Abstract
A firearm maintenance system may be utilized to clean, lubricate and protect a firearm. Embodiments of the invention provide for creating a sealed environment between the breech end and muzzle end of the barrel of the firearm and introducing a maintenance fluid into the sealed environment. The maintenance fluid may be circulated within the barrel in a closed circulation configuration by a pump. The maintenance fluid may be heated. An ultrasonic generator may be utilized to induce cavitation in the maintenance fluid to improve cleaning efficiency. Fluid flow sighting devices may be utilized to visibly monitor operation. Electronic means to monitor and safeguard the firearm maintenance system may also be employed.
Claims
1. A system for maintaining a firearm, the firearm comprising a barrel having a breech end and a muzzle end, the system comprising: a breech plug configured to fit within and form a liquid tight seal with the breech end of the barrel; a muzzle seal configured to fit and form a liquid tight seal with the muzzle end of the barrel; a pump comprising a housing having a suction side and a pressure side, the suction side comprising an inlet conduit and the pressure side comprising an outlet conduit configured to provide a flow of a maintenance fluid into the barrel; and a barrel tube having a first end adjacent to the pump inlet and a second end configured to be inserted into the barrel and placed adjacent to the breech plug.
2. The system of claim 1 wherein the muzzle seal clamps around an exterior end of the barrel.
3. The system of claim 2 wherein the muzzle seal comprises a housing having a barrel attachment end, a pump housing attachment end, and an intermediate section, the housing comprising an internal profile which has a decreasing diameter between the intermediate section and the barrel attachment end.
4. The system of claim 3 wherein the muzzle seal further comprises a grommet disposed within the housing, where the grommet is configured to squeeze around the barrel as the grommet is urged toward the barrel attachment end.
5. The system of claim 4 wherein the pump housing attachment end of the muzzle seal is configured to engage a pump housing containing the pump wherein the engagement of the pump housing to the pump housing attachment end of the muzzle seal urges the grommet toward the barrel attachment end causing the grommet to seal tighter around the barrel.
6. The system of claim 1 comprising a barrel plug disposed within the muzzle seal, the barrel plug comprising a forward end which is configured to be inserted in the muzzle end of the barrel.
7. The system of claim 1 wherein the flow of a maintenance fluid is directed through a fluid heater before flowing into the barrel.
8. The system of claim 1 further comprising an ultrasonic generator configured to induce cavitation in the maintenance fluid in the barrel.
9. A system for maintaining a firearm, the firearm comprising a barrel having a breech end and a muzzle end, the system comprising: a breech plug configured to fit within and form a liquid tight seal with the breech end of the barrel; a muzzle seal configured to fit and form a liquid tight seal with the muzzle end of the barrel; a pump housing comprising a first end configured to sealingly attach to the muzzle seal and a second end configured to attach to a motor housing; an impeller disposed within the pump housing, the pump housing comprising a suction side and a pressure side, the suction side comprising an inlet conduit and the pressure side comprising an outlet conduit; a motor disposed within the motor housing, the motor having a shaft attached to the impeller; and a tube having a first end and a second end, the first end configured to be received within the pump housing and disposed adjacent to the inlet conduit and the second end configured to be inserted within the barrel of the firearm and disposed adjacent to the breech plug, wherein the outlet conduit is hydraulically connected to an annulus defined between an exterior of the tube and an interior of the barrel.
10. The system of claim 9 comprising a fluid heater.
11. The system of claim 9 wherein a first valve is attached to the inlet conduit.
12. The system of claim 9 wherein a second valve is attached to the outlet conduit.
13. A method of maintaining a firearm, the firearm comprising a barrel having a breech end and a muzzle end, the method comprising: inserting a breech plug within the breech end of the barrel resulting in a liquid tight seal between the plug and the breech end of the barrel; attaching a muzzle seal to the muzzle end of the barrel resulting in a liquid tight seal with the muzzle seal and the muzzle end of the barrel; heating a maintenance fluid; pumping the maintenance fluid through a conduit seal into the barrel resulting in a flow of maintenance fluid in the barrel; and receiving a return flow of maintenance fluid from the barrel.
14. The method of claim 13 wherein the muzzle seal clamps around an exterior end of the barrel.
15. The method of claim 13 wherein the muzzle seal is inserted into an end of the barrel.
16. The method of claim 13 including the step of inducing cavitation in the maintenance fluid in the barrel.
17. A system for maintaining a firearm, the firearm comprising a barrel having a breech end and a muzzle end, the system comprising: a breech plug configured to fit within and form a liquid tight seal with the breech end of the barrel; a muzzle seal configured to fit and form a liquid tight seal with the muzzle end of the barrel; and a pump comprising a housing having a suction side and a pressure side, the suction side comprising an inlet conduit and the pressure side comprising an outlet conduit configured to provide a flow of a maintenance fluid into the barrel; and a fluid heater through which the maintenance fluid flows before flowing into the barrel.
18. A system for maintaining a firearm, the firearm comprising a barrel having a breech end and a muzzle end, the system comprising: a breech plug configured to fit within and form a liquid tight seal with the breech end of the barrel; a muzzle seal configured to fit and form a liquid tight seal with the muzzle end of the barrel, wherein the muzzle seal clamps around an exterior end of the barrel, wherein the muzzle seal comprises a housing having a barrel attachment end, a pump housing attachment end, and an intermediate section, the housing comprising an internal profile which has a decreasing diameter between the intermediate section and the barrel attachment end; and a pump comprising a housing having a suction side and a pressure side, the suction side comprising an inlet conduit and the pressure side comprising an outlet conduit configured to provide a flow of a maintenance fluid into the barrel.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) FIG. 1 depicts a perspective view of an embodiment of the firearm maintenance system comprising a pump, muzzle seal, and barrel tube, but not showing the breech plug.
(2) FIG. 2 depicts a top view of the system depicted in FIG. 1.
(3) FIG. 3 depicts a rear view of the system depicted in FIG. 1.
(4) FIG. 4 depicts an exploded view of the system depicted in FIG. 1, also including a breech plug which is utilized with embodiments of the invention.
(5) FIG. 4A depicts a detailed view of the structure encircled in FIG. 4.
(6) FIG. 5 depicts a perspective view of an alternative embodiment of the firearm maintenance system comprising a pump, muzzle seal, and barrel tube utilized in embodiments of the invention but not showing the breech plug.
(7) FIG. 6 depicts a top view of the system depicted in FIG. 5.
(8) FIG. 7 depicts a rear view of the system depicted in FIG. 5.
(9) FIG. 8 depicts an exploded view of the system depicted in FIG. 5, also including a breech plug which is utilized in embodiments of the invention.
(10) FIG. 8A depicts a detailed view of the structure encircled in FIG. 8.
(11) FIG. 9 depicts the embodiment of FIG. 1 but without showing the muzzle seal to better show the relationship of the barrel plug, pump, and barrel tube.
(12) FIG. 10 depicts an exploded view of the assembly depicted in FIG. 9.
(13) FIG. 11 depicts an embodiment of the invention in preparation for attachment to the barrel of a pump action shotgun, showing the relative placement of the different components of the system.
(14) FIG. 12 schematically depicts the attachment of an embodiment of the firearm maintenance system to the barrel of a shotgun.
(15) FIG. 13 depicts an embodiment of the invention which may be installed on a handgun, showing the relative placement of the different components of the system.
(16) FIG. 14 schematically depicts the attachment of an embodiment of the firearm maintenance system to a firearm having a muzzle device, such as a flash hider or muzzle brake.
(17) FIG. 15 schematically depicts the attachment of an embodiment of the firearm maintenance system to a firearm having a muzzle device, such as a flash hider or muzzle brake.
(18) FIG. 15A depicts a detailed view of structure encircled in circle A of FIG. 15.
(19) FIG. 15B depicts a detailed view of structure encircled in circle B of FIG. 15.
(20) FIG. 15A shows a close-up view from FIG. 15 of the attachment of the muzzle seal and pump to the barrel of a firearm having a muzzle device.
(21) FIG. 16 shows a perspective view of an embodiment of a pump utilized in the present invention.
(22) FIG. 17 shows a bottom view of the embodiment of the pump depicted in FIG. 16.
(23) FIG. 18 depicts a first side view of the embodiment of the pump depicted in FIG. 16.
(24) FIG. 19 shows a sectional view taken along line 19-19 of FIG. 18.
(25) FIG. 20 depicts a second side view of the embodiment of the pump depicted in FIG. 16.
(26) FIG. 21 shows a sectional view taken along line 21-21 of FIG. 20.
(27) FIG. 22 shows a side view of an embodiment of a muzzle seal for use on a firearm with a “bare” barrel configuration (i.e., a barrel without muzzle device or exterior protuberances).
(28) FIG. 23 shows a sectional view taken along line 23-23 of FIG. 22.
(29) FIG. 24 shows a side view of an embodiment of a muzzle seal for use on a pump shotgun.
(30) FIG. 25 shows a sectional view taken along line 25-25 of FIG. 24.
(31) FIG. 26 shows a side view of an embodiment of a muzzle seal for use on a pistol.
(32) FIG. 27 shows a sectional view along line 27-27 of FIG. 26.
(33) FIG. 28 shows a side view of an embodiment of a muzzle seal for use on a firearm having a muzzle device.
(34) FIG. 29 shows a sectional view taken along line 29-29 of FIG. 28.
(35) FIG. 30 shows a perspective view of an embodiment of a barrel plug utilized in embodiments of the invention for use on large caliber firearms.
(36) FIG. 31 shows a bottom end view of the barrel plug of FIG. 30.
(37) FIG. 32 shows a side view of the barrel plug of FIG. 30.
(38) FIG. 33 is a sectional view along line 33-33 of FIG. 32.
(39) FIG. 34 shows a perspective view of an embodiment of a barrel plug utilized in embodiments of the invention for use on small caliber firearms.
(40) FIG. 35 shows a bottom end view of the barrel plug of FIG. 34.
(41) FIG. 36 shows a side view of the barrel plug of FIG. 34.
(42) FIG. 37 is a sectional view along line 37-37 of FIG. 36.
(43) FIG. 38 shows a perspective view of an embodiment of a barrel plug utilized in embodiments of the invention for use on firearms with muzzle devices, such as flash hiders or muzzle brakes.
(44) FIG. 39 shows a bottom end view of the barrel plug of FIG. 38.
(45) FIG. 40 shows a side view of the barrel plug of FIG. 38.
(46) FIG. 41 is a sectional view along line 41-41 of FIG. 40.
DETAILED DESCRIPTION OF THE INVENTION
(47) Referring now to the Figures, FIGS. 1-3 show an embodiment of a first embodiment of a firearm maintenance system 100, which system further comprises a breech plug 108 (not shown in FIGS. 1-3 but shown in FIG. 4). The first embodiment of the firearm cleaning system 100 comprises a pump 102, a muzzle seal 104 and may comprise an optional barrel tube 106.
(48) FIGS. 4 and 4A show an exploded view of the firearm maintenance system 100 including breech plug 108 in relative position with a barrel 10 of a firearm, the barrel having a breech end 12 and a muzzle end 14. As further shown in FIG. 4 and FIG. 4A, pump 102 may comprise a housing 110 having a suction side 112 and a discharge side 114. Pump 102 may further comprise an impeller 116. A motor 124 may be attached to the rear of pump 102 with a motor shaft (not shown) configured to rotate impeller 116.
(49) Flow from discharge side 114 may be routed through sight tube 134 before flowing into outlet conduit 120. A squeeze bottle, syringe, or other maintenance fluid reservoir may be connected to a port at swivel tube fitting 136 to provide an initial flow of maintenance fluid into the outlet conduit 120. Alternatively, fluid may be placed inside the barrel prior to installation of the firearm maintenance system 100. A check valve 138 may be utilized to prevent backflow of the maintenance fluid. Once a charge of maintenance fluid has been placed into the firearm maintenance system, the swivel tube fitting may be closed thereby forming a closed system. Fluid flow may be visually confirmed by flow through sight tube 134.
(50) Outlet conduit 120 provides flow to barrel plug 122 which has flow channels (or conduits) 132. Barrel plug 122 extends into muzzle seal 104. A forward end 142 of barrel plug extends into the muzzle of barrel 10, where flow channels 132 extend through to the forward end 142. Barrel plug 122 has a rearward end having a flange 144 which may, but not necessarily, abut against the muzzle. Flange 144 may have an O-ring groove 146 to provide for sealing within pump housing 110. Barrel plug 122 provides a flow of maintenance fluid into barrel 10. The maintenance fluid flows to breech plug 108 which prevents flow of the maintenance fluid past the breech end 12 of the barrel 10.
(51) As depicted in some figures including FIGS. 4 and 4A, a barrel tube 106 may be utilized with some embodiments of the system. If used, an end of barrel tube extends through an opening 140 of barrel plug 122, with the end disposed adjacent suction side 112. Flow channels 132 of barrel plug 122 are disposed around the exterior of barrel tube 106. When installed to a firearm, barrel tube 122 extends through barrel plug 122 into the barrel 10 of the firearm. Maintenance fluid flows through flow channels 132 and enters the annular space defined by the exterior of barrel tube 106 and the interior of barrel 10. The flow of maintenance fluid, blocked by breech plug 108, U-turns and enters the end of barrel tube 106 adjacent the breech plug. The maintenance fluid may be filtered by barrel tube filter 126 attached at the end of the barrel tube 106.
(52) FIGS. 5-7 show a second embodiment 200 of the invention which system further comprises a breech plug 208 (not shown in FIGS. 5-7 but shown in FIG. 8). This embodiment of the firearm maintenance system 200 comprises a pump 202, a muzzle seal 204 and may comprise an optional barrel tube 206.
(53) FIGS. 8 and 8A show an exploded view of second embodiment 200 of the invention being used in conjunction with a breech plug 208 in relative position with a barrel 10 of a firearm, the barrel having a breech end 12 and a muzzle end 14. As further shown in FIG. 8 and FIG. 8A, pump 202 may comprise a housing 210 having a suction side 212 and a discharge side 214. Pump 202 may further comprise an impeller 216. Flow from discharge side 214 flows into outlet conduit 220. A squeeze bottle, syringe, or other maintenance fluid reservoir may be connected to a connection at inlet valve 236 to provide access for an initial flow of maintenance fluid into the inlet conduit 218. Once a charge of maintenance fluid has been placed into the firearm maintenance system, inlet valve 236 may be closed thereafter forming a closed system. Maintenance fluid may be discharged from discharge side 214 through outlet valve 238.
(54) Outlet conduit 220 provides flow to barrel plug 222 which has flow channels (or conduits) 232. Barrel plug 222 extends into muzzle seal 204. A forward end 242 of barrel plug extends into the muzzle of barrel 10, where flow channels 232 extend through to the forward end 242. Barrel plug 222 has a rearward end having a flange 244 which may, but not necessarily, abut against the muzzle. Flange 244 may have an O-ring groove 246 to provide for sealing within pump body 210. Barrel plug 222 provides a flow of maintenance fluid into barrel 10. The maintenance fluid flows to breech plug 208 which prevents flow of the maintenance fluid past the breech end 12 of the barrel 10.
(55) As depicted in some figures including FIGS. 8 and 8A, a barrel tube 206 may be utilized with some embodiments of the system. If used, an end of barrel tube 206 extends through an opening 240 of barrel plug 222, with the end disposed adjacent suction side 212. Flow channels 232 of barrel plug 222 are disposed around the exterior of barrel tube 206. When installed to a firearm, barrel tube 206 extends through barrel plug 222 into the barrel 10 of the firearm. Maintenance fluid flows through flow channels 232 and enters the annular space defined by the exterior of barrel tube 206 and the interior of barrel 10. The flow of maintenance fluid, blocked by breech plug 208, U-turns and enters the end of barrel tube 206 adjacent the breech plug. The maintenance fluid may be filtered by barrel tube filter 226 attached at the end of the barrel tube 206.
(56) FIGS. 9-10 show an assembly of firearm maintenance system 100 except for breech plug 108 and muzzle seal 104 which, while not shown in the figures, are still utilized in this embodiment. Muzzle seal 104 is not shown to better illustrate the interaction of barrel plug 122 with pump 102 and optional barrel tube 106. FIGS. 9-10 depict pump 102, barrel plug 122, and barrel tube 106. Motor 124 may be attached to the rear of pump 102. A barrel tube filter 126 may be attached to the end of barrel tube 106 or other convenient hydraulic location for particulate filtration. If used, barrel tube 106 will extend into the barrel of the firearm with the end of the barrel tube disposed adjacent to the breech plug when the system has been attached to a firearm. Maintenance fluid will typically flow in the annulus formed between the exterior of the barrel tube 106 and the interior of the barrel 10 of the firearm with flow entering barrel tube filter 126 and returning to the pump inlet for either continued circulation in the barrel of the firearm or for discharge from the barrel of the firearm.
(57) FIG. 10 shows an exploded view of the assembly of FIG. 9 of firearm maintenance system 100. System 100 has a pump 102 with an impeller 116. System 100 may further comprise an optional media heater 128 which may be a resistance-type heater having electrical leads 130 for providing heating to the maintenance fluid. Pump 102 is configured to discharge a flow of maintenance fluid through barrel plug 122 to the firearm. An optional barrel tube 106 may extend from barrel plug 122. Barrel plug 122 comprises flow channels (or conduits) 132 which direct flow around the exterior of barrel tube 106 for delivery into the barrel of a firearm. System 100 may further comprise sight tube 134 which attaches to swivel tube fittings 136. A check valve 138 may be disposed at inlet 118. Sight tube 134 allows the user to verify that there is fluid flow from outlet 114, though other sighting devices like sight glasses may be employed.
(58) FIG. 11 depicts system 100a in anticipation of being used to clean a pump action shotgun 1000. It is to be appreciated that a pump action shotgun may be cleaned with the barrel removed as shown in FIG. 12, where a cork plug is utilized to seal the breach end of the barrel. However, it is possible, to install the breech plug 108a into the breech end of the shotgun barrel by “loading” the breech plug into the shotgun as if it were a shotgun shell. The firearm action will hold the breech plug in place and keep the breech plug from backing out under pressure. The other components of the system 100a are attached from the muzzle end 14a of the barrel 10a. FIG. 11 shows these components—the pump 102a, the muzzle seal 104a, the barrel tube 106a, and the barrel plug 122a spaced linearly apart from one another. However, when these components are attached to the shotgun 1000, the components will appear as shown in FIGS. 1 and 2, with barrel tube 106a inserted within barrel 10a with muzzle seal 104a secured over muzzle end 14a of barrel 10a.
(59) FIG. 11 shows the internal components of muzzle seal 104a withdrawn from seal housing 148a, the internal components being muzzle seal grommet 150a. FIG. 11 depicts a two-piece split configuration for muzzle seal grommet 150a, although it is to be appreciated that a single piece grommet configuration may also be utilized. The muzzle seal grommets 150a work to squeeze the end of the barrel and clear the sights or other protuberances as the pump 102a is threaded into the muzzle seal 104a.
(60) FIG. 11 also shows the use of a barrel plug 122a which may be utilized for firearms having a large bore barrel, such as for shotguns and large caliber rifles. However, barrel plug 122a may be used for all calibers not having a muzzle device or where it will properly seal.
(61) FIG. 13 depicts system 100b in anticipation of being used to clean a handgun 2000. It is to be appreciated that semi-automatic handguns may be cleaned with the barrel removed, although it is possible to install the breech plug 108b into the breech end of the handgun barrel as if it were a handgun bullet. The other components of the system 100b are attached from the muzzle end 14b of the barrel 10b. FIG. 12 shows these components—the pump 102b, the muzzle seal 104b, the barrel tube 106b, and the barrel plug 122b spaced linearly apart from one another. However, when these components are attached to the handgun 2000, the components will appear as shown in FIGS. 1 and 2, with barrel tube 106b inserted within barrel 10b with barrel seal 104b secured over muzzle end 14b of barrel 10b.
(62) FIG. 13 shows the internal components of muzzle seal 104b withdrawn from seal housing 148b, the internal components being muzzle seal grommet 150b. FIG. 12 depicts a two-piece split configuration for muzzle seal grommet 150b although it is to be appreciated that a single piece grommet configuration may also be utilized. The muzzle seal grommets 150b work to squeeze the end of the barrel and clear the sights or other protuberances as the pump 102b is threaded into the muzzle seal 104b.
(63) FIG. 13 also show the use of a barrel plug 122b which may be utilized for small caliber firearms, such as pistols (e.g., 9 mm, 10 mm, 45 auto, etc.).
(64) FIG. 14 depict system 100c in anticipation of being used to clean a barrel 10c of a firearm having a muzzle device 3000. FIGS. 15, 15A and 15B depict system 100c as installed on a barrel 10c of a firearm having a muzzle device 3000. System 100c is used with breech plug 108c inserted into breech end 12c of barrel 10c. The other components of the system 100c are attached from the muzzle end 14c of the barrel 10c, these components being the pump 102c, muzzle seal 104c, barrel tube 106c, and a special barrel plug 122c. Barrel plug 122c is made of either a one piece or two-piece design. Barrel plug 122c is configured to clamp or wrap, stretch and seal over the muzzle device 3000.
(65) FIGS. 16-21 depict an embodiment of a pump 102 which may be utilized in embodiments of the firearm maintenance system 100. FIG. 16 shows a perspective view of the pump 102. Media heater 128, not shown, may be installed into pump 102 by insertion into aperture 160.
(66) FIG. 17 shows a bottom view of pump 102 showing pump outlet 162. Barriers 164 redirect outlet flow from pump 102 to ensure concentric flow to the barrel 10 and/or muzzle device.
(67) FIG. 18 shows a first side view of pump 102 with FIG. 19 showing a sectional view taken along line 19-19 of FIG. 18. FIG. 19 shows the shroud 166 where impeller 116 is disposed. FIG. 19 also shows receptacle 168 where barrel tube 106 may be received in pump 102. FIG. 19 also shows sealing surface 170 which seals against flange 144 of barrel plug 122. Pump inlet channel 172 receives flow from barrel tube 106 to the impeller low pressure zone.
(68) FIG. 20 shows a second side view of pump 102 with FIG. 21 showing a sectional view taken along line 20-20 of FIG. 20. FIG. 21 shows pump outlet 174. Also shown is aperture 176. Aperture 176 provides an air vent during inflow of maintenance fluid through aperture 178. Aperture 176 also provides a port for swivel tube fitting 136 to which sight tube 134 is attached. Aperture 178 provides a flow path for maintenance fluid. A check valve seat 180 is set within aperture 178 for seating check valve 138. Aperture 178 also provides a port for a second swivel tube fitting 136. Flow channel 182 provides the conduit for flow of maintenance fluid to the barrel plug 122.
(69) FIG. 22 shows a side view of an embodiment of a muzzle seal 104 for use on a firearm with a “bare” barrel configuration (i.e., a barrel without muzzle device or exterior protuberances). Muzzle seal 104 has a muzzle seal housing 148. FIG. 23 shows a sectional view taken along line 23-23 of FIG. 22. Pump 102 may comprise an end having external threads which may be threaded into end 184 of muzzle seal housing 148 having internal threads (not shown). As pump 102 is threaded into the muzzle seal housing 148, it comes into contact with the ends of muzzle seal grommets 150. Further rotation of pump into the muzzle seal housing 148 urges muzzle seal grommets 150 toward the front of the muzzle seal 104 along the interaction surface where the internal diameter of the muzzle seal housing 148 is reduced, causing the muzzle seal grommets 150 to squeeze tighter against barrel 10. Seal grommets 150 may comprise a ribbed profile which enhances the grip of the grommets against barrel 10. Muzzle seal grommets 150 define an internal diameter which allows clearance for iron sights on the barrel 10.
(70) FIG. 24 shows a side view of an embodiment of a muzzle seal 104a for use on a shotgun. Muzzle seal 104a has a muzzle seal housing 148a. FIG. 25 shows a sectional view taken along line 25-25 of FIG. 24. Pump 102a may comprise an end having external threads which may be threaded into end 184a of muzzle seal housing 148a having internal threads (not shown). As pump 102a is threaded into the muzzle seal housing 148a, it comes into contact with the ends of muzzle seal grommets 150a. Further rotation of pump 102a into the muzzle seal housing 148a urges muzzle seal grommets 150a toward the front of the muzzle seal 104a along the interaction surface where the internal diameter of the muzzle seal housing 148a is reduced, causing the muzzle seal grommets 150a to squeeze tighter against barrel 10a. Seal grommets 150a may comprise a ribbed profile which enhances the grip of the grommets against barrel 10a. A relief 186a is provided in muzzle seal 104a to provide clearance for iron sights or other protuberances on the shotgun barrel 10a.
(71) FIG. 26 shows a side view of an embodiment of a muzzle seal 104b for use on a pistol. Muzzle seal 104b has a muzzle seal housing 148b. FIG. 27 shows a sectional view taken along line 27-27 of FIG. 26. Pump 102b may comprise an end having external threads which may be threaded into end 184b of muzzle seal housing 148b having internal threads (not shown). As pump 102b is threaded into the muzzle seal housing 148b, it comes into contact with the ends of muzzle seal grommets 150b. Further rotation of pump 102b into the muzzle seal housing 148b urges muzzle seal grommets 150b toward the front of the muzzle seal 104b along the interaction surface where the internal diameter of the muzzle seal housing 148b is reduced, causing the muzzle seal grommets 150b to squeeze tighter against barrel 10b. Seal grommets 150b may comprise a ribbed profile which enhances the grip of the grommets against barrel 10b. A clearance channel 186b is provided in muzzle seal 104b to provide clearance for iron sights or other protuberances on the handgun 10b.
(72) FIG. 28 shows a side view of an embodiment of a muzzle seal 104c for use on a firearm having a muzzle device. Muzzle seal 104c has a muzzle seal housing 148c. FIG. 29 shows a sectional view taken along line 29-29 of FIG. 28. Pump 102c may comprise an end having external threads which may be threaded into end 184c of muzzle seal housing 148c having internal threads (not shown). As pump 102c is threaded into the muzzle seal housing 148c, it squeezes the material of the barrel plug 122c causing the barrel plug to conform to the shape over the muzzle device 3000. As discussed above, barrel plug 122c is made of either a one piece or two-piece design and is composed of a material which is configured to clamp or wrap, stretch and seal over the muzzle device 3000, such as an elastomeric material.
(73) FIGS. 30-41 depict barrel plugs 122a-122c which may be utilized for different firearm calibers and configurations.
(74) FIGS. 30-33 depict an embodiment of a barrel plug 122a which may be utilized with a large caliber firearm. Barrel plug 122a has a plurality of flow channels 132a which are disposed in a radial pattern in about the exterior of a barrel plug 122a as exemplified in FIGS. 30-33. Barrel plug 122a has an opening 140a which axially extends through the body of the barrel plug from forward end 142a to flange 144a. Flange 144a may have an O-ring groove 146a.
(75) FIGS. 34-37 depict an embodiment of a barrel plug 122b which may be utilized with small caliber firearms. Barrel plug 122b has a plurality of flow channels 132b which are disposed in a radial pattern in about the exterior of a barrel plug 122b as exemplified in FIGS. 34-37. Barrel plug 122b has an opening 140b which axially extends through the body of the barrel plug from forward end 142b to flange 144b. Flange 144b may have an O-ring groove 146b.
(76) FIGS. 38-41 depict an embodiment of a barrel plug 122c which may be utilized with a firearm having a muzzle device 3000. Barrel plug 122c has a plurality of flow channels 132c which are disposed in a radial pattern about an exterior end of barrel plug 122c as shown in FIG. 38 which extend through the upper end to an interior surface as shown in FIG. 41. Barrel plug 122c has an opening 140c which axially extends through the upper portion of the barrel plug. Barrel plug 122c has an upper flange 144c which may have an O-ring groove 146c.
(77) Having thus described the preferred embodiment of the invention, what is claimed as new and desired to be protected by Letters Patent includes the following:
