercarriage. The foldable insulated bag includes a retracted position retainer.
- In another feature, the foldable insulated bag with the sidewall structure includes first and second opposed sidewall panels, each sidewall panel having a first edge adjoining the base panel and a second edge distant therefrom. The closure member being mounted to the distant edges. The foldable insulated bag with the first and second members of the retainer are mating hook-and-eye fabric strip portions.
- In another aspect of the invention, the foldable insulated bag with the sidewall structure includes first and second opposed sidewall panels, each of the sidewall panels having a first edge adjoining the base panel and a second edge distant therefrom The base panel has a periphery, the periphery including a first edge adjoining the first edge of the first sidewall panel, and a second edge adjoining the first edge of the second sidewall panel. The periphery including two opposed remainder portions between the first and second sides, the
portions having lengths - In a further feature, the foldable insulated bag with the first edge of the first sidewall panel is centered relative to the first edge of the base panel.
- In still another feature of the foldable insulated bag with trailing member, the first edge of the first sidewall panel is centered relative to said first edge of the base panel. In still another additional feature, the forming panel includes a stiffener member. In yet still another additional feature, the forming panel has a flexural rigidity greater than any other portion of the bag. In yet another additional feature, the forming panel has an insulating layer and a stiffening layer. In a further additional feature, the forming panel includes a stiffened straight edge In still a further additional feature, the forming panel includes a pair of spaced apart, parallel stiffened straight edges. In yet a further additional feature, the bag has a base panel and a sidewall structure mounted about the base panel. The forming panel is the base panel.
- These and other aspects of the invention may be more readily understood with the aid of the illustrative Figures and detailed description included herein below.
- The illustrations of an example, or examples, of insulated bags embodying the various aspects and features noted, being provided by way of illustration, but not of limitation include the following Figures:
-
FIG. 1 shows a perspective view of an example of a foldable insulated bag of an embodiment of the present invention as carried by a user; -
FIG. 2 shows a perspective view of the bag ofFIG. 1 as installed in the trunk of an automobile; -
FIG. 3 a shows a perspective view of the bag ofFIG. 1 as folded; -
FIG. 3 b shows a front view of the bag ofFIG. 3 a in a fully folded condition; -
FIG. 3 c shows a rear view of the bag ofFIG. 3 a in the fully folded condition; -
FIG. 3 d shows a left hand end view of the bag ofFIG. 3 a in the fully folded condition; -
FIG. 3 e shows a right hand end view of the bag ofFIG. 3 a in the fully folded condition; -
FIG. 3 f shows a top view of the bag ofFIG. 3 a in the fully folded condition; -
FIG. 3 g shows a bottom view of the bag ofFIG. 3 a in the fully folded condition; -
FIG. 3 h shows the bag ofFIG. 3 c with an alternate hang loop orientation; -
FIG. 4 a shows a perspective view of the unfolded bag ofFIG. 1 ; -
FIG. 4 b shows a front view of the bag ofFIG. 4 a in a fully unfolded condition; -
FIG. 4 c shows a rear view of the bag ofFIG. 4 a in the fully unfolded condition; -
FIG. 4 d shows a left hand end view of the bag ofFIG. 4 a in the fully unfolded condition; -
FIG. 4 e shows a right hand end view of the bag ofFIG. 4 a in the fully unfolded condition; -
FIG. 4 f shows a top view of the bag ofFIG. 4 a in the fully unfolded condition; -
FIG. 4 g shows a bottom view of the bag ofFIG. 4 a in the fully unfolded condition; -
FIG. 5 shows a cross sectional view of the bag ofFIG. 1 , taken abeam of the handles (with the handles not shown); -
FIG. 6 a shows a front view of the bag ofFIG. 1 in a partially folded condition; -
FIG. 6 b shows a rear view of the bag ofFIG. 6 a; -
FIG. 6 c shows a left hand end view of the bag ofFIG. 6 a; -
FIG. 6 d shows a right handed view of the bag ofFIG. 6 a; -
FIG. 7 a shows a perspective view of the bag ofFIG. 1 in an open condition with a liner thereof in an inverted position to facilitate washing thereof; -
FIG. 7 b shows a perspective view of the bag ofFIG. 1 in an open condition; -
FIG. 8 shows a developed view of panels of the bag ofFIG. 1 prior to assembly; -
FIG. 9 a shows a developed view of a bottom panel for an alternate embodiment of the foldable insulated bag ofFIG. 1 ; -
FIG. 9 b shows a developed view of a side panel for an alternate embodiment of the foldable insulated bag ofFIG. 1 ; -
FIG. 10 a shows an isometric view of a single fold, alternate insulated bag to that ofFIG. 1 ; -
FIG. 10 b shows a front view of the insulated bag ofFIG. 10 a in a folded condition; -
FIG. 10 c shows a rear view of the insulated bag ofFIG. 10 a in a folded condition; -
FIG. 10 d shows a left hand end view of the insulated bag ofFIG. 10 a; -
FIG. 10 e shows a right hand end view of the insulated bag ofFIG. 10 a; -
FIG. 10 f shows a top view of the insulated bag ofFIG. 10 a; -
FIG. 10 g shows a bottom view of the insulated bag ofFIG. 10 a; -
FIG. 11 a shows a partially unfolded front view of a triple fold alternate insulated bag to that ofFIG. 1 ; -
FIG. 11 b shows a front view of the insulated bag ofFIG. 11 a in a folded condition; -
FIG. 11 c shows a rear view of the insulated bag ofFIG. 11 a in a folded condition; -
FIG. 11 d shows a left hand end view of the insulated bag ofFIG. 11 a; -
FIG. 11 e shows a right hand end view of the insulated bag ofFIG. 11 a; -
FIG. 11 f shows a top view of the insulated bag ofFIG. 11 a; -
FIG. 11 g shows a bottom view of the insulated bag ofFIG. 11 a; -
FIG. 12 a shows a perspective view from above, in front and to the left of an alternate embodiment of foldable insulated bag to that ofFIG. 1 ; -
FIG. 12 b shows a perspective view of the insulated bag ofFIG. 12 a from below, in front and to the right; -
FIG. 12 c shows a front view of the insulated bag ofFIG. 12 a; -
FIG. 12 d shows a rear view of the insulated bag ofFIG. 12 a; -
FIG. 12 e shows a right hand side view of the insulated bag ofFIG. 12 a; -
FIG. 12 f shows a left hand side view of the insulated bag ofFIG. 12 a; -
FIG. 12 g shows a top view of the bag ofFIG. 12 a; -
FIG. 12 h shows a bottom view of the insulated bag ofFIG. 12 a; -
FIG. 13 a is a perspective view of the insulated bag ofFIG. 12 a in a folded condition; -
FIG. 13 b is a top view of the insulated bag ofFIG. 13 a; -
FIG. 13 c is a view looking from the main fold toward the top of the bag ofFIG. 13 a; -
FIG. 13 d is a side view of the bag ofFIG. 13 a; -
FIG. 14 a shows a front perspective view of the bag ofFIG. 13 a in a laid out, flat condition; -
FIG. 14 b is a rear perspective view of the bag ofFIG. 14 a; -
FIG. 14 c is a front view of the laid out bag ofFIG. 14 a; -
FIG. 14 d is a rear view of the laid out bag ofFIG. 14 a; -
FIG. 15 a shows a perspective view of the bag ofFIG. 14 a with undercarriage members in a deployed or extended position; -
FIG. 15 b shows an end view of the bag ofFIG. 15 a; -
FIG. 15 c shows a side view detail of the bag ofFIG. 15 a; -
FIG. 15 d shows a perspective view of a detail of the undercarriage of the bag ofFIG. 15 a in a stored or retracted position; -
FIG. 15 e shows a perspective view of a detail of the undercarriage ofFIG. 15 a in the extended position; -
FIG. 15 f shows an enlarged side view of a detail of the bag ofFIG. 12 a standing on its undercarriage. - The description that follows, and the embodiments described therein, are provided by way of illustration of an example. or examples, of particular embodiments of the principles of the present invention. These examples are provided for the purposes of explanation, and not of limitation, of those principles and of the invention. In the description, like parts are marked throughout the specification and the drawings with the same respective reference numerals. The drawings are not necessarily to scale and in some instances proportions may have been exaggerated in order more clearly to depict certain features of the invention.
- For the purposes of this description, the largest panels of the bags herein described are arbitrarily designated as the front and rear sides, faces, or portions of the bag. Similarly, the closure member, or opening of the bag is arbitrarily designated as being at the top, and the base panel is designated as being at the bottom. It should also be understood that, within the normal range of temperatures to which human food and human touch is accustomed, although the term cooler, or cooler container, or cooler bag, may be used, such insulated structures may generally also be used to keep food, beverages, or other objects either warm or hot as well as cool, cold, or frozen.
- As seen in the Figures, an example of a portable, collapsible soft sided, insulated wall structure is identified as a foldable
cooler tote bag 20. This structure can be referred to as an insulated bag, an insulated container, a cooler, or such like. The basic structure ofbag 20 includes a first side panel, or wall, or sidewall, arbitrarily designatedfront panel 22, a second side panel, or wall, or sidewall, designated arbitrarily asrear panel 24, and a third panel or wall identified as a bottom, orbase panel 26. As described more fully below, these panels are joined together to form a pouch, or bag, having an enclosedinternal space 25 surrounded by insulated walls. The enclosed volume ofinternal space 25 varies with the condition of the bag. That is, while the bag is in a folded (that is, collapsed) condition or position, or is lying flat, the internal volume is negligibly small, if not zero. However, whenbag 20 is in an unfolded condition, or expanded position, it may tend to take on a shape to accommodate objects placed within the internal space, and it may assume a suitably capacious internal volume. - When
bag 20 is in use, access to the internal volume, namelyinternal space 25 thereof, is governed by aclosure member 28. In the illustrated example,closure member 28 may be a linear tracked closure device in the nature of azipper assembly 30 mounted between the upper margins of the side wall panels, namely front andrear panels - While
bag 20 can be made water-tight by other means, it is preferred to provide aliner 32 that can be either sewn in place, or it may be removable, or it may be wholly or partially invertible. A liner that is at least partially invertible, or removable, is preferred, since this may facilitate washing. - When the bag is not in use, it may tend to be readily foldable. First, the bag is collapsed by being laid flat, and then folding
front sidewall panel 22 near its bottom margin, such thatbase panel 26 may lie in a more or less flat orientation relative to the rear sidewall panel, 24, as seen inFIGS. 6 a and 6 b. In this, collapsed, generally flattened, position, theupward edge 36 of base panel 26 (namely the edge that is folded towardfront sidewall panel 22 and hence toward what would normally be the upper parts ofbag 20 generally) acts as a former, or form, for bending the body ofbag 20 to define a first fold by rotating the folded part of the bag in the direction of arrow ‘A’ (counter-clockwise in the Figures, but arbitrary since it would be clockwise if viewed from the other direction, andbag 20 can be made with either a left handed or right handed fold). This permits one portion ofbag 20 to fold over on another portion, in the manner of folding a page over on itself. - When page-folded in the direction of arrow ‘A’,
bag 20 will arrive at the folded position shown inFIGS. 3 a-3 g, in which position it is held by a securement member, or retainer, identified as 34, which may take the form of a pair of mating securement strips such as hook-and-eye velcro (t.m.) strips 38 and 40 mounted, respectively, to the upper body portion offront side panel 22 adjacent the upper margin thereof, and to the distal margin region ofbase panel 26 that is distant from the forming edge ofbase panel 26, such that whenbase panel 26 is overfolded in the direction of arrow ‘A’ strips 38 and 40 are brought into mating contact in a single relatively uncomplicated, and possibly quite swift motion. The result is a soft sided insulated container that has been collapsed, and then panel-folded over on itself (i.e., not scrunched into a tight roll) to a flat folded position, or flat folded condition, such as may be suitable, for example, for stacking, transport, display or storage. Display and storage is facilitated by asuspension member 42, in the nature of ahang loop 44, mounted generally centrally along the upper margin offront panel 22. To the extent thatloop 44 is mounted higher than the center of gravity ofbag 20 more generally,bag 20 will tend to hang with the upper margin offront panel 22 in a generally horizontal orientation. An alternate hang loop location is shown inFIG. 3 h, in which hangloop 44 is located at an end edge such that, when displayed for sale,bag 20 may tend to hang in a vertical, or substantially vertical orientation, namely with the long dimension (as folded) running up and down, i.e., more or less vertically. - Unfolding may tend to be a similarly uncomplicated and convenient procedure: the retainers are released, the bag is unfolded and it is ready to accommodate objects that need to stay cool or warm. When unfolded, lifting members in the nature of handles, or straps 46, 48 that extend from the upper regions of the sidewall panels, namely
panels bag 20, and may, as illustrated inFIG. 1 , be found suitable for carrying over a person's shoulder. Alternatively, or additionally, as illustrated inFIG. 2 ,bag 20 is provided withauxiliary securement devices Securement devices bag 20 from tipping over when travelling, such as when bringing cold items home from the grocery store, or such as when transporting refreshments to a campsite, picnic site, playing field, or arena. - Considering the construction of
bag 20 in greater detail, reference is made to the developed views ofpanels FIG. 8 . In the developed views shown in the example ofFIG. 8 , the side panels, namely insulated front andrear panels marginal edges -
Insulated base panel 26 is also generally rectangular, having a long dimension measured alonglong edges - The width of
base panel 26 may also be related to the overall height ofbag 20 when unfolded. That is,retainer strip 40 on the off-side ofbase panel 26 may mate withstrip 38 onfront panel 22 ofbag 20 at a region close to theupper edge 70 ofbag 20 generally, to yield a neatly folded bag for efficient packing, shipping and display. To that end, with allowance for a bend radius, it is preferred that the height ofbag 20 be within +/−20%, and more preferably within +/−10%, of an integer multiple of the width ofbase panel 26. It is also preferred thatbag 20 be a double or triple folded bag. While bags with a greater number of folds are possible, the benefits of ease of manufacture, ease of folding, and ease of use may not necessarily tend to be as marked for a larger number of folds. - The upper edge, i.e., upper
marginal edge 54, of each of theside panels base panel 26, such that when the closure member is secured,bag 20 may tend to have an upwardly broadening profile when viewed from the side and an upwardly narrowing profile when viewed from the end. In the embodiment ofFIG. 8 , the periphery ofbase panel 26 is equal to 2(2a1+b). Each of the side wall panels, namely front andrear panels bottom edges 56 extends about one half of the periphery ofbase panel 26, having a central portion of length ‘b’ and two opposite end portions, each of length ‘a1’, or thereabout. In this instance whenbag 20 is collapsed, andbottom panel 26 is laid flat, a triangular end fold will be created, made up of the triangular folds 72 of the bottom corners of the side wall panels, those triangular portions being indicated astriangular regions 74 inFIG. 8 , and being bounded byfold lines - When assembled, front and
rear panels edges bottom edges 56 are sewn to the long sides, or edges 62, 64 ofbase panel 26, and the end portions are sewn to the half-width portions of end edges 66, 68 ofbase panel 26. Theclosure member 28 has the form ofzipper assembly 30 as noted above.Zipper assembly 30 has afirst side region 84, asecond side region 86, and azipper 88.Side region 84 has an outboard, or distal edge seamed intofront panel 22, and an inboard edge, or margin, to which one set of teeth ofzipper 88 is mounted.Side region 86 has an outboard, or distal edge that is seamed intorear panel 24, and an inboard edge along which the other set of teeth ofzipper 88 is mounted. In the usual manner, motion ofzipper car 90 along the track defined by the zipper teeth controls the opening and closing of the zipper assembly, and hence controls access to the enclosedspace 25 ofbag 20 more generally, thereby permitting objects to be introduced into, or to be drawn out of,bag 20.Side regions web member inner wall member inner wall members space 25 ofbag 20 so that the reflective surface is oriented toward objects contained in bag 20) surface, and may preferably be made of “thermoflect” (t.m.) material. In another embodiment,inner wall members zipper assembly 30 occurs at a height downset from the very edge of the side wall panels by a distance δ1 roughly equal to the half width δ2 ofzipper assembly 30 such that whenbag 20 is folded,side regions - The overall width of the web-like region, or panel, formed by
zipper assembly 30 is less than, if not significantly less than, the width ofpanel 26, such that the through thickness ofbag 20 at the elevation ofclosure member 28 is small, if not very small, relative to the length ofclosure member 28, and relative to the length of uppermarginal edge 54. It is preferred that the overall width of the closure member be less than 60% of the width of the base, and, in a particular example, is about half the width. As such, the ratio of through thickness to bag length may be about a2/(2a2+b). This value may typically lie in the range of 1:5 to 1:8 and more narrowly in the range of 1:6 to 1:7½. The closure member is mounted between the upper margins of the side wall panels, namelypanels - The sidewall construction is as shown in
FIG. 5 . Each ofsidewall panels web 80, that may be made of a sheet or woven webbing fabric, such as woven nylon, canvas, or other suitable cloth. Each ofsidewall panels web 82, that may function as a water proof lining, and may be made of a sheet of extruded plastic of the types of polymers that include vinyl (t.m.) or nylon (t.m.), or sheets of monolithic extruded vinyl (t.m.) or nylon (t.m.) sewn together. - An insulating
layer 84 is trapped between the inner andouter webs layer 84 may preferably be a closed cell polyurethane foam, but could be an open cell insulating foam, or other type of insulating layer, or it may include more than one insulating layer. - As above, in one embodiment the inner sidewall web member may either be made of a reflective material, such as thermoflect (t.m.) sheeting, or may have a reflective surface oriented to face toward objects contained within
bag 20. Alternatively,inner web 82 member may be made of a water proof extruded nylon or vinyl sheet, or seamed sheets, to discourage leakage of-liquids frombag 20. - Optionally, water-
proof liner 32 may be included, in addition to the internal sidewall web sheet, namely,web 82. Where the inner sidewall surface is reflective, the liner may preferably be translucent, or clear, to permit the reflective surface of the inner wall to be seen. Although the liner can be rigidly sewn in place to prevent the liner from being inverted, it is preferable for the liner to be either removable, or to be sewn in at its upper peripheral edges, thus permitting at least partial inversion of the liner as shown inFIG. 7 a, and hence to facilitate washing. Theoptional liner 32 may be made from a single polymer sheet, have afirst side region 84 and asecond side region 86. The side regions are heat welded along their side margins to form a pouch, or pocket, commensurate with the general site and shape of the inside ofbag 20, and have their upper margins seamed into the side-walls ofbag 20 at the juncture with the side regions ofzipper assembly 30.Bag 20 will then tend to be water-proof to a height corresponding to the height ofclosure member 28. A soft sided insulated wall assembly for use as a cooler, such asbag 20, may be generally leak resistant and may be water-proof. - The cross-sectional structure of
base panel 26 is generally similar to the cross-sectional structure of the sidewall panels, having an inner wall skin, or panel orweb 114 that is of consistent construction to the inner wall sheet orweb 82, and an outer wall skin, orweb 116 that is of consistent construction toouter web 80. It may be noted that theouter web 80 may not be the same colour asouter web 116, and may not be of the same weave or fabric. It may have a heavier, more wear resistant fabric, or coarser, more wear resistant weave, sincebase panel 26 may tend to be placed in contact with the ground, or other underlying surface whether a paved roadway, concrete, rocks, earth, flooring, or some other support surface against which it may be expected to be slid, or to rub, in the course of use. -
Base panel 26 may also have an insulated layer, 118, captured betweenwebs base panel 26 has a stiffenedform member 120 that may be in the nature of a rectangular, hardplastic sheet 100 of modest thickness located between insulatinglayer 118 andouter web 116.Sheet 100, in plan view, has dimensions that are the same as. or roughly the same as, dimensions ‘b’ and ‘w’.Form member 128 serves two functions, the first being to provide a stiffened base upon whichbag 20 can tend preferentially to stand, and which may tend to aid in discouragingbag 20 from tipping over as easily as it might otherwise do. The second is to provide a forming edge to base 26 by which to pre-determine the fold line, or lines, at whichbag 20 will tend to want to bend when being folded up. This may tend to discourage the tight-rolling ofbag 20, and to encourage repeatable panel folding to and from the convenient folded form shown inFIGS. 3 a-3 g. -
Form member 120 need not be a continuous monolithic panel. It could be an open frame, or a peripheral member sewn in place to provide a reinforced edge. In one embodiment, even withoutform member 120, the seaming at the edge ofinsulated base panel 26 may tend to yield a natural fold location at whichbag 20 may tend to prefer to bend or fold. The inclusion ofmember 120 may tend to strengthen or to enhance this tendency. Modestly sized feet, stand offs, or pads, 102, may optionally be provided to the underside ofpanel 26. Further,form member 120 may, by itself. tend to have a greater flexural stiffness that the adjacent layer of insulated material, and when taken together the resultant bi-laminar, or possibly multi-layered assembly, has a combined flexural stillness that may tend to be significantly stiffer than any other portion ofbag 20. - Lifting members, or carrying members in the nature of straps, or
web bands side wall panels bottom panel 26 and the side allpanels bands central portion FIG. 1 . - Auxiliary securement straps 50, 52 have a root end sewn into the upper region of the seam between
panels closure member 28. The distal ends ofstraps bear velcro patches 110, suitable for securing in to the trunk fabric of an automobile (or, alternatively, mating velcro patches can be mounted inside the automobile for this purpose). When not in use, the ends ofstraps front side panel 22.Straps 110 could as easily be oriented to face in the other direction, and to mate with patches sewn onrear panel 24. - In the alternate embodiment of
FIG. 9 a, an alternateinsulated base panel 126 has the same structural and thermal properties asbase panel 26 in general, but differs in that rather than being rectangular in plan view,base panel 126 has a length, or long dimension, indicated as ‘b2’ and a width indicated as ‘w’. These dimensions need not be the same as ‘b’ and ‘w’ indicated above, but may be. In this case the ends ofpanel 126 are not squared, but rather are mitred at an angle α relative to the perpendicular to the long edges. The length along each of the mitred edges is then given as ‘a2’. In this case the half width ofbase panel 126 is not a2 but rather a2 cos α. The periphery ofbase panel 126 is 2(b2+2a2). - The adjoining side panels are again taken to be ‘X’ wide, and ‘Y’ high, and to be of the same general insulated construction as
side wall panels FIG. 5 . The length of thelower margin 124 of each of the adjoiningside panels 126 is then (b2+2a2). Each panel will then have a “large fold” 128 and a “small fold” 130.Large fold 128 is a nominal indication of where there would be a fold in the side wall of the bag in the fully unfolded condition ready for filling with diverse objects, if a sharp crease were made. In actual use, the corner will not be creased, but rather will tend to take on a more rounded, or radiused form, and the bag will tend to conform to the shape and bulkiness of objects placed in it, so the actual corner of the bag may have a bulging appearance rather than a sharp corer.Small fold 130 indicates the actual location of a told that is made when the bag is in a collapsed state and folded for storage. - The angle β1 of
small fold 130, when the bag is folded for storage, will then tend be roughly equal to the bisector of the angle between the extension of the horizontal fold line defined by the edge ofbase 126 and the mitred edge, namely ½(90−α). -
Base panel 126 need not necessarily be a straight sided polygon, as isbase panel 26, but could have somewhat rounded, oval or irregular ends. However, in such a case the end fold may tend to be puckered, and may tend not to lie as flat as might otherwise be considered desirable or preferable. However, a straight sided polygon is advantageous, and a square-cornered (i.e., rectangular) end is preferred since it may tend to facilitate manufacture and efficient use of materials and reduced waste cuts. -
Bag 20 is a “double fold” bag. That is,base panel 26 is folded flat at a first fold (the offside edge of base panel 26), and then sidepanels - An example of a
single fold bag 140 is shown inFIGS. 10 a-10 g, the views corresponding generally to the views ofdouble fold bag 20 shown inFIGS. 3 a-3 g respectively. Except as otherwise indicated,bag 140 has the same general construction asbag 20, having insulatedside wall panels insulated base panel 146, with asimilar closure member 148 and optional liner similar toliner 32.Bag 140 differs frombag 20 in being a single fold bag, rather than a double fold bag, and has changes in dimension and aspect ratios accordingly. In place of the arrangement ofretainer 34, aretention member 150 may be mounted near the lower margin of thefront panel 142, and another, mating,retention member 152 may be mounted near the upper edge of the front panel, the two mating when the base panel is moved to a collapsed position in which it is laid over againstside panel 142. - An example of a
triple fold bag 160 is shown inFIGS. 11 a-11 g.FIG. 11 a showstriple fold bag 160 in a collapsed, or flattened condition immediately prior to folding into the storage position (or, alternatively and equivalently, immediately after being unfolded, and before filling).Bag 160 is presented as being symbolic of not only a bag having three folds. In general, for a bag, such asbag 160, having three or more folds, theretention member 178 would be located on thefront face 164, roughly the width of two folded panel regions below the upper edge of the front face with the second retention member being mounted near or at the upper edge, such that, when folded the twoparts FIG. 10 a. An example of a triple fold bag is shown inFIG. 11 a. - In the examples discussed so far, the upper edge of a bag having rectangular sidewall panels is Li=2(ai+bi), whether i is 1 or 2. As shown in
FIG. 9 b, the side panels ofbag 20 need not be made from rectangular sheets, but could be made from sheets that are of a different shape. such as the trapezoidalside panel sheets 180. In this case, theresultant bag 182 would tend to have anupper edge 184 for which the length L2 would tend to be greater than the sum of the b+2ai, or, put generically, where Li is greater than half the total periphery of thebase panel 186. This may tend to yield a more flared appearance when the bag is seen in an unfolded side view, and may tend to yield a larger access opening, such as may permit objects of greater relative size to be introduced into the insulated spaced. - Another alternate embodiment of foldable insulated container, identified as
insulated bag 200 is shown inFIGS. 12 a through 15 e. In this example,bag 200 may include first and secondinsulated panel members inside lining 82, anoutside covering 80 and a layer ofinsulation 84 between lining 82 and covering 80. That layer ofinsulation 84 may be an open or closed cell foam. Further,bag 200 may include abase panel 212 having the same construction as described above, including a stiffening batten 120 such as may be located between anoutside covering layer 116 andinsulation layer 118. Assuch bag 200 may be taken as having substantially the same basic shape and construction asbag 20 and the other alternate embodiments of bags described above. - However,
bag 200 may differ from the other bags described herein to the extent thatbag 200 may have mounted to base panel 212 a trailingapparatus 220, such as may permitbag 200 to be pulled in train, rather than carried clear of the ground. That is to say,bag 200 may include one or moreground interface members bag 200 to be drawn over a surface. Those ground interface members may be part of anundercarriage 230, which may include one or more rolling contact members, such aswheels axles - In one embodiment,
undercarriage 230 may be retractable. That is,wheels axles bag 200 while in motion (such as shown for example, inFIGS. 12 a-12 f and 15 f); and a retracted, or up, position, such as whenbag 200 is folded in a storage condition, or is resting in a location in which members for facilitating travel ofbag 200 are not required (such as shown, for example, inFIGS. 13 a-13 d and 14 a-14 c). -
Undercarriage 230 may also include support members, such as may be in the nature of rests, or stand-offs, or props or struts, such as may be identified as a foot orfeet 240. These supports (or support, as may be) may be co-operable with the trailing members, such aswheels bag 200 more generally may rest when in the unfolded and opened out condition for carrying articles. Whenbag 200 is towed,bag 20 may tend to have an inclined attitude relative to the axis of rotation ofwheels feet 240 may tend to be lifted clear of the ground (or other surface) upon whichwheels feet 240 andaxles continuous member 242, such as a rod or wire, bent at one end to form afoot 240, and formed at the other end to defineaxle undercarriage 230 may also include a stationary mount member orhousing 244, connected tobase panel 212, and into whichmember 242 is mounted in spring loaded biased engagement.Mount member 242 may include detent formations, such as at 246 and 248, into whichmember 242 is biased in the retracted and deployed positions respectively.Wheels housings 244. These sockets may require an axial pull and an angular rotation to overcome the detent in order to deploywheels - For
bag 200, folding may be in the accordion manner, as opposed to roll folding described above. To that end, a temporary,releasable securement 250, such as may be in the nature of a hook and eye fastening member, may be mounted to thelower margin 252 of the adjacent side, and a mating hook andeye fastener 254 may be mounted to the facing portion of the side above the first fold as indicated at 256. Similarly, ahalf fold crease 258 is located on the lower margin of the other side, permitting the bottom panel to fold flat a full fold. When fully folded, with the wheels retracted, the package may be hung on a display hanger or stored in a comparatively compact package. - Unfolding may generally proceed from the fully folded position, or condition, of
FIG. 13 a, to the unfolded position ofFIG. 14 a, in whichbag 200 may be in a generally flat condition, toFIG. 15 a, in which the wheels are moved to a deployed position, toFIG. 12 a, in whichbag 200 is filled, and has its wheels down, ready for pulling. - In other embodiments, the undercarriage assembly may include skids, skis or runners in place of wheels, and in those embodiments the long axis of the skids, skis, or runners may be oriented perpendicular to the axis of rotation of
wheels - Although various the embodiments have been described and illustrated, the principles of the present invention are not limited to these specific examples, which are given by way of illustration. Since changes in or additions to the above-described embodiments, or both, may be made without departing from the nature, spirit or scope of the invention, the invention is not to be limited to those details.
Claims (18)
1. A foldable insulated bag comprising:
an insulated wall structure, defining an insulated space therewithin;
said wall structure having a closure member operable to govern access to said insulated space; and
said wall structure including a forming panel;
said wall structure, when empty, being movable to a first. flattened position;
said wall structure being foldable about at least a portion of said forming panel to a folded storage position;
said wall structure being securable in said folded storage position; and
an undercarriage mounted to said insulated wall structure to facilitate towing thereof.
2. The foldable insulated bag of claim 1 wherein said undercarriage is retractable.
3. The foldable insulated bag of claim 1 wherein said bag includes a retainer, said retainer being operable to secure said bag in said folded storage position.
4. The foldable insulated bag of claim 1 wherein said bag has a bottom region and a top region, and a suspension member is mounted distantly from said bottom region.
5. The foldable insulated bag of claim 1 wherein said forming panel includes a stiffener member.
6. The foldable insulated bag of claim 1 wherein said forming panel has a flexural rigidity greater than any other portion of said bag.
7. The foldable insulated bag of claim 1 wherein said forming panel has an insulating layer and a stiffening layer.
8. The foldable insulated bag of claim 1 wherein said bag has a base panel and a sidewall structure mounted about said base panel, said forming panel being said base panel.
9. The foldable insulated bag of claim 8 wherein said undercarriage is mounted to said base panel.
10. The foldable insulated bag of claim 1 wherein said undercarriage includes wheels.
11. The foldable insulated bag of claim 1 wherein said undercarriage is movable between an extended position and a retracted position, and includes a fitting operable to discourage accidental retraction of said undercarriage.
12. The foldable insulated bag of claim 1 wherein said undercarriage includes a retracted position retainer.
13. The foldable insulated bag of claim 8 wherein said sidewall structure includes first and second opposed sidewall panels, each sidewall panel having a first edge adjoining said base panel and a second edge distant therefrom. said closure member being mounted to said distant edges.
14. The foldable insulated bag of claim 13 wherein said first and second members of said retainer are mating hook-and-eye fabric strip portions.
15. The foldable insulated bag of claim 10 wherein:
said sidewall structure includes first and second opposed sidewall panels, each said sidewall panel having a first edge adjoining said base panel and a second edge distant therefrom;
said base panel has a periphery, said periphery including a first edge adjoining said first edge of said first sidewall panel, and a second edge adjoining said first edge of said second sidewall panel;
said periphery including two opposed remainder portions between said first and second sides, said portions having lengths 2a1 and 2a2 respectively;
said first edge of said first sidewall panel having a length. L:
said first edge of said base panel having a length ‘b’; and
said length L being at least as great as b+(a1+a2).
16. The foldable insulated bag of claim 15 wherein said first edge of said first sidewall panel is centered relative to said first edge of said base panel.
17. The foldable insulated bag of claim 10 wherein:
said sidewall structure includes first and second opposed sidewall panels, each said sidewall panel having a first edge adjoining said base panel and a second edge distant therefrom;
said base panel is rectangular, having two opposed sides of length ‘b’ and two opposed sides of length ‘a’:
said first edge of said first sidewall panel has a length, L; and
said length L being at least as great as b+2a.
18. The foldable insulated bag of claim 17 wherein said first edge of said first sidewall panel is centered relative to said first edge of said base panel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/071,585 US20060198562A1 (en) | 2005-03-04 | 2005-03-04 | Foldable insulated bag with trailing member |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/071,585 US20060198562A1 (en) | 2005-03-04 | 2005-03-04 | Foldable insulated bag with trailing member |
Publications (1)
Publication Number | Publication Date |
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US20060198562A1 true US20060198562A1 (en) | 2006-09-07 |
Family
ID=36944179
Family Applications (1)
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US11/071,585 Abandoned US20060198562A1 (en) | 2005-03-04 | 2005-03-04 | Foldable insulated bag with trailing member |
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US (1) | US20060198562A1 (en) |
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US20150272289A1 (en) * | 2012-11-05 | 2015-10-01 | Codefine S.A. | Method for preparing pieces of fabric; pieces and bag derived from application of the method |
US20160060017A1 (en) * | 2007-04-23 | 2016-03-03 | Coldkeepers, Llc | Insulated shipping bags |
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US10827808B2 (en) | 2017-02-24 | 2020-11-10 | Yeti Coolers, Llc | Tote bag |
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US11313605B2 (en) | 2018-10-04 | 2022-04-26 | Packit, Llc | Insulated carrier for temperature-controlled items |
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