US1773443A - Manufacture of silencers or exhaust tanks for machine guns and other automatic arms - Google Patents

Manufacture of silencers or exhaust tanks for machine guns and other automatic arms Download PDF

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Publication number
US1773443A
US1773443A US313792A US31379228A US1773443A US 1773443 A US1773443 A US 1773443A US 313792 A US313792 A US 313792A US 31379228 A US31379228 A US 31379228A US 1773443 A US1773443 A US 1773443A
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gases
silencer
chamber
casing
manufacture
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US313792A
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Wilman Zygmunt
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B49/00—Sulfur dyes
    • C09B49/10—Sulfur dyes from diphenylamines, indamines, or indophenols, e.g. p-aminophenols or leucoindophenols
    • 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
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/30—Silencers

Definitions

  • the exhaust tanks or silencers for machine-guns which have been heretofore tried, are constituted by a casing which is secured to the end of the gun and in which the expansion of the gases resulting from the combustion of the powder takes place.
  • the said casing is provided with an orifice situated along the trajectory so as to allow the projectile to pass.
  • the different builders have tried to arrange within the said casing linings in the form of hoppers, spirals, or other devices with the purpose of hindering the rapid outflow of gases to the atmosphere
  • Other builders have applied closing devices (valves) at the outlet ofthe apparatus so as to allow the projectile to pass freely and to retain within the silencer orexhaust tank the most part of the gases resulting from the combustion of the powder.
  • Figs. 1 and 2 each together constitute a longitudinal section of the silencer, the mating ends of the respective illustrations being on the line CC and DD of the respective figures.
  • Fig. 3 is a transverse section on the line A-A of Fig. 1.
  • Fig. 4 shows in section 00 AA the end of the silencer in the closed position of the flap' valves.
  • Fig. 5 shows two parts of a section showing the position of recoil and of complete opening, the said two partsmating on theljline E-E to form the complete section.
  • Theori'fices orvents (5) are usedforconveying the gases towards the surrounding chamber.
  • the other end of the case is closed by a plate (12) centrally provided with an orifice (1 3).
  • the flap valves (14) which oscillate about axes (15 jcan close the orifice (13). 5 l
  • the spring (16) placed inside the part (17) serves to maintain the flap valves in their open position.
  • the tube (18) in the extension of the central cylinder secures the forced opening of the flap valves in the position of recoil of the apparatus by introducing itself between the valves.
  • Two inner tubes (19) screwed into the plate (12) convey LhQ gases under a high pressure which is unavoidable for causing the rapid closing of the flap valves.
  • the external tubes (20) which always remain immovable are used for guiding the internal tubes (19).
  • the orifices (21) form the recesses for the balls (22). This device is used for allowing the passage of the gases from the rear chamber of the silencer to the intermediate chamber and opposes itself to the return of the latter in the reverse direction.
  • the orifice (23) are used for the escape of the gases enclosed within the rear chamber of the silencer or exhaust tank.
  • the bullet traverses the apparatus and passes to the exterior between the open flap valves.
  • the gases which follow the projectile are for the most part canalized, under a high pressure, into the rear chamber of the apparatus from which they pass partially under a lower pressure into the intermediate chain ber.
  • the tube (18) secures the opening of the flap valves in case the power of the gases and the spring would not have correctly performed this duty.
  • a silencer for automatic fire-arms including a casing to be removably fixed to the end of the barrel, means for dividing the casinto a plurality of chambers, means for directing the gases of the explosion in part into the rearmost chamber under their explosive pressure and then directing said gases into the intermediate chamber under a lower pressure, and means for directing that part of the gases which follows the projectile into the forward chamber under a relatively low pressure.
  • a silencer for automatic fire-arms including a casing to be removably fixed to the end of the barrel, means for dividing the casing into a plurality of chambers, means for directing the gases of the explosion in part into the rearmost chamber under their explosive pressure and then directing said gases into the intermediate chamber under a lower pressure, means for directing that part of the gases which follows the projectile into the forward chamber under a relatively low pressure, a valve operative to close the path of the projectile, and means to utilize the gases under high pressure from the rearmost chamher to exert a closing effect on the valve.
  • a silencer for automatic firearms including a casing to be removably fixed to the end of the barrel, means for dividing the cats ing into a plurality of chambers, means for directing the gases of the explosion in part into the rearmost chamber under their explosive pressure and then directing said gases into the intermediate chamber under a lower pressure, means for directing that part of the gases which follows the projectile into the forward chamber under a relatively low pressure, a valve operative to close the path of the pro ectile, and means to utilize the gases under high pressure fromthe rearmost chamher to exert a closing effect on the valve, said valve also controlling the escape of gases from the rear chamber to the exterior of the silencer.
  • a silencer for automatic fire-arms including a casing to be removably fixed to the end of the barrel, means for dividing the casing into a plurality of chambers, means for directing the gases of the explosion in part into the rearmost chamber under theirexplosive pressure and then directing said gases into the intermediate chamber under a lower pressure, means for directing that part of the gases which follows the projectile into the forward chamber under a relatively low pressure, a valve operativeto close the path of the projectile, means to utilize the gases under high pressure from the rearmost chamber to exert a closing effect on the valve, said .valve also controlling the escape of gases from the rear chamber to theexterior of the silencer,
  • a silencer including a cylinder removably secured upon the end of the barrel of the fire-arm, said cylinder having deflectors for directing the gases developed by the explosion exteriorly of the cylinder, a casing slidably mounted on the cylinder and fire-arm barrel, partitions secured to the cylinder and dividing the easing into a rear, intermediate and forward chamber, an extension carried by the casing, valves carried by the extension for closing the path of the bullet,means for normally holding the valves open, a communication between the rear chamber of the casing and the valves to direct the gases accumulated in said rear chamber to a position for operating upon the valves, and means for utilizing the gases accumulated in the rear chamber for suppressing the detrimental recoil of the gases toward the barrel.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Description

Aug. 19, 1930. .z. WILMAN 1,773,443
,MANUFACTURE OF SILENCERS OR EXHAUST TANKS FOR MACHINE GUNS AND OTHER AUTOMATIC ARMS Filed Oct. 20, 1928 3 Sheets-Sheet 1 Jay.
ma s/rrale. Z. M: Ma
Aug; 19, 1930; 2. WILMAN 1,773,443
MANUFACTURE OF SILENCERS OR EXHAUST TANKS FOR MACHINE GUNS AND OTHER AUTOMATIC ARMS Filed Oct. 20, 1928 5 Sheets-Sheet 2 Aug. 19, 1930. 2. WILMAN MANUFACTURE OF SILENCE'RS OR EXHAUST TANKS FOR MACHINE GUNS AND OTHER AUTOMATIC ARMS Filed Oct. 20, 1928 3 Sheets-Sheet 3 Ay/Avvmwe 7 2' M4 Ma/a/ Patented Aug. 19, 1939 ZYGMUNT WILMAN, orranrs, runner.
MANUFACTURE or srrnucnns R ExHAUsTTAnKs roe MACHINE suns AND OTHER AUTOMATIC ARMS 7 Application filed October 20, 1S28, Seria1 No. 313,792, and in France Uctober 27, 1927.-
The exhaust tanks or silencers for machine-guns which have been heretofore tried, are constituted by a casing which is secured to the end of the gun and in which the expansion of the gases resulting from the combustion of the powder takes place.
The said casing is provided with an orifice situated along the trajectory so as to allow the projectile to pass. In order to improve the operation, the different builders have tried to arrange within the said casing linings in the form of hoppers, spirals, or other devices with the purpose of hindering the rapid outflow of gases to the atmosphere Other builders have applied closing devices (valves) at the outlet ofthe apparatus so as to allow the projectile to pass freely and to retain within the silencer orexhaust tank the most part of the gases resulting from the combustion of the powder.
'- This last solution has given satisfactory results as regards the reduction of the noise produced by the explosion but these two solutions show great disadvantages, among which the most important is particularly caused by the gases retained within the silencer, under a somewhat high pressure, which recoiled with the barrel and which escaped through the breech when the empty shell'was auto matically extractedmeanwhile between the successive shots.
The said gases hindered the machine-gun and caused the clogging of the parts composing the machine-gun.
In order to obviate this inconvenience,
usewas made, besides, the fermeture atthe 7 outletof the apparatus, of another fermeture in the rear portion or the silencer, which latter fermeture was operating so as to cut off the connection between the exhaust tank or silencer and the barrel, before the automatic extraction of the empty shell.
This device, which has been utilized in con nection with some systems of machine-guns,
'7 has given satisfactory results, but cannot be applied to all systems of automatic arms. Consequently, the said system cannot be used, in such a general manner, as the system of silencer which forms the object of the present invention; f
The invention is illustrated in the accompanying drawings, in which: 7
Figs. 1 and 2 each together constitute a longitudinal section of the silencer, the mating ends of the respective illustrations being on the line CC and DD of the respective figures.
Fig. 3 is a transverse section on the line A-A of Fig. 1. Z I
Fig. 4 shows in section 00 AA the end of the silencer in the closed position of the flap' valves.
Fig. 5 shows two parts of a section showing the position of recoil and of complete opening, the said two partsmating on theljline E-E to form the complete section.
.ly as for example the hopper-shaped parts (4) which since known for a long time, do not form the object of the said invention. This device, which is even a secondary and supplementary one, can even be entirely left aside. I.
Theori'fices orvents (5) are usedforconveying the gases towards the surrounding chamber.
' T he case (6) which surrounds the central cylinder is divided into three chambers by means of the partitions (7) and (8) screwed upon the centralcylinder (rear, intermediate and front chamber). Moreover, these partitions or walls (7) and (8) are used for. guiding the case in its recoiling motion. This case can slide rearwardly until the moment when the part (9) screwed to the case will be retained by the spring (10) or stopped by the boss (11). I
The other end of the case is closed by a plate (12) centrally provided with an orifice (1 3). The flap valves (14) which oscillate about axes (15 jcan close the orifice (13). 5 l
The spring (16) placed inside the part (17) serves to maintain the flap valves in their open position.
' The tube (18) in the extension of the central cylinder secures the forced opening of the flap valves in the position of recoil of the apparatus by introducing itself between the valves.
Two inner tubes (19) screwed into the plate (12) convey LhQ gases under a high pressure which is unavoidable for causing the rapid closing of the flap valves.
The external tubes (20) which always remain immovable are used for guiding the internal tubes (19).
The orifices (21) form the recesses for the balls (22). This device is used for allowing the passage of the gases from the rear chamber of the silencer to the intermediate chamber and opposes itself to the return of the latter in the reverse direction.
The orifice (23) are used for the escape of the gases enclosed within the rear chamber of the silencer or exhaust tank.
The operation of the above described parts is as follows:
The bullet traverses the apparatus and passes to the exterior between the open flap valves. I
The gases which follow the projectile are for the most part canalized, under a high pressure, into the rear chamber of the apparatus from which they pass partially under a lower pressure into the intermediate chain ber.
The rest of the gases following the projectile expand substantially in passing through the orifices along the trajectory and fill, under a relatively low pressure, the front chamber of the silencer included between the partitions or walls (8) and (12).
At same time the gases of the external chamber, under a high pressure on the one hand, being in connection with the flap valves cause the same to close and the apparatus assumes the position as shown in Fig. 4 on the other hand, they exert a very important thrust upon the wall (7) which being fixedly connected with the barrel, causes the sudden motion of the arm forwardly so as to oppose the same to the usual recoil of the arm.
The same gases exert a similar pressure upon the opposite partition or wall (9) submitted to the resistance of a spring (10) and to the inertia of the recoiling mass of the apparatus. Consequently, the whole of the recoiling mass of the apparatus moves backwards as shown in. Fig. 5; the volume of the rear chamber increases and the rest of the gases which have not yet been able'to escape to the exterior, expand inside and their pressure becomes insufiicient to cause the detrimental recoil of the gases towards the barrel.
The pressure within the tubes (19) having decreased, cannot any longer maintain the flap valves in their closing position and the gases which tend to escape follow the projectile in causing the flap valves to open gradually.
The tube (18) secures the opening of the flap valves in case the power of the gases and the spring would not have correctly performed this duty.
The spring (16) being too weak to alford the security of the opening is moreover sufficiently strong to maintain the flap valves in their open position.
'After the following shot is fired, the apparatus returns to its original position as shown in Figs. 1 and 2. i
I claim:
1. A silencer for automatic fire-arms, including a casing to be removably fixed to the end of the barrel, means for dividing the casinto a plurality of chambers, means for directing the gases of the explosion in part into the rearmost chamber under their explosive pressure and then directing said gases into the intermediate chamber under a lower pressure, and means for directing that part of the gases which follows the projectile into the forward chamber under a relatively low pressure.
2. A silencer for automatic fire-arms, including a casing to be removably fixed to the end of the barrel, means for dividing the casing into a plurality of chambers, means for directing the gases of the explosion in part into the rearmost chamber under their explosive pressure and then directing said gases into the intermediate chamber under a lower pressure, means for directing that part of the gases which follows the projectile into the forward chamber under a relatively low pressure, a valve operative to close the path of the projectile, and means to utilize the gases under high pressure from the rearmost chamher to exert a closing effect on the valve.
3. A silencer for automatic firearms, including a casing to be removably fixed to the end of the barrel, means for dividing the cats ing into a plurality of chambers, means for directing the gases of the explosion in part into the rearmost chamber under their explosive pressure and then directing said gases into the intermediate chamber under a lower pressure, means for directing that part of the gases which follows the projectile into the forward chamber under a relatively low pressure, a valve operative to close the path of the pro ectile, and means to utilize the gases under high pressure fromthe rearmost chamher to exert a closing effect on the valve, said valve also controlling the escape of gases from the rear chamber to the exterior of the silencer.
4. A silencer for automatic fire-arms, including a casing to be removably fixed to the end of the barrel, means for dividing the casing into a plurality of chambers, means for directing the gases of the explosion in part into the rearmost chamber under theirexplosive pressure and then directing said gases into the intermediate chamber under a lower pressure, means for directing that part of the gases which follows the projectile into the forward chamber under a relatively low pressure, a valve operativeto close the path of the projectile, means to utilize the gases under high pressure from the rearmost chamber to exert a closing effect on the valve, said .valve also controlling the escape of gases from the rear chamber to theexterior of the silencer,
and means for opening the valve upon cessation of valve closing pressure.
5. A silencer lncluding a cyllnder removably secured upon the end of the barrel of the fire-arm, said cylinder having deflectors for directing the gases developed by the explo sion exteriorly of the cylinder, a casing slidably mounted on the cylinder and fire-arm barrel, partitions secured to the cylinder and dividing the casing into a rear, intermediate and forward chamber, an extension carried by the casing, valves carried by the extension for closing the path of the bullet, means for normally holding the valves open, and a communication between the rear chamber of the casing and the valves to direct the gases accumulated in said rear chamber to a position for operating upon the val es.
6. A silencer including a cylinder removably secured upon the end of the barrel of the fire-arm, said cylinder having deflectors for directing the gases developed by the explosion exteriorly of the cylinder, a casing slidably mounted on the cylinder and fire-arm barrel, partitions secured to the cylinder and dividing the easing into a rear, intermediate and forward chamber, an extension carried by the casing, valves carried by the extension for closing the path of the bullet,means for normally holding the valves open, a communication between the rear chamber of the casing and the valves to direct the gases accumulated in said rear chamber to a position for operating upon the valves, and means for utilizing the gases accumulated in the rear chamber for suppressing the detrimental recoil of the gases toward the barrel.
' ZYGMUNT WILMAN.
US313792A 1927-10-27 1928-10-20 Manufacture of silencers or exhaust tanks for machine guns and other automatic arms Expired - Lifetime US1773443A (en)

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Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667570A (en) * 1968-01-24 1972-06-06 Michael H Adair Silencers for firearms, internal combustion engines, or the like
US6425310B1 (en) * 2001-02-09 2002-07-30 Edwin J. Champion Muzzle brake
US20080148928A1 (en) * 2006-12-22 2008-06-26 Mcclellan W Thomas Firearm suppressor, mounting system and mounting method
US20110036233A1 (en) * 2008-07-23 2011-02-17 Advanced Armament Corp. Booster for handgun silencers
US8196701B1 (en) 2010-02-11 2012-06-12 OS Inc. Acoustic and heat control device
US8424441B2 (en) 2009-08-20 2013-04-23 Advanced Armament Corp. Firearm suppressor booster system
US8516941B1 (en) 2010-02-11 2013-08-27 O.S.S. Holdings, LLC Interchangeable, modular firearm mountable device
US8561757B1 (en) * 2011-11-28 2013-10-22 Richard A. Edsall Firearm suppressor
US8579075B2 (en) 2008-03-13 2013-11-12 Advanced Armament Corp., Llc Blackout silencer
US8671818B1 (en) 2010-11-30 2014-03-18 O.S.S. Holdings, LLC Firearm discharge gas flow control
US8695475B2 (en) * 2010-05-06 2014-04-15 Rheinmetall Waffe Munition Gmbh Signature-reduced muzzle brake
US8790434B1 (en) 2010-02-11 2014-07-29 O.S.S. Holdings, LLC Particulate capture from a high energy discharge device
US8857306B1 (en) * 2013-07-05 2014-10-14 Richard A. Edsall Firearm suppressor
US8939057B1 (en) 2013-09-12 2015-01-27 Richard A. Edsall Firearm suppressor
USD723647S1 (en) 2013-09-25 2015-03-03 Russell Oliver Compression module for firearm suppressors
US20150135935A1 (en) * 2013-10-10 2015-05-21 William Schoenlau Rifle Noise Suppressor
US9316456B1 (en) 2013-10-17 2016-04-19 Oss Suppressors Llc Firearm discharge gas flow control modules and associated methods
US9400151B1 (en) * 2015-01-27 2016-07-26 Richard A. Edsall Semi-automatic firearm suppressor
US9541345B2 (en) 2014-03-18 2017-01-10 Steven H. Schwartzkopf Recoil and muzzle blast controller for firearms
US20170102201A1 (en) * 2015-10-07 2017-04-13 Century International Arms, Inc. Sound suppressor
US9658019B2 (en) 2014-09-19 2017-05-23 Ra Brands, L.L.C. Silencer and mounting system
US10088260B1 (en) * 2018-02-26 2018-10-02 Yury Badanin Bullet suppressor
EP3385658A1 (en) * 2017-04-06 2018-10-10 Delta P Design, Inc. Multi-baffled firearm suppressor
US10228210B2 (en) * 2017-03-03 2019-03-12 Cgs Group, Llc Suppressor with varying core diameter
US20190195590A1 (en) * 2016-04-13 2019-06-27 APD Manufacturing, LLC Firearm sound suppressor
US20200025495A1 (en) * 2018-01-23 2020-01-23 Delta P Design, Inc. Suppressor with blowout panel
US20200049442A1 (en) * 2017-04-06 2020-02-13 Delta P Design, Inc. Multi-baffled firearm suppressor
US10718587B2 (en) * 2016-07-18 2020-07-21 Brevex Sa Silencer device for firearm
US11162753B2 (en) 2019-05-03 2021-11-02 Sig Sauer, Inc. Suppressor with integral flash hider and reduced gas back flow
US11255623B2 (en) 2019-04-30 2022-02-22 Sig Sauer, Inc. Suppressor with reduced gas back flow and integral flash hider
US11280571B2 (en) 2019-12-23 2022-03-22 Sig Sauer, Inc. Integrated flash hider for small arms suppressors
US11686547B2 (en) 2020-08-12 2023-06-27 Sig Sauer, Inc. Suppressor with reduced gas back flow
US20230272991A1 (en) * 2022-02-25 2023-08-31 Delta P Design, Inc. Firearm suppressor with gas-actuated valve
US20230272992A1 (en) * 2022-02-25 2023-08-31 Delta P Design, Inc. Firearm muzzle brake with gas-actuated valve
US11859932B1 (en) 2022-06-28 2024-01-02 Sig Sauer, Inc. Machine gun suppressor

Cited By (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667570A (en) * 1968-01-24 1972-06-06 Michael H Adair Silencers for firearms, internal combustion engines, or the like
US6425310B1 (en) * 2001-02-09 2002-07-30 Edwin J. Champion Muzzle brake
WO2002065045A3 (en) * 2001-02-09 2002-10-24 Edwin J Champion Muzzle brake
CN101589288B (en) * 2006-12-22 2012-12-12 托马斯·W·麦克莱伦 Improved firearm suppressor, mounting system and mounting method
WO2008147446A3 (en) * 2006-12-22 2009-04-30 Thomas W Mcclellan Improved firearm suppressor, mounting system and mounting method
US7516690B2 (en) * 2006-12-22 2009-04-14 Mcclellan W Thomas Firearm suppressor, mounting system and mounting method
US20080148928A1 (en) * 2006-12-22 2008-06-26 Mcclellan W Thomas Firearm suppressor, mounting system and mounting method
EP2097709A4 (en) * 2006-12-22 2013-02-20 Thomas W Mcclellan Improved firearm suppressor, mounting system and mounting method
US8579075B2 (en) 2008-03-13 2013-11-12 Advanced Armament Corp., Llc Blackout silencer
US20110036233A1 (en) * 2008-07-23 2011-02-17 Advanced Armament Corp. Booster for handgun silencers
US7891282B1 (en) * 2008-07-23 2011-02-22 Advanced Armament Corp. Booster for handgun silencers
US8424441B2 (en) 2009-08-20 2013-04-23 Advanced Armament Corp. Firearm suppressor booster system
US8196701B1 (en) 2010-02-11 2012-06-12 OS Inc. Acoustic and heat control device
US8516941B1 (en) 2010-02-11 2013-08-27 O.S.S. Holdings, LLC Interchangeable, modular firearm mountable device
US10690433B2 (en) 2010-02-11 2020-06-23 Oss Suppressors Llc Energy capture and control device
US8286750B1 (en) 2010-02-11 2012-10-16 O.S.S. Holdings, LLC Energy capture and control device
US8790434B1 (en) 2010-02-11 2014-07-29 O.S.S. Holdings, LLC Particulate capture from a high energy discharge device
US8826793B2 (en) 2010-02-11 2014-09-09 O.S.S. Holdings, LLC Interchangeable, modular firearm mountable device
US8695475B2 (en) * 2010-05-06 2014-04-15 Rheinmetall Waffe Munition Gmbh Signature-reduced muzzle brake
US8671818B1 (en) 2010-11-30 2014-03-18 O.S.S. Holdings, LLC Firearm discharge gas flow control
US8561757B1 (en) * 2011-11-28 2013-10-22 Richard A. Edsall Firearm suppressor
US8857306B1 (en) * 2013-07-05 2014-10-14 Richard A. Edsall Firearm suppressor
US8939057B1 (en) 2013-09-12 2015-01-27 Richard A. Edsall Firearm suppressor
USD723647S1 (en) 2013-09-25 2015-03-03 Russell Oliver Compression module for firearm suppressors
US20150135935A1 (en) * 2013-10-10 2015-05-21 William Schoenlau Rifle Noise Suppressor
US9316456B1 (en) 2013-10-17 2016-04-19 Oss Suppressors Llc Firearm discharge gas flow control modules and associated methods
US9423198B1 (en) * 2013-10-17 2016-08-23 Oss Suppressors Llc Flash hider with gas flow control modules and associated methods
US9541345B2 (en) 2014-03-18 2017-01-10 Steven H. Schwartzkopf Recoil and muzzle blast controller for firearms
US9658019B2 (en) 2014-09-19 2017-05-23 Ra Brands, L.L.C. Silencer and mounting system
US9400151B1 (en) * 2015-01-27 2016-07-26 Richard A. Edsall Semi-automatic firearm suppressor
US9739559B2 (en) * 2015-10-07 2017-08-22 Century International Arms, Inc. Sound suppressor
US20170102201A1 (en) * 2015-10-07 2017-04-13 Century International Arms, Inc. Sound suppressor
US20190195590A1 (en) * 2016-04-13 2019-06-27 APD Manufacturing, LLC Firearm sound suppressor
US10718587B2 (en) * 2016-07-18 2020-07-21 Brevex Sa Silencer device for firearm
US11300379B2 (en) * 2017-03-03 2022-04-12 Cgs Group, Llc Suppressor with varying core diameter
US10228210B2 (en) * 2017-03-03 2019-03-12 Cgs Group, Llc Suppressor with varying core diameter
EP3385658A1 (en) * 2017-04-06 2018-10-10 Delta P Design, Inc. Multi-baffled firearm suppressor
US20180292160A1 (en) * 2017-04-06 2018-10-11 Delta P Design, Inc. Multi-baffled firearm suppressor
AU2018201693B2 (en) * 2017-04-06 2024-01-18 True Velocity Ip Holdings, Llc Multi-Baffled Firearm Suppressor
US20200049442A1 (en) * 2017-04-06 2020-02-13 Delta P Design, Inc. Multi-baffled firearm suppressor
US10619963B2 (en) * 2017-04-06 2020-04-14 Delta P Design, Inc. Multi-baffled firearm suppressor
US11428489B2 (en) * 2017-04-06 2022-08-30 Delta P Design, Inc. Multi-baffled firearm suppressor
US10890404B2 (en) * 2017-04-06 2021-01-12 Delta Design, Inc. Multi-baffled firearm suppressor
US20200025495A1 (en) * 2018-01-23 2020-01-23 Delta P Design, Inc. Suppressor with blowout panel
US11326850B2 (en) * 2018-01-23 2022-05-10 Delta P Design, Inc. Suppressor with blowout panel
US20220221243A1 (en) * 2018-01-23 2022-07-14 Delta P Design, Inc. Suppressor with blowout panel
US10890403B2 (en) * 2018-01-23 2021-01-12 Delta P Design, Inc. Suppressor with blowout panel
US20250146780A1 (en) * 2018-01-23 2025-05-08 True Velocity IP Holdings, Inc. Suppressor with blowout panel
US12152852B2 (en) * 2018-01-23 2024-11-26 True Velocity IP Holdings, Inc. Suppressor with blowout panel
US10088260B1 (en) * 2018-02-26 2018-10-02 Yury Badanin Bullet suppressor
US11255623B2 (en) 2019-04-30 2022-02-22 Sig Sauer, Inc. Suppressor with reduced gas back flow and integral flash hider
US11162753B2 (en) 2019-05-03 2021-11-02 Sig Sauer, Inc. Suppressor with integral flash hider and reduced gas back flow
US11280571B2 (en) 2019-12-23 2022-03-22 Sig Sauer, Inc. Integrated flash hider for small arms suppressors
US11686547B2 (en) 2020-08-12 2023-06-27 Sig Sauer, Inc. Suppressor with reduced gas back flow
WO2023164344A3 (en) * 2022-02-25 2023-12-21 Delta P Design, Inc. Firearm suppressor with gas-actuated valve
US20230272992A1 (en) * 2022-02-25 2023-08-31 Delta P Design, Inc. Firearm muzzle brake with gas-actuated valve
US11976896B2 (en) * 2022-02-25 2024-05-07 True Velocity Ip Holdings, Llc Firearm muzzle brake with gas-actuated valve
US20230272991A1 (en) * 2022-02-25 2023-08-31 Delta P Design, Inc. Firearm suppressor with gas-actuated valve
US12276469B2 (en) 2022-02-25 2025-04-15 True Velocity IP Holdings, Inc. Firearm muzzle brake with gas-actuated valve
US11859932B1 (en) 2022-06-28 2024-01-02 Sig Sauer, Inc. Machine gun suppressor

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