US20120096754A1 - Breech plug cleaning tool - Google Patents
Breech plug cleaning tool Download PDFInfo
- Publication number
- US20120096754A1 US20120096754A1 US13/276,036 US201113276036A US2012096754A1 US 20120096754 A1 US20120096754 A1 US 20120096754A1 US 201113276036 A US201113276036 A US 201113276036A US 2012096754 A1 US2012096754 A1 US 2012096754A1
- Authority
- US
- United States
- Prior art keywords
- cleaning
- tool
- shaft
- breech plug
- handle
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A29/00—Cleaning or lubricating arrangements
- F41A29/02—Scrapers or cleaning rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41C—SMALLARMS, e.g. PISTOLS, RIFLES; ACCESSORIES THEREFOR
- F41C9/00—Other smallarms, e.g. hidden smallarms or smallarms specially adapted for underwater use
- F41C9/08—Muzzle-loading smallarms; Smallarms with flintlock mechanisms; Accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning In General (AREA)
Abstract
A cleaning tool set is used to clean carbon build-up from a breech plug. The cleaning tool set includes a first tool configured to remove the carbon buildup from the primer pocket and intermediate flash channel of the breech plug and a second tool configured to remove carbon buildup from the flash hole of the breech plug.
Description
- This application claims the priority benefit of U.S. Provisional Patent Application Ser. No. 61/405,311 filed Oct. 21, 2010.
- The invention relates to apparatus for cleaning a firearm, and more particularly to tools for cleaning carbon buildup inside the intermediate flash channel and flash hole in a breech plug.
- Modern muzzle-loading rifles and other muzzle-loading firearms are comprised of a barrel with an axial bore and a supporting stock. However, a muzzle-loading rifle is loaded by inserting a charge of loose or pelletized black powder or a black powder substitute and a patch or a sabot containing a projectile and tamping the charge securely into the breech end of the barrel. The powder is then ignited, e.g., by striking a percussion cap, or a primer, which sends a flame, normally through a small opening or flame bore, into the breech of the barrel through a breech plug which separates the primer from the powder charge. Upon ignition of the powder charge, the projectile is fired through the muzzle end of the barrel.
- Many modern muzzle-loading firearms employ shotgun shell primers to ensure adequate ignition. Shotgun shell primers contain a much larger charge of explosive material than do pistol or rifle primers and produce a hotter ignition flame. While a larger charge of explosive material helps ensure ignition of the propellant, it produces a great deal of carbon fouling within the channels of the breech plug in the process. Excessive firing will cause an unacceptable amount of carbon fouling to be deposited in the breech plug channels. Repetitive fouling results in the channels becoming smaller and smaller in diameter as carbon layer builds upon carbon layer. Depending on conditions, this can sometimes occur within as little as three shots. As carbon accumulates, ignition becomes erratic and unreliable which in turn degrades accuracy. Continued firing results in poorer and poorer ignition until eventually the small flash channel located near the front of the breech plug becomes completely plugged off. A bridged-off flash channel prevents the primer flash from making contact with the propellant. This results in a situation in which the shooter has a loaded firearm that will not fire at all. If the shooter or hunter is on the range or in the field, he or she will have to leave the area and remove the breech plug and immerse it in a solvent to clear the flash channel. Cleaning the breech plug with solvent is messy, time consuming and highly inconvenient.
- One of the main keys to the proper operation and the overall safety of firearms is keeping them clean. This is particularly true for muzzle-loading rifles, since they utilize black powder and not today's modern smokeless powder. One of the most frequently passed-over parts is the breech plug. Ignition-based residue from the primer coats the action and the inside of the breech plug. Failure to adequately and frequently clean the breech plug permits carbon buildup that degrades accuracy and eventually leads to blockage of the fire channel. Typically, this carbon residue has been removed using various solvents. The breech plug is removed from the firearm and a container is filled with enough carbon solvent to cover the breech plug and the breech plug is left to soak in the solvent for several hours. The breech plug is then dried and reinstalled in the receiver. However, this is time consuming and is inconvenient to do in the field.
- It is desired to have an improved cleaning tool set for use in cleaning carbon build-up from the breech plug.
- BRIEF SUMMARY OF THE INVENTION
- In one aspect, the invention is directed to a cleaning tool set used to clean carbon build-up from a breech plug. The cleaning tool set includes a first tool configured to remove the carbon buildup from the primer pocket and intermediate flash channel of the breech plug, and a second tool configured to remove carbon buildup from the flash hole of the breech plug.
- Advantages of the present invention will become more apparent to those skilled in the art from the following description of the embodiments of the invention which have been shown and described by way of illustration. As will be realized, the invention is capable of other and different embodiments, and its details are capable of modification in various respects.
- These and other features of the present invention, and their advantages, are illustrated specifically in embodiments of the invention now to be described, by way of example, with reference to the accompanying diagrammatic drawings, in which:
-
FIG. 1 illustrates a perspective view of a prior art breech plug used in a muzzle-loading firearm; -
FIG. 2 is a cross-sectional drawing of the breech plug ofFIG. 1 ; -
FIG. 3 illustrates a tool set used to clean the breech plug according to an embodiment of the invention; -
FIG. 4A is a cross-sectional drawing of a first tool of the tool set ofFIG. 3 ; -
FIG. 4B is a cross-sectional drawing of a second tool of the tool set ofFIG. 3 ; -
FIG. 5A is an end view of the first tool of the tool set ofFIG. 3 ; -
FIG. 5B is an end view of the second tool of the tool set ofFIG. 3 . -
FIG. 6A is a cross-sectional drawing of the breech plug ofFIG. 1 receiving the first tool of the tool set ofFIG. 3 ; and -
FIG. 6B is a cross-sectional drawing of the breech plug ofFIG. 1 receiving the second tool of the tool set ofFIG. 3 . - It should be noted that all the drawings are diagrammatic and not drawn to scale. Relative dimensions and proportions of parts of these figures have been shown exaggerated or reduced in size for the sake of clarity and convenience in the drawings. The same reference numbers are generally used to refer to corresponding or similar features in the different embodiments. Accordingly, the drawing(s) and description are to be regarded as illustrative in nature and not as restrictive.
- The invention will now be described in the following detailed description with reference to the drawings, wherein preferred embodiments are described in detail to enable practice of the invention. Although the invention is described with reference to these specific preferred embodiments, it will be understood that the invention is not limited to these preferred embodiments. But to the contrary, the invention includes numerous alternatives, modifications, and equivalents as will become apparent from consideration of the following detailed description.
- Muzzle-loading firearms have a barrel with a central axial bore that extends from the breech end of the barrel to the muzzle or discharge end of the firearm. It will be understood by those skilled in the art that these muzzle-loading firearms utilize a breech plug, illustrated in
FIG. 1 byreference number 10, which is configured to be removably located within the breech end of the barrel. Thebreech plug 10 is adapted to receive a firing cap or primer that is configured to ignite the combustive material within the barrel adjacent to thebreech plug 10. The breech end of the barrel is internally threaded with threads to receivebreech plug 10, which is externally threaded along a rear section with threads, which engage the threads in the barrel. - An exemplary embodiment of a
breech plug 10 is shown inFIG. 2 . Thebreech plug 10 includes afirst end 11 and an opposingsecond end 13. A central, axially aligned, firing primer pocket orchamber 12 is formed into thefirst end 11 of thebreech plug 10. A central, axially alignedintermediate flash channel 14 extends from theprimer chamber 12. A central, axially alignedflash hole 16 extends between theintermediate flash channel 14 and the barrel bore of the firearm to provide for the spark to travel from theprimer chamber 12 to the powder in the barrel bore adjacent to thesecond end 13 of thebreech plug 10. While the disclosure has been illustrated and described with respect to a typical embodiment of the breech plug, it is not intended to be limited to the details shown, since various modifications and substitutions can be made without departing in any way from the spirit of the present disclosure. - With respect to
FIGS. 3-5B , an exemplary embodiment of a cleaning tool set, indicated byreference 20, used to clean carbon build-up from thebreech plug 10 is shown. The tool set 20 is a 2-piece cleaning tool set which can be contained in a single package, wherein both tools are adapted to clean different portions of thebreech plug 10. It should be understood by one of ordinary skill in the art that the tool set may also be formed as a single-piece cleaning member to clean the entire pathway through the breech plug. The cleaning tool set 20 includes afirst tool 22 configured to remove the carbon buildup from theprimer pocket 12 andintermediate flash channel 14 and asecond tool 24 configured to remove carbon buildup from theflash hole 16. During manufacture of breech plugs 10, the longitudinal axis of theflash channel 14 is not necessarily coaxial with respect to the longitudinal axis of theflash hole 16. As such, the two-piece cleaning tool set 20 provides the user the ability to clean theflash channel 14 using one tool while cleaning theflash hole 16 with a separate tool. A single-piece cleaning tool may not allow for complete cleaning of the breech plug withmisaligned flash channel 14 andflash hole 16 as the cleaning shaft 46 (FIG. 3 ) may not be insertable into theflash hole 16 if it is not aligned with theflash channel 14. However, for those breech plugs 10 having substantially alignedflash channel 14 andflash hole 16, the single-piece cleaning tool set provides the efficiency of both tools in a single member. - In an embodiment, as shown in
FIGS. 3 , 4A, and 5A, thefirst tool 22 includes a cylindricalfirst cleaning shaft 26 with helicalfirst flutes 28 that spiral along the length of thefirst cleaning shaft 26 to lift carbon debris out of the intermediate flash chamber 14 (FIG. 2 ). Theflutes 28 can be sharp edges, similar to a drill bit, which allows the edges of theflutes 28 to dislodge or cut out the carbon build-up from the walls of theflash chamber 14. Theflutes 28 can also be blunted edges that extend from thefirst cleaning shaft 26 which are not sharpened but act in the same manner as the sharp edges such that the blunted edges remove the carbon build-up by grinding the build-up into the walls of theflash chamber 14 and then removing the build-up. In another embodiment, thefirst cleaning shaft 26 may include a wire brush (not shown) that extends radially outward from thefirst cleaning shaft 26. The cleaning means along the length of thefirst cleaning shaft 26 can be formed of any type or combination of types sufficient to remove carbon build-up from theflash chamber 14. - A
first handle 30 is positioned adjacent to one end of thefirst cleaning shaft 26. Thefirst handle 30 is operatively connected to thefirst cleaning shaft 26. Thefirst handle 30 has athumb knob 32 that is used to rotate thefirst tool 22 when thefirst cleaning shaft 26 is positioned within theintermediate flash channel 14. Thefirst handle 30 also includes a primerchamber cleaning shoulder 34 that extends from thethumb knob 32. A portion of thefirst cleaning shaft 26 is received within the cleaningshoulder 34, and the cleaningshoulder 34 is configured to be received within the primer chamber 12 (FIG. 2 ). The cleaningshoulder 34 includes at least oneslot 35 formed therein. In an embodiment, the cleaningshoulder 34 includes four (4)slots 35 spaced evenly about the circumference of the cleaningshoulder 34, but it should be understood by one of ordinary skill in the art that any number ofslots 35 can be formed about the circumference of the cleaningshoulder 34. Theslots 35 are formed through the thickness of the cleaningshoulder 34 and are configured to dislodge and remove any carbon build-up within theprimer chamber 12. - In one embodiment of the
first tool 22, as shown inFIGS. 4A and 5A , thethumb knob 32 has a length of about 0.460 inches and a diameter of 0.365 inches, the primerchamber cleaning shoulder 34 has a length of about 0.340 inches and a diameter of about 0.247 inches, and thefirst cleaning shaft 26 has a diameter of about 0.05 to 0.15 inches. The diameter of thefirst cleaning shaft 26 should be slightly smaller, i.e., about 0.002 to 0.010 inches smaller, than the inside diameter of theintermediate flash channel 14 so that thefirst flutes 28 on thefirst cleaning shaft 26 remove the carbon debris within theintermediate flash channel 14 without cutting into the walls of thebreech plug 10. Because thefirst tool 22 can be used on breech plugs that have different diameters and dimensions, it should be understood by one of ordinary skill in the art that the dimensions above are exemplary only and can be modified to correspond to similar dimensions of the different breech plugs. - In an embodiment, the
first handle 30 is movable along the length of thefirst cleaning shaft 26 so that the position of thefirst handle 30 with respect to thefirst cleaning shaft 26 is adjustable, such that thefirst tool 22 may be adjusted to fit different lengths ofintermediate flash channels 14 in various breech plugs 10. Thefirst handle 30 is selectively secureable to thefirst cleaning shaft 26, wherein thefirst handle 30 can be attached to thefirst cleaning shaft 26 at any location along the length thereof. In one embodiment, thefirst cleaning shaft 26 is secured in thefirst handle 30 with afirst set screw 40. However, other known means to secure thefirst cleaning shaft 26 in thefirst handle 30 may be used using sound engineering judgment without departing from the scope of the invention. - As shown in
FIGS. 3 , 4B, and 5B, an exemplary embodiment of thesecond tool 24 is provided. The illustrated embodiment of thesecond tool 24 includes asecond handle 42 positioned adjacent to one end of anextension shaft 44. Thesecond handle 42 is operatively connected to theextension shaft 44. A cylindricalsecond cleaning shaft 46 extends from the opposing end of theextension shaft 44. Thesecond cleaning shaft 46 has helicalsecond flutes 48 that spiral along the length of thesecond cleaning shaft 46 to lift carbon debris out of theflash hole 16. The second flutes 48 can be sharp edges, similar to a drill bit, which allows the edges of thesecond flutes 48 to dislodge or cut out the carbon build-up from the walls of theflash hole 16. The second flutes 48 can also be blunted edges that extend from thesecond cleaning shaft 46 which are not sharpened but act in the same manner as the sharp edges such that the blunted edges remove the carbon build-up by grinding the build-up into the walls of theflash hole 16 and then removing the build-up. In another embodiment, thesecond cleaning shaft 46 may include a wire brush (not shown) that extends radially outward from thesecond cleaning shaft 46. The cleaning means along the length of thesecond cleaning shaft 46 can be formed of any type or combination of types sufficient to remove carbon build-up from theflash hole 16. Thesecond handle 42 is used to rotate thesecond tool 24 when thesecond cleaning shaft 46 is positioned within theflash hole 16 of thebreech plug 10. - In one embodiment, as shown in
FIGS. 4B and 5B , thesecond handle 42 has a length of 0.550 inches and a diameter of 0.310 inches, theextension shaft 44 has a length of about 1.850 inches, and thesecond cleaning shaft 46 has a diameter of about 0.028 inches. The diameter of thesecond cleaning shaft 46 should be slightly smaller, i.e., about 0.002 to 0.004 inches smaller, than the inside diameter of theflash hole 16 so that thesecond flutes 48 on thesecond cleaning shaft 46 remove the carbon debris within theflash hole 16 without cutting into the walls of thebreech plug 10. Because thesecond tool 24 can be used on breech plugs that have different diameters and dimensions, it should be understood by one of ordinary skill in the art that the dimensions above are exemplary only and can be modified to correspond to similar dimensions of the different breech plugs. - In an embodiment, the
second handle 42 is selectively securable along the length of theextension shaft 44 so that the position of thesecond handle 42 with respect to theextension shaft 44 may be adjusted. The selective positioning of thesecond handle 42 along the length of theextension shaft 44 allows thesecond handle 42 to be positioned such that thesecond cleaning shaft 46 is retracted within, or surrounded by, thesecond handle 42 to protect thesecond cleaning shaft 46. In one embodiment, theextension shaft 44 is secured in the handle with asecond set screw 50. However, other known means to secure theextension shaft 44 in thesecond handle 42 may be used using sound engineering judgment without departing from the scope of the invention. -
FIGS. 6A-6B illustrate the tool set 20 in use with abreech plug 10. In operation, thefirst tool 22 is inserted into thebreech plug 10 through theprimer chamber 12 positioned at thefirst end 11 of thebreech plug 10. As thefirst cleaning shaft 26 of thefirst tool 22 is inserted into theflash channel 14 of thebreech plug 10, thefirst cleaning shaft 26 is rotated about the longitudinal axis thereof. Rotation of thefirst cleaning shaft 26 allows thefirst flutes 28 to remove any carbon build-up that may be present along the walls of theflash channel 14. Thefirst cleaning shaft 26 is continually inserted into theflash channel 14 until the cleaningshoulder 34 is seated within theprimer chamber 12. Continued rotation of thefirst tool 22 allows the cleaningshoulder 34 of thefirst tool 22 to remove any potential carbon build-up that may be present within theprimer chamber 12. Once thefirst tool 22 has been fully inserted and rotated within thebreech plug 10, thefirst tool 22 is then removed. While one insertion and removal of thefirst tool 22 into thebreech plug 10 may be sufficient to clean and completely remove all of the carbon build-up within theprimer chamber 12 andflash channel 14, additional insertions/removal of thefirst tool 22 can also be done to ensure a completely cleaning. - Once the
first tool 22 has been used to clean theprimer chamber 12 and theflash channel 14, thesecond tool 24 can be used to clean theflash hole 16 of thebreech plug 10, as shown inFIG. 6B . In operation, thesecond cleaning shaft 46 and theextension shaft 44 of thesecond tool 24 is inserted into thebreech plug 10 through theprimer chamber 12 and theflash channel 14 until thesecond cleaning shaft 46 begins to enter theflash hole 16. Thesecond tool 24 is then rotated by rotating thesecond handle 42, thereby resulting in the rotation of thesecond cleaning shaft 46. Thesecond tool 24 is then rotatably inserted further such that thesecond cleaning shaft 46 continues to rotate and move along the length of theflash hole 16. Continued rotation of thesecond cleaning shaft 46 removes the carbon build-up along the walls of theflash hole 16. Thesecond tool 24 is continually inserted into thebreech plug 10 until thesecond handle 42 contacts either thefirst end 11 of thebreech plug 10 or a shoulder within theprimer chamber 12. Once thesecond tool 24 has been fully inserted and rotated within thebreech plug 10, thesecond tool 24 is then removed. While one insertion and removal of thesecond tool 22 into thebreech plug 10 may be sufficient to clean and completely remove all of the carbon build-up within theflash hole 16, additional insertions/removal of thesecond tool 24 can also be done to ensure a completely cleaning. - While preferred embodiments of the present invention have been described, it should be understood that the present invention is not so limited and modifications may be made without departing from the present invention. The scope of the present invention is defined by the appended claims, and all devices, processes, and methods that come within the meaning of the claims, either literally or by equivalence, are intended to be embraced therein.
Claims (11)
1. A breech plug cleaning tool comprising:
a first tool having a first handle operatively connected to a first cleaning shaft, wherein said first cleaning shaft has first flutes; and
a second tool having a second handle operatively connected to an extension shaft, wherein a second cleaning shaft extends from a distal end of said extension shaft, and wherein said second cleaning shaft has second flutes.
2. The breech plug cleaning tool of claim 1 , wherein said first tool further includes a cleaning shoulder extending from said first handle, said cleaning shoulder positioned about at least a portion of said first cleaning shaft.
3. The breech plug cleaning tool of claim 2 , wherein said cleaning shoulder includes at least one slot formed through a thickness thereof.
4. The breech plug cleaning tool of claim 1 , wherein said first handle is selectively secureable to said first cleaning shaft such that said first handle is securingly positionable along a length of said first cleaning shaft.
5. The breech plug cleaning tool of claim 4 , wherein said first handle is selectively secureable to said first cleaning shaft by a set screw.
6. The breech plug cleaning tool of claim 1 , wherein said second handle is selectively secureable to said extension shaft such that said second handle is securingly positionable along a length of said extension shaft.
7. The breech plug cleaning tool of claim 6 , wherein said second handle is selectively secureable to said extension shaft by a set screw.
8. A breech plug cleaning kit comprising:
a first tool having a first handle operatively connected to a first cleaning shaft, wherein said first cleaning shaft has first flutes, and wherein said first handle includes a cleaning shoulder; and
a second tool having a second handle operatively connected to a second cleaning shaft, wherein said second cleaning shaft has second flutes.
9. The breech plug cleaning kit of claim 8 , wherein said second cleaning shaft extends from a distal end of an extension shaft, and said second handle being positionally adjustable along a length of said extension shaft relative to said second cleaning shaft.
10. The breech plug cleaning kit of claim 9 further comprising a set screw for selectively securing said second handle to said extension shaft.
11. The breech plug cleaning kit of claim 8 further comprising a set screw for selectively securing said first handle to said first cleaning shaft.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/276,036 US20120096754A1 (en) | 2010-10-21 | 2011-10-18 | Breech plug cleaning tool |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40531110P | 2010-10-21 | 2010-10-21 | |
US13/276,036 US20120096754A1 (en) | 2010-10-21 | 2011-10-18 | Breech plug cleaning tool |
Publications (1)
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US20120096754A1 true US20120096754A1 (en) | 2012-04-26 |
Family
ID=45971760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/276,036 Abandoned US20120096754A1 (en) | 2010-10-21 | 2011-10-18 | Breech plug cleaning tool |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD749183S1 (en) * | 2014-06-23 | 2016-02-09 | The United States Of America As Represented By The Secretary Of The Army | Breech plug for disrupter unit |
US9995555B2 (en) * | 2016-05-20 | 2018-06-12 | William Francis Rohlin | Firearm barrel cleaning jag and apparatus using same |
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US20050186043A1 (en) * | 2004-02-05 | 2005-08-25 | David Fuller | Method and assembly for mounting a drill bit into a shank |
US20060120814A1 (en) * | 2004-12-02 | 2006-06-08 | Lipohar Steve P | Combination tool |
US7147409B2 (en) * | 2004-03-17 | 2006-12-12 | Wienhold James L | Drill countersink assembly |
US20080286061A1 (en) * | 2007-05-18 | 2008-11-20 | Richard Lefebvre | Adaptor shank for SDS format pneumatic hammer/ drill gun |
US7686359B1 (en) * | 2006-04-03 | 2010-03-30 | Line Walker, LLC | Extraction tool |
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US8142115B2 (en) * | 2004-12-02 | 2012-03-27 | Kennametal Inc. | Twist drill for drilling with a countersink cutting arrangement, and a cutting tool with a countersink cutting arrangement, and a cutting-chamfering tool |
-
2011
- 2011-10-18 US US13/276,036 patent/US20120096754A1/en not_active Abandoned
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US4320544A (en) * | 1979-10-17 | 1982-03-23 | Bryant Floyd C | Combination drill and screwdriver |
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US4547924A (en) * | 1983-07-05 | 1985-10-22 | Brygider Sanford L | Gun cleaning implement |
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US5782031A (en) * | 1997-06-25 | 1998-07-21 | Bourgeois; Mario H. | Firearm piercing tool attachment device |
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US20060120814A1 (en) * | 2004-12-02 | 2006-06-08 | Lipohar Steve P | Combination tool |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD749183S1 (en) * | 2014-06-23 | 2016-02-09 | The United States Of America As Represented By The Secretary Of The Army | Breech plug for disrupter unit |
US9995555B2 (en) * | 2016-05-20 | 2018-06-12 | William Francis Rohlin | Firearm barrel cleaning jag and apparatus using same |
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Legal Events
Date | Code | Title | Description |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |