CA1168753A - Magnetic tape reel - Google Patents
Magnetic tape reelInfo
- Publication number
- CA1168753A CA1168753A CA000385977A CA385977A CA1168753A CA 1168753 A CA1168753 A CA 1168753A CA 000385977 A CA000385977 A CA 000385977A CA 385977 A CA385977 A CA 385977A CA 1168753 A CA1168753 A CA 1168753A
- Authority
- CA
- Canada
- Prior art keywords
- central part
- hub
- magnetic tape
- spokes
- side flanges
- 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.)
- Expired
Links
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
- G11B23/037—Single reels or spools
Abstract
Abstract of the Disclosure An improved magnetic tape reel for computers is taught which comprises a central part carrying a driving hub having a first set of spokes extending radially outward from the outer surface of the hub and a support ring concentric with the hub and having a second set of spokes extending radially inwardly from the inner surface of the ring. Two side flanges are ultrasonically welded to the central part along the spokes forming a box-like structure having a high resistance to compression produced by tape being wound thereon.
Description
1 ¦IN THE ~NITED STATES PATENT AND TRADEMARK OFFICE
21APPLICATION FOR ~NITED STATES PATENT
41 TITLE: IMPROVED MAGNETIC TAPE REEL
sl INVENTOR: Mi chael W Tanny 71 ~ of the Invent1on 81 The basic concept of a magnetic tape reel comprised of 91 two flanges connected to a central hub has been known for some time. For example, in U.S. Patent No. 3/6321053 such 11¦ a structure is shown.
12¦ An improvement to this basic structure was taught in 13¦ U.S. Patent No. 4~044r965 in which a box-like or caisson 14¦ configuration was taught comprising a hub, ring for supporting 15¦ the magnetic tape and flanges. The box-like structure was 16¦ taught to have sufficient rigidity to avoid hub deformation 17¦ and flange buckling, while the tape was being wound on the 18¦ ring.
19¦ According to UOS. Patent No. 41044r965~ it was taught that 201 the flanges were to be welded to the central part o~ the reel 21¦ on each side thereof proximate the ring and hub sections~ The 22 I polystyrene, for example, parts would be ultrasonically welded 23 ¦ to form a box-like structure which exhibited better resistance 24 to compression produced by tape being wound on the support ring.
25 ¦ The flanges presented rather small-dimensioned projections on 26 ¦ the internal faces of the central part defining a substantially ~7 ¦ cylindrical welding surface to the side flanges.
28 Although the magnetic tape reel as disclosed in U.S. Patent 29 1 No. 4,044,965 represented an advance in the art, the design also 30 ¦ posed certain problems and it is an object of the present .
-~ ~ ~
~ '7~
1 ¦ invention to teach a novel magnetic tape reel which possesses
21APPLICATION FOR ~NITED STATES PATENT
41 TITLE: IMPROVED MAGNETIC TAPE REEL
sl INVENTOR: Mi chael W Tanny 71 ~ of the Invent1on 81 The basic concept of a magnetic tape reel comprised of 91 two flanges connected to a central hub has been known for some time. For example, in U.S. Patent No. 3/6321053 such 11¦ a structure is shown.
12¦ An improvement to this basic structure was taught in 13¦ U.S. Patent No. 4~044r965 in which a box-like or caisson 14¦ configuration was taught comprising a hub, ring for supporting 15¦ the magnetic tape and flanges. The box-like structure was 16¦ taught to have sufficient rigidity to avoid hub deformation 17¦ and flange buckling, while the tape was being wound on the 18¦ ring.
19¦ According to UOS. Patent No. 41044r965~ it was taught that 201 the flanges were to be welded to the central part o~ the reel 21¦ on each side thereof proximate the ring and hub sections~ The 22 I polystyrene, for example, parts would be ultrasonically welded 23 ¦ to form a box-like structure which exhibited better resistance 24 to compression produced by tape being wound on the support ring.
25 ¦ The flanges presented rather small-dimensioned projections on 26 ¦ the internal faces of the central part defining a substantially ~7 ¦ cylindrical welding surface to the side flanges.
28 Although the magnetic tape reel as disclosed in U.S. Patent 29 1 No. 4,044,965 represented an advance in the art, the design also 30 ¦ posed certain problems and it is an object of the present .
-~ ~ ~
~ '7~
1 ¦ invention to teach a novel magnetic tape reel which possesses
2 ¦ the box-like structure and rigidity of the prior art without the 31 drawbacks as explained below.
41 The primary disadvantage inherent in the structure taught S in U.S. Patent No. 4,04~,965 is the substantial difficulty 61 encountered by manufacturers of such a device in maintaining 71 constancy throughout the circumference of the reel in achieving 81 an acceptable weld. It is qu:ite common to experience some 91 part-to-part irregularities and Elange-to-hub misalignments 10¦ which would prevent full circumferential contact between the 11¦ annular collars of the central part and the welding surfaces of 12 ¦ the side flanges. The areas of weld contact between the central 13¦ part and the flanges along their entire circumferential lengths 14¦ are of a relatively small dimension and any part inconsistencies lS¦ or processing misalignments many times result in inconsistent 16¦ weld areas and resulting part rejection.
17¦ The present invention can be more readily appreciated i8 ¦ by viewing the appended drawings in which:
19¦ FIG. l is a side elevation illustrating a section of the 20 ¦ reel of the present invention.
21 ¦ FIG. ~ is a cross-sectional view along the line 2-2 of 22 ¦ FIG. 1.
23 ¦ FIG. 3 is a cross-sectional view along the line 3-3 of 241 Fig. 1.
251 FIG. 4 is a cross-sectional view along the line 4-4 of 26 ¦ Fig. 1.
271 /i/
32 1 /// _ ~ s~
1 Brief Descr~ption of the Invention 2 The present invention co~prises a magnetic tape reel
41 The primary disadvantage inherent in the structure taught S in U.S. Patent No. 4,04~,965 is the substantial difficulty 61 encountered by manufacturers of such a device in maintaining 71 constancy throughout the circumference of the reel in achieving 81 an acceptable weld. It is qu:ite common to experience some 91 part-to-part irregularities and Elange-to-hub misalignments 10¦ which would prevent full circumferential contact between the 11¦ annular collars of the central part and the welding surfaces of 12 ¦ the side flanges. The areas of weld contact between the central 13¦ part and the flanges along their entire circumferential lengths 14¦ are of a relatively small dimension and any part inconsistencies lS¦ or processing misalignments many times result in inconsistent 16¦ weld areas and resulting part rejection.
17¦ The present invention can be more readily appreciated i8 ¦ by viewing the appended drawings in which:
19¦ FIG. l is a side elevation illustrating a section of the 20 ¦ reel of the present invention.
21 ¦ FIG. ~ is a cross-sectional view along the line 2-2 of 22 ¦ FIG. 1.
23 ¦ FIG. 3 is a cross-sectional view along the line 3-3 of 241 Fig. 1.
251 FIG. 4 is a cross-sectional view along the line 4-4 of 26 ¦ Fig. 1.
271 /i/
32 1 /// _ ~ s~
1 Brief Descr~ption of the Invention 2 The present invention co~prises a magnetic tape reel
3 preferably used in cornputer operations where a high degree of
- 4 accuracy is mandatory. The reel possesses those advantages shown in U.S. Patent No. 4,0~4,965, but is improved thereover in 6 the elimination of welding surfaces in the form of annular 7 collars and, as a substitute therefor, spokes are provided 8 extending radially outward from the outer surface of the hub and 9 further spokes extending radially inward from the inner surface of the tape support ring. The side flanges are ultrasonically 11 welded only on the spokes forming a box-like structure having a 12 high resistance to compression.
14 Detailed Description of the Invention Referring now to the drawings, FIG. 1 shows a central part 16 1 which is monolithic having driving ring 13 and hub 14 connected 17 by central part 35. Side flanges 2 and 3 delimit opposite free 18 ends of ring 13 at joggles 40, 41. In this way, the connection 19 of the flanges with the ring is made with a sharp edge as a support structure in contact with the magnetic tape to be wound 21 thereon. Spokes 15 and 16 extend radially between ring 13 and 22 hub 14 on opposite sides of central part 35. The profile of the 23 spokes are shown in FIG. 3. Yet another set of spokes 17 and 18 24 are employed extendinq radially from the inner surface of driving ring 13 toward the driving hub with spokes 17 and 18 terminating 26 at points 70 and 71 before radially reaching said hub. Prefer-27 ably, spokes 17 and 18 terminate approximately half way down 28 central part 35. The purpose of this is to aid in aligning 29 projections 80 extendinq from the sides flanges 2 and 3 through repeating orifices 50, which in turn are provided for instant 31 alignment of the side flanges 2 and 3 with the central part 35.
1, ~ ~
~ 3 I
1 ¦ S.lde f].an~es 2, 3 possess extended surfaces 4, 5, 6, and 2 7 which, when placed proximate central part 35, abut the radially 3 ¦ extending spokes at 60, 61, 62, 63 ancl 64 (Figs. 3 and 4).
41 Ultrasounds are emitted at the time when the side flanges are 51 pressed against the radially extending spokes so that, at 61 surface contact areas 60, 61, 62, 63, 64 and 65 the side flan~es 71 press into the spokes and penetrate into one another to produce, 81 by shearing and softening, the weld areas 60, 61, 62, 63, 64 and 91 65. It is important to note that even rather gross misalignment 10¦ caused by dimensional variance in part manufacture or in reel 11¦ fabrication will not signiEicantly affect the integrity of the 12 ¦ welds.
13¦ Although the actual number of spokes and the composition 14¦ of materials used herein are considered design variables, the 15¦ selection of which would be obvious to one of ordinary skill 16¦ in the art, it has been found that a central part 35 made of 17¦ glass fiber fiiled with polystyrene with side flallges madt of 18¦ polystyrene has proven to be acceptable due to their ability 19 ¦ to be ultrasonically weldable. In the past, applicant has 20¦ employed twenty-four radially extending spokes 15, 16 on either 21 ¦ side of central part 35 with an equal number of radiating spokes 22 ¦ 17 and 18. Thus, each flange is welded to central part 35 at 72 ~31 radial points, 48 at the periphery of central part 35 proximate 24 ¦ ring 1 and 24 points proximate central driving ring 2.
29 1 //~
30 1 //i 32 /// _ . . .
14 Detailed Description of the Invention Referring now to the drawings, FIG. 1 shows a central part 16 1 which is monolithic having driving ring 13 and hub 14 connected 17 by central part 35. Side flanges 2 and 3 delimit opposite free 18 ends of ring 13 at joggles 40, 41. In this way, the connection 19 of the flanges with the ring is made with a sharp edge as a support structure in contact with the magnetic tape to be wound 21 thereon. Spokes 15 and 16 extend radially between ring 13 and 22 hub 14 on opposite sides of central part 35. The profile of the 23 spokes are shown in FIG. 3. Yet another set of spokes 17 and 18 24 are employed extendinq radially from the inner surface of driving ring 13 toward the driving hub with spokes 17 and 18 terminating 26 at points 70 and 71 before radially reaching said hub. Prefer-27 ably, spokes 17 and 18 terminate approximately half way down 28 central part 35. The purpose of this is to aid in aligning 29 projections 80 extendinq from the sides flanges 2 and 3 through repeating orifices 50, which in turn are provided for instant 31 alignment of the side flanges 2 and 3 with the central part 35.
1, ~ ~
~ 3 I
1 ¦ S.lde f].an~es 2, 3 possess extended surfaces 4, 5, 6, and 2 7 which, when placed proximate central part 35, abut the radially 3 ¦ extending spokes at 60, 61, 62, 63 ancl 64 (Figs. 3 and 4).
41 Ultrasounds are emitted at the time when the side flanges are 51 pressed against the radially extending spokes so that, at 61 surface contact areas 60, 61, 62, 63, 64 and 65 the side flan~es 71 press into the spokes and penetrate into one another to produce, 81 by shearing and softening, the weld areas 60, 61, 62, 63, 64 and 91 65. It is important to note that even rather gross misalignment 10¦ caused by dimensional variance in part manufacture or in reel 11¦ fabrication will not signiEicantly affect the integrity of the 12 ¦ welds.
13¦ Although the actual number of spokes and the composition 14¦ of materials used herein are considered design variables, the 15¦ selection of which would be obvious to one of ordinary skill 16¦ in the art, it has been found that a central part 35 made of 17¦ glass fiber fiiled with polystyrene with side flallges madt of 18¦ polystyrene has proven to be acceptable due to their ability 19 ¦ to be ultrasonically weldable. In the past, applicant has 20¦ employed twenty-four radially extending spokes 15, 16 on either 21 ¦ side of central part 35 with an equal number of radiating spokes 22 ¦ 17 and 18. Thus, each flange is welded to central part 35 at 72 ~31 radial points, 48 at the periphery of central part 35 proximate 24 ¦ ring 1 and 24 points proximate central driving ring 2.
29 1 //~
30 1 //i 32 /// _ . . .
Claims (4)
1. A magnetic tape reel for computers, said reel comprising:
a central part comprising a driving hub having a first set of spokes extending radially outwardly from the outer surface of said hub on opposite sides of said central part;
a support ring concentric with said hub and having a second set of spokes extending radially inwardly from said inner surface of said ring on opposite sides of said central part; and two side flanges formed with inner and outer welding surfaces projecting so as to contact said central part at said first and second sets of spokes, said side flanges being connected to said central part by means of ultrasonic welds along those surfaces where the side flanges contact said first and second sets of spokes forming a box-like structure having a high resistance to compression produced by tape being wound thereon.
a central part comprising a driving hub having a first set of spokes extending radially outwardly from the outer surface of said hub on opposite sides of said central part;
a support ring concentric with said hub and having a second set of spokes extending radially inwardly from said inner surface of said ring on opposite sides of said central part; and two side flanges formed with inner and outer welding surfaces projecting so as to contact said central part at said first and second sets of spokes, said side flanges being connected to said central part by means of ultrasonic welds along those surfaces where the side flanges contact said first and second sets of spokes forming a box-like structure having a high resistance to compression produced by tape being wound thereon.
2. The magnetic tape reel of claim 1 wherein each said flange is provided with a joggle for housing the corresponding annular edges of the support ring, so that a sharp edge appears between each said flange and said ring.
3. The magnetic tape reel of claim 1 wherein said central part further possesses repeating orifices proximate the driving hub which are intended to receive protrusions fixed on one of the side flanges.
4. The magnetic tape reel of claim 3 wherein one set of spokes extending from the inner surface of the driving ring terminate at a point before reaching said repeating orifices on the side of the central part intended to receive said protrusions fixed on one of the side flanges.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/195,677 US4327879A (en) | 1980-10-09 | 1980-10-09 | Magnetic tape reel |
| US195,677 | 1980-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1168753A true CA1168753A (en) | 1984-06-05 |
Family
ID=22722319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000385977A Expired CA1168753A (en) | 1980-10-09 | 1981-09-15 | Magnetic tape reel |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US4327879A (en) |
| JP (1) | JPS57127952A (en) |
| AU (1) | AU543566B2 (en) |
| BE (1) | BE890691A (en) |
| BR (1) | BR8106249A (en) |
| CA (1) | CA1168753A (en) |
| CH (1) | CH653794A5 (en) |
| DE (1) | DE3139698A1 (en) |
| FR (1) | FR2491900B1 (en) |
| GB (1) | GB2084959B (en) |
| IE (1) | IE51870B1 (en) |
| IT (1) | IT1139640B (en) |
| MX (1) | MX150484A (en) |
| NL (1) | NL8104328A (en) |
| SE (1) | SE452075B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2135653A (en) * | 1983-03-03 | 1984-09-05 | Data Packaging Corp | Computer tape reel |
| FR2542906A1 (en) * | 1983-03-16 | 1984-09-21 | Data Packaging Corp | Reel hub for computer magnetic tape |
| DE8309239U1 (en) * | 1983-03-29 | 1983-09-29 | Basf Ag, 6700 Ludwigshafen | TAPE REEL, IN PARTICULAR FOR MAGNETIC TAPES |
| US4664328A (en) * | 1984-08-03 | 1987-05-12 | Fuji Photo Film Co., Ltd. | Magnetic tape reel |
| US4540133A (en) * | 1984-10-24 | 1985-09-10 | Data Technology Corporation | Tape reel and method |
| DE3524353A1 (en) * | 1985-07-08 | 1987-01-15 | Schneider Carl Gmbh & Co Kg | REEL FOR BAND-SHAPED RECORDING CARRIER, IN PARTICULAR COMPUTER REEL |
| US6568618B1 (en) * | 2000-05-23 | 2003-05-27 | Quantum Corporation | Half-inch tape drive in half high form factor |
| US7493430B2 (en) * | 2005-07-14 | 2009-02-17 | Quantum Corporation | Data flow control and bridging architecture enhancing performance of removable data storage systems |
| US20070155201A1 (en) * | 2006-01-05 | 2007-07-05 | Quantum Corporation, A Delaware Corporation | PCB edge connector |
| JP4837450B2 (en) * | 2006-06-16 | 2011-12-14 | 富士フイルム株式会社 | Recording tape cartridge |
| DE102007010994B4 (en) * | 2007-03-05 | 2009-04-02 | Julius Dr.-Ing. Schröder-Frerkes | Method and device for applying sections of strip material to moving blanks |
| JP2012069184A (en) * | 2010-09-22 | 2012-04-05 | Tdk Corp | Tape reel and information recording medium |
| JP5127958B2 (en) * | 2011-05-30 | 2013-01-23 | 富士フイルム株式会社 | reel |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3410500A (en) * | 1967-01-30 | 1968-11-12 | Perfection Plastics Inc | Tape reel |
| US3632053A (en) * | 1969-07-03 | 1972-01-04 | Minnesota Mining & Mfg | Tape reel |
| CH598121A5 (en) * | 1975-09-19 | 1978-04-28 | Gefitec Sa | |
| US4052020A (en) * | 1975-10-01 | 1977-10-04 | Knox Jon A | Computer tape reel |
| US4083509A (en) * | 1976-10-01 | 1978-04-11 | Memorex Corporation | Reel for magnetic recording tape |
| US4088278A (en) * | 1977-05-16 | 1978-05-09 | Memorex Corporation | Reel for magnetic recording tape |
| US4184650A (en) * | 1978-05-08 | 1980-01-22 | Minnesota Mining And Manufacturing Company | Plastic tape reel |
| FR2456989A1 (en) * | 1979-05-14 | 1980-12-12 | Posso Patrick | PROCESS FOR THE SIMPLIFIED PACKAGING OF A MAGNETIC COMPUTER TAPE AND WINDING CORE FOR CARRYING OUT SAID METHOD |
-
1980
- 1980-10-09 US US06/195,677 patent/US4327879A/en not_active Expired - Lifetime
-
1981
- 1981-09-15 CA CA000385977A patent/CA1168753A/en not_active Expired
- 1981-09-21 NL NL8104328A patent/NL8104328A/en not_active Application Discontinuation
- 1981-09-29 BR BR8106249A patent/BR8106249A/en unknown
- 1981-09-29 GB GB8129353A patent/GB2084959B/en not_active Expired
- 1981-10-06 DE DE19813139698 patent/DE3139698A1/en not_active Ceased
- 1981-10-07 MX MX189546A patent/MX150484A/en unknown
- 1981-10-08 IT IT24392/81A patent/IT1139640B/en active
- 1981-10-08 JP JP56160859A patent/JPS57127952A/en active Granted
- 1981-10-08 IE IE2357/81A patent/IE51870B1/en unknown
- 1981-10-08 FR FR8118945A patent/FR2491900B1/en not_active Expired
- 1981-10-08 AU AU76139/81A patent/AU543566B2/en not_active Ceased
- 1981-10-09 SE SE8105990A patent/SE452075B/en not_active IP Right Cessation
- 1981-10-09 BE BE0/206212A patent/BE890691A/en not_active IP Right Cessation
- 1981-10-09 CH CH6487/81A patent/CH653794A5/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57127952A (en) | 1982-08-09 |
| IT1139640B (en) | 1986-09-24 |
| CH653794A5 (en) | 1986-01-15 |
| FR2491900B1 (en) | 1985-11-08 |
| AU543566B2 (en) | 1985-04-26 |
| MX150484A (en) | 1984-05-14 |
| IE812357L (en) | 1982-04-09 |
| BR8106249A (en) | 1982-06-15 |
| NL8104328A (en) | 1982-05-03 |
| DE3139698A1 (en) | 1982-05-27 |
| AU7613981A (en) | 1982-04-22 |
| GB2084959A (en) | 1982-04-21 |
| SE8105990L (en) | 1982-04-10 |
| IT8124392A0 (en) | 1981-10-08 |
| IE51870B1 (en) | 1987-04-15 |
| US4327879A (en) | 1982-05-04 |
| JPS6141819B2 (en) | 1986-09-17 |
| BE890691A (en) | 1982-02-01 |
| SE452075B (en) | 1987-11-09 |
| GB2084959B (en) | 1984-10-03 |
| FR2491900A1 (en) | 1982-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |