It is common to attach different types of muzzle accessories to the barrel of a firearm, such as, for example, a handgun. One such muzzle accessory is a compensator (or muzzle brake). Compensators typically operate by redirecting a portion of discharge gasses upwardly from the muzzle of a firearm, thereby reducing (or compensating for) unwanted upward motion of the firearm caused by recoil forces. A flash suppressor is another type of muzzle accessory that reduces the visible signature of a firearm by cooling or dispersing hot discharge gases that exit the muzzle. A silencing muzzle accessory (also known as a silencer or suppressor) operates to modify and/or reduce the acoustic amplitude of a gunshot.
Typical methods for attaching muzzle accessories to firearm barrels have proved unsatisfactory. For instance, some muzzle accessories are provided with threaded holes that allow them to be screwed onto threaded barrels using high torque. Shims or crush washers are used to allow for proper alignment of such devices while maintaining adequate torquing force during installation. In other instances, one or more set screws are provided to apply lateral frictional forces to barrels to prevent rotation of muzzle accessories after alignment. These attachment methods, however, require specialized tools and bracing equipment to stabilize firearms during installation or removal of muzzle accessories. They are also time consuming, semi-permanent and may not be suitable in situations requiring frequent removal and/or replacement of muzzle accessories, as new shims/washers, careful alignment and retorquing are required for each installation. Repeated tightening of set screws after each installation may also result in stripping of the set screws and/or damage to barrel threads, rendering them ineffective for subsequent use. Such attachment methods also disadvantageously rely on frictional forces to maintain proper alignment of muzzle accessories, rendering them prone to inadvertent rotation or misalignment after repeated use.
There is thus a need for a removable muzzle accessory capable of being quickly and reliably aligned and affixed to a firearm in a toolless (or near toolless) fashion and without need for specialized bracing and other equipment.
Various embodiments of the present invention provide accessorized firearms and muzzle accessories that are capable of quick and easy alignment, installation and removal with little effort and without need for specialized tools. In accordance with an exemplary embodiment of the subject disclosure, an accessorized firearm is provided. The accessorized firearm includes a firearm including a barrel having a main firing tube and a transverse groove; and a muzzle accessory including an accessory body having a through-channel sized to receive the barrel of the firearm, and a locking member structured to engage the groove of the barrel to lock the muzzle accessory to the barrel.
In accordance with an aspect of the subject disclosure, the barrel further includes a cylindrical barrel extension extending distally from the main firing tube, the through-channel of the accessory body includes a barrel receptacle sized to receive the main firing tube of the barrel and an intermediate channel distally of and in communication with the barrel receptacle, the intermediate channel sized to receive the cylindrical barrel extension of the barrel.
In accordance with another aspect of the subject disclosure, the through-channel further includes an exit channel distally of and in communication with the intermediate channel, the exit channel having a diameter approximately equal to a diameter of a firing channel of the barrel.
In accordance with still another aspect of the subject disclosure, a first outside diameter of the cylindrical barrel extension is less than a second outside diameter of the main firing tube.
In accordance with yet another aspect of the subject disclosure, the first outside diameter of the cylindrical barrel extension is about 0.425 inches and the second outside diameter of the main firing tube is about 0.57 inches.
In accordance with still another aspect of the subject disclosure, the barrel further includes a distally facing annular ledge, the accessory body further includes a proximally facing annular wall at a boundary between the barrel receptacle and the intermediate channel, and the muzzle accessory further includes an O-ring positioned within the barrel receptacle between the annular ledge of the barrel and the annular wall of the accessory body.
In accordance with yet another aspect of the subject disclosure, the O-ring is compressed between the annular ledge of the barrel and the annular wall of the accessory body.
In accordance with still another aspect of the subject disclosure, the O-ring biases the accessory body to rotationally align the accessory body with respect to the barrel.
In accordance with yet another aspect of the subject disclosure, the accessory body further includes a lateral through-bore aligned with the groove of the barrel and the locking member includes a locking pin to engage the through-bore and the groove of the barrel.
In accordance with still another aspect of the subject disclosure, the locking pin includes a circumferential channel and the muzzle accessory further includes a detent spring to engage the circumferential channel.
In accordance with yet another aspect of the subject disclosure, the accessory body further includes a retention receptacle to receive the detent spring.
In accordance with still another aspect of the subject disclosure, the accessory body further includes a threaded bore and the muzzle accessory further includes a set screw within the threaded bore for maintaining the detent spring within the retention receptacle.
In accordance with yet another aspect of the subject disclosure, the accessory body further includes an access channel and the detent spring extends proximally from the retention receptacle into the access channel.
In accordance with still another aspect of the subject disclosure, the through-bore intersects the through-channel and the access channel.
In accordance with yet another aspect of the subject disclosure, the locking pin includes tapered ends.
In accordance with still another aspect of the subject disclosure, at least one side of the circumferential channel is tapered.
In accordance with yet another aspect of the subject disclosure, the firearm further includes a slide having a slot and a barrel receipt hole, the barrel is positioned within the slide and extends distally through the barrel receipt hole of the slide, and the accessory body includes an alignment tab structured to engage the slot of the slide.
In accordance with still another aspect of the subject disclosure, the barrel includes an outer surface provided with a receptacle and the alignment tab includes a lower surface provided with an alignment groove, the accessorized firearm further comprising an alignment key within the receptacle of the barrel, the alignment key being received by the alignment groove of the alignment tab.
In accordance with another exemplary embodiment of the subject disclosure, a muzzle accessory for installation on a barrel of a firearm is provided. The muzzle accessory includes an accessory body having a through-channel sized to receive a barrel of a firearm; and a locking member structured to engage the groove of the barrel to lock the muzzle accessory to the barrel.
In accordance with an aspect of the subject disclosure, the through-channel of the accessory body includes a barrel receptacle sized to receive the main firing tube of the barrel and an intermediate channel distally of and in communication with the barrel receptacle, the intermediate channel sized to receive the barrel extension of the barrel.
In accordance with still another aspect of the subject disclosure, the through-channel further includes an exit channel distally of and in communication with the intermediate channel, the exit channel having a diameter sized to approximately match a diameter of a firing channel of the barrel.
In accordance with yet another aspect of the subject disclosure, the accessory body further includes a proximally facing annular wall at a boundary between the barrel receptacle and the intermediate channel, the muzzle accessory further comprising an O-ring sized to be received within the barrel receptacle adjacent to the annular wall.
In accordance with still another aspect of the subject disclosure, the O-ring is constructed from a polymer capable of withstanding high temperatures.
In accordance with yet another aspect of the subject disclosure, the accessory body further includes a lateral through-bore positioned to align with the groove of the barrel when the barrel is received within the barrel receptacle of the accessory body, and the locking member includes a locking pin structured to engage the through-bore and the groove of the barrel.
In accordance with still another aspect of the subject disclosure, the locking pin includes a circumferential channel and the muzzle accessory further includes a detent spring positioned to engage the circumferential channel when the locking pin is inserted into the through-bore.
In accordance with yet another aspect of the subject disclosure, the accessory body further includes a retention receptacle sized to receive the detent spring.
In accordance with still another aspect of the subject disclosure, the accessory body further includes a threaded bore, the muzzle accessory further comprising a set screw within the threaded bore for maintaining the detent spring within the retention receptacle.
In accordance with yet another aspect of the subject disclosure, the accessory body further includes an access channel and the detent spring extends proximally from the retention receptacle into the access channel.
In accordance with still another aspect of the subject disclosure, the through-bore intersects the through-channel and the access channel.
In accordance with yet another aspect of the subject disclosure, the locking pin includes tapered ends and at least one side of the circumferential channel is tapered.
In accordance with still another aspect of the subject disclosure, the accessory body further includes an alignment tab structured to engage with a slot of a slide of the firearm.
In accordance with yet another aspect of the subject disclosure, the alignment tab includes a lower surface provided with an alignment groove sized to receive an alignment key of the barrel.
In accordance with still another aspect of the subject disclosure, the accessory body includes a sight-receipt hole to receive a front sight.
In accordance with yet another aspect of the subject disclosure, the accessory body includes an access window sized to receive a tool for affixing the front sight to the access body using a sight screw.
The following detailed description of an exemplary embodiment of the subject disclosure will be better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present disclosure, there is shown in the drawings an exemplary embodiment. It should be understood, however, that the subject application is not limited to the precise arrangements and instrumentalities shown.
Reference will now be made in detail to an exemplary embodiment of the subject disclosure illustrated in the accompanying drawings. Wherever possible, the same or like reference numbers will be used throughout the drawings to refer to the same or like features. It should be noted that the drawings are in simplified form and are not drawn to precise scale. In reference to the disclosure herein, for purposes of convenience and clarity only, directional terms such as upper, lower, top, bottom, above, below and diagonal, are used with respect to the accompanying drawings. Such directional terms used in conjunction with the following description of the drawings should not be construed to limit the scope of the subject disclosure in any manner not explicitly set forth. Additionally, the term “a,” as used in the specification, means “at least one.” The terminology includes the words above specifically mentioned, derivatives thereof, and words of similar import.
“About” as used herein when referring to a measurable value such as an amount, a temporal duration, and the like, is meant to encompass variations of ±20%, ±10%, ±5%, ±1%, or ±0.1% from the specified value, as such variations are appropriate.
“Substantially” as used herein shall mean considerable in extent, largely but not wholly that which is specified, or an appropriate variation therefrom as is acceptable within the field of art.
“Exemplary” as used herein shall mean serving as an example.
Throughout the subject application, various aspects thereof can be presented in a range format. It should be understood that the description in range format is merely for convenience and brevity and should not be construed as an inflexible limitation on the scope of the subject disclosure. Accordingly, the description of a range should be considered to have specifically disclosed all the possible subranges as well as individual numerical values within that range. For example, description of a range such as from 1 to 6 should be considered to have specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6 etc., as well as individual numbers within that range, for example, 1, 2, 2.7, 3, 4, 5, 5.3, and 6. This applies regardless of the breadth of the range.
Furthermore, the described features, advantages and characteristics of the exemplary embodiments of the subject disclosure may be combined in any suitable manner in one or more exemplary embodiments. One skilled in the relevant art will recognize, in light of the description herein, that the subject disclosure can be practiced without one or more of the specific features or advantages of a particular exemplary embodiment. In other instances, additional features and advantages may be recognized in certain exemplary embodiments that may not be present in all exemplary embodiments of the present disclosure.
Referring now to the Figures, there is shown an exemplary accessorized firearm 100 and muzzle accessory 200 in accordance with the present invention. Accessorized firearm 100 includes a firearm or handgun 105 with muzzle accessory 200 (e.g., a compensator, flash suppressor or silencer) coupled to handgun 105. Muzzle accessory 200 illustrated in the Figures is a compensator (or muzzle brake), though it should be appreciated that muzzle accessory 200 may be a flash suppressor, silencer or other muzzle device, and that various embodiments described and claimed herein are not intended to be limited to any particular type(s) of muzzle accessories. It should also be appreciated that muzzle accessory 200 may be used with other types of firearms, such as, for example, rifles and shotguns, and that various embodiments described and claimed herein are not intended to be limited in use to any specific type(s) of firearms.
As best shown in
Barrel 130 of handgun 105 includes a proximal end 140 having a chamber 145 for receiving rounds/projectiles to be fired and a distal end 150 having a substantially cylindrical main firing tube 155, a transverse groove 157 on a bottom outside surface of main firing tube 155 extending transversely to the longitudinal axis of barrel 130, and a cylindrically shaped barrel extension 160 coaxial with main firing tube 155 and extending distally therefrom by a predetermined length L1 (see
In the embodiments illustrated in the Figures, transverse groove 157 intersects the bottom outside surface of barrel 130, has a semi-circular cross section and extends approximately perpendicularly to the longitudinal axis of barrel 130 without intersecting firing channel 170. It should be appreciated, however, that transverse groove 157 may have a different cross-sectional shape (such as square or triangular) and may be wider and/or longer, depending on the dimensions of barrel 130. It should also be appreciated that transverse groove 157 and barrel extension 160 may be formed during manufacture of barrel 130 (such as when barrel 130 is designed specifically to engage with muzzle accessory 200) or, alternatively, may be formed by milling material from the distal end of a standard handgun barrel (or other firearm barrel) to provide after-market compatibility with muzzle accessory 200 and other muzzle accessories described and/or contemplated by the subject disclosure.
As best shown in
Accessory body 205 of muzzle accessory 200 includes a proximal end 230, a distal end 235, a top outer surface 290 having a sight-receipt hole 295 sized to receive a keyed portion 315 of front sight 310, a through-channel 240 extending longitudinally between proximal and distal ends 230, 235, a transverse and upwardly facing vent 245 communicating with through-channel 240 at distal end 235, a bottom portion 250 having an access window 300 communicating with a blind access channel 255 extending distally and substantially parallel to through-channel 240 from proximal end 230, a sloping lip 260 protruding downwardly from a top side 265 of access channel 255 and forming a retention groove 270, a blind retention receptacle 275 communicating with and extending distally from retention groove 270, a threaded bore 280 intersecting retention receptacle 275 and extending transversely therefrom to an outside curved surface 252 of bottom portion 250, a through-bore 305 extending laterally and completely through proximal end 230 between and intersecting through-channel 240 and access channel 255, and a U-shaped alignment tab 307 at proximal end 230.
Through-channel 240 of accessory body 205 includes a barrel receptacle 325 at proximal end 230. Barrel receptacle 325 is substantially cylindrical and has a diameter approximately equal to (but slightly larger than) diameter D2 of main firing tube 155 of barrel 130, thereby allowing barrel receptacle 325 to closely receive barrel 130. Through-channel 240 also includes a proximally facing annular wall 345 at the distal end of barrel receptacle 325, an intermediate channel 330 in communication with barrel receptacle 325 and sized to closely receive barrel extension 160 of barrel 130 (i.e., intermediate channel 330 has a diameter approximately equal to, but slightly larger than, diameter D1 of barrel extension 160), and an exit channel 335 having a tapered end 340 and a diameter approximately equal to that of firing channel 170 of barrel 130. In this manner, firing channel 170 of barrel 130 and exit channel 335 of accessory body 205 form a substantially continuous channel for a fired projectile when muzzle accessory 200 is affixed to handgun 105.
Locking pin 210 is a cylindrically-shaped locking member positioned within through-bore 305 of accessory body 205. As best shown in
U-shaped alignment tab 307 of accessory body 205 engages with slot 122 of slide 120 to assist in properly aligning accessory body 205 relative to accessorized firearm 100 and preventing rotation of accessory body 205 with respect to barrel 130. As shown in the embodiment illustrated in
Inadvertent removal of locking pin 210 laterally from accessory body 205 is prevented by a pin-like detent spring 220, which extends proximally from retention receptacle 275 through retention groove 270 where it engages one of circumferential channels 355 of locking pin 210. Set screw 225 in threaded bore 280 maintains detent spring 220 firmly within retention receptacle 275 to prevent inadvertent removal thereof from accessory body 205, though it should be appreciated that retention receptacle 275 may be sized to frictionally maintain detent spring 220 in position (such as, e.g., via a press-fit), thereby obviating the need for set screw 225 and threaded bore 280. Set screw 225 and threaded bore 280 may be dispensed with also in other embodiments, such as those that include a bent detent spring 370 having a vertical portion 375 positioned to engage locking pin 210 to prevent spring 370 from displacing proximally and out of retention receptacle 275 (see
O-ring 215 is positioned at the distal end of barrel receptacle 325. O-ring 215 is maintained under compression between annular wall 345 of accessory body 205 and annular ledge 165 of barrel 130 when through-bore 305 aligns with groove 157 of barrel 130 to receive locking pin 210. In this manner, O-ring 215 forms a gas-tight seal that prevents discharge gasses expelled from distal end 150 of barrel 130 from escaping accessory body 205 proximally along the boundary between the outer surface of barrel 130 and the inner surface of barrel receptacle 325. Biasing forces exerted by O-ring 215 under compression also help retain locking pin 210 within through-bore 305 by producing frictional engagement between locking pin 210 and the distal side of groove 157 of barrel 130, as well as between locking pin 210 and the proximal side of through-bore 305. Frictional engagement between locking pin 210 and the distal side of groove 157 also advantageously forces accessory body 205 into proper rotational alignment to the extent tolerances in fit among pin 210, groove 157 and/or through-bore 305 allow for rotational play and potential misalignment of accessory body 205 with respect to barrel 130. In at least some embodiments, O-ring 215 is formed from a polymer capable of withstanding high temperatures associated with discharge gasses and/or compression over extended periods of time without losing substantial elasticity.
O-ring 215 may be dispensed with to the extent O-ring 215 is optional, not required or otherwise undesirable. This may be the case, for example, where a gas-tight seal is unnecessary due to tight tolerances in fit between barrel 130 and barrel receptacle 325 and/or tolerances in fit among pin 210, groove 157 and/or through-bore 305 are tight and do not result in substantial rotational play of accessory body 205 with respect to barrel 130. To compensate for rotational play in situations where a gas-tight seal is optional or unnecessary, O-ring 215 may be replaced with an annular wave spring or other biasing member to provide the necessary biasing forces to align accessory body 205 with respect to barrel 130.
Although detent spring 220 engages only one of the circumferential channels 355 of locking pin 210 (referred to as the engaged circumferential channel 355), two channels 355 are provided symmetrically about center portion 365 to allow locking pin 210 to be inserted into through-bore 305 either end 350 first. It should be appreciated, however, that locking pin 210 may include only a single, off-center circumferential channel 355, and that various embodiments described and/or claimed herein are not intended to be limited to any number or orientation of channels 355.
Furthermore, while embodiments described and illustrated herein include substantially cylindrical locking pins 210, through-bores 305, and barrel grooves 157 having corresponding and substantially identical circular cross-sections, it should be appreciated that these features may be shaped to have different cross-sections, such as, for example, square or triangular-shaped cross-sections. A square-shaped cross section may be particularly advantageous, e.g., to provide enhanced alignment and engagement among locking pin 210, barrel 130 and accessory body 205, though it should be appreciated that various embodiments described and/or claimed herein are not intended to be limited to any particular cross-sectional shape(s) of these features. It should also be appreciated that locking pin 210 may include more gradually tapered surfaces at ends 350 and/or sides 360 of circumferential channels 355 to reduce the forces necessary for insertion and removal of locking pin 210 into and from through-bore 305 or, alternatively, may have more aggressively tapered surfaces to improve retention of locking pin 210 within through-bore 305. It should be appreciated, however, that various embodiments described and claimed herein are not intended to be limited to any particular taper at ends 350 and/or sides 360.
Referring now to
After front sight 310 is secured, the process proceeds to step 1115, at which the user inserts barrel 130 into through-channel 240 of accessory body 205 until distal end 150 of barrel 130 engages O-ring 215. Proper rotational orientation of accessory body 205 on barrel 130 is achieved quickly during this step by aligning and engaging U-shaped alignment tab 307 with slot 122 of slide 120. Then, at step 1120, the user exerts a longitudinal force by hand proximally against accessory body 205 to compress O-ring 215 between annular wall 345 of accessory body 205 and annular ledge 165 of barrel 130 and align through-bore 305 of accessory body 205 with groove 157 of barrel 130. The process then proceeds to step 1125, at which the user—while maintaining the longitudinal force against accessory body 205—inserts locking pin 210 into through-bore 305 to lock accessory body 205 to barrel 130. When locking pin 210 is first inserted, a tapered end 350 of pin 210 engages detent spring 220 causing spring 220 to displace downwardly against its biasing force. As insertion of locking pin 210 continues, the outer surface of pin 210 slides across detent spring 220 until one of circumferential channels 355 of pin 210 aligns with detent spring 220. At this point, detent spring 220 biases upwardly into the circumferential channel 355 to maintain pin 210 in place within accessory body 205. At step 1130, the user ceases applying the longitudinal force to accessory body 205, thereby causing biasing forces exerted by O-ring 215 under compression to assist in retaining locking pin 210 within through-bore 305. The process then ends at step 1135.
Referring now to
If the user selects the second method of removing muzzle accessory 200 from handgun 105, the process proceeds from step 1210 to step 1235. At step 1235, the user removes slide 120 and recoil spring assembly 135 from handgun 105 in known fashion (see
It should also be appreciated by those skilled in the art that changes may be made to the exemplary embodiments described above without departing from the broad inventive concept thereof. It is to be understood, therefore, that this disclosure is not limited to the particular exemplary embodiments disclosed, but it is intended to cover modifications within the spirit and scope of the claims defined herein.
The present application claims the benefit of U.S. Provisional Patent Application No. 63/300,001 filed on Jan. 16, 2022 and entitled “MUZZLE ACCESSORY,” the entire contents of which are expressly incorporated herein by reference.
Number | Date | Country | |
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63300001 | Jan 2022 | US |