US3748956A - Silencer for fire arms - Google Patents

Silencer for fire arms Download PDF

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Publication number
US3748956A
US3748956A US00259616A US3748956DA US3748956A US 3748956 A US3748956 A US 3748956A US 00259616 A US00259616 A US 00259616A US 3748956D A US3748956D A US 3748956DA US 3748956 A US3748956 A US 3748956A
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United States
Prior art keywords
silencer
return
end wall
flow chamber
openings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00259616A
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English (en)
Inventor
S Hubner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Walther GmbH
Original Assignee
Carl Walther GmbH Sportwaffenfabrik
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Filing date
Publication date
Application filed by Carl Walther GmbH Sportwaffenfabrik filed Critical Carl Walther GmbH Sportwaffenfabrik
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Publication of US3748956A publication Critical patent/US3748956A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/30—Silencers

Definitions

  • a silencer comprises a hollow cylindrical casing closed [21] Appl' Na: 259,616 by front and rear end walls having aligned openings to define a passage therethrough for a bullet and propellant gases emerging from the muzzle opening of a fire- Appllcamm Prlomy Data arm.
  • a plurality of partitions within the casing define June 4, 197l Germany P 21 27 877.3 chambers with at least one chamber being constructed as a return-flow chamber.
  • the partitions have openings [52] US. Cl 89/14 D therein for the passage of the bullet with the edges of [51] Int. Cl.
  • the present invention relates to silencers for hand firearms, more particularly, to the structure of a plurality of partitions within the silencer forwardly of a return-flow chamber.
  • silencers for hand firearms can be generally classified into two groups.
  • the discharge and propellant gases that follow the bullet into the silencer are stored for a short period of time in a plurality of successive chambers which are closed to the outside. This produces a throttle expansion of the propellant gases through the bullet exit opening in the front end wall of the silencer.
  • a second group at least a portion of the propellant gases are diverted to the exterior through a plurality of lateral openings in the silencer.
  • the silencers of the first group have gained particularly wide acceptance because of better efficiency.
  • the silencers of the second group have been employed, as a practical matter, only in those cases where it is desired to avoid the propagation of propellant gases at supersonic velocities and the velocities of the gases are to be lowered into the subsonic range prior to discharge of the bullet from the barrel.
  • Silencers have also been proposed in which there is provided a return-flow chamber positioned immediately adjacent to the silencer rear wall opening through which the bullet and gases enter the silencer.
  • a return-flow chamber positioned immediately adjacent to the silencer rear wall opening through which the bullet and gases enter the silencer.
  • Such a chamber is provided with a central tubular element to define a passage for the bullet and gases and is capable of receiving a large portion of the propellant gases following the projectile.
  • Such silencers equipped with retum-flow chambers have been found to be quite effective.
  • silencers it is a general rule that the silencing effect achieved in such silencers becomes greater as the manufacturing cost of the silencer increases.
  • the return-flow chamber type of silencer does not permit any further reduction of the noise of discharge below a certain sound level. This results from the fact that the forcing of the propellant gases to the desired degree of expansion and, accordingly, the possibility of a short period storage in the chambers cannot be effectively obtained with known silencers.
  • the silencer of the present invention which essentially comprises a holllow cylindrical casing having front and rear end walls with aligned openings therein to define a passage for the bullet and discharge gases.
  • a return-flow chamber is provided in the rearward portion of the silencer and has conical-shaped forward and rear walls.
  • a tubular element extends between the end walls of the return-flow chamber and is aligned with the passage for the bullet.
  • a plurality of partitions are positioned forwardly of the return-flow chamber with the partitions having passage openings therein.
  • Each passage opening has a serrated edge with the serrations being bent rearwardly to define a funnel which diverts effectively thegases flowing directly in front of, beside and behind the bullet.
  • the conical end walls of the return-flow chamber prevent an excessively uniform or smooth gas thrust and facilitate the flow of discharge gases through openings provided in the rear wall of the return-flow chamber. Gases entering the tubular element of the return-flow chamber behind the projectile are drawn off into the return-flow chamber through a plurality of lateral openings in the tubular element. The pressure waves thus formed by the discharge gases are partially extinguished by striking pressure waves reflected in the return-flow chamber.
  • FIG. 1 is a longitudinal sectional view through a silencer of the present invention
  • FIG. 2 is a front elevational view of one of the rear partitions in the silencer of FIG. 1;
  • FIG. 3 is a front elevational view of one of the forward partitions of the silencer of FIG. 1.
  • the silencer comprises a hollow cylindrical casing 10 closed by a rear end wall 11 and a front end wall 12.
  • the rear end wall 11 is provided with an entrance bore 13 through which projects a muzzle 14 of a hand firearm.
  • the muzzle 14 projects into the silencer and the silencer is attached to the muzzle by a threaded connection.
  • the front end wall 12 is provided with a bullet exit opening 15.
  • the exit opening 15 is the only opening in the silencer through which discharge gases can escape.
  • the interior of the silencer is divided into a plurality of individual chambers by means of a plurality of partitions.
  • a return-flow chamber 16 formed by a conical front end wall 17 and a conical rear end wall 18.
  • a tubular element 19 passes through the chamber 16 between the end walls 17 and 18 and forms a passage for a bullet and discharge gases.
  • the outer face of the return-flow chamber 16 is formed by the silencer casing 10.
  • a plurality of openings 20 are provided in the conical end wall 18 and openings 21 are provided in the tubular element 19 to provide passages for lateral flow of the discharge gases into the chamber 16.
  • the rear wall openings 20 are conical in shape which provides a throttling of the gases flowing outwardly from the return-flow chamber 16.
  • the two end walls 17 and 18 of the return-flow chamber are conical and taper toward the rear end wall 11 of the silencer.
  • the conical shape of rear end wall 18 avoids an excessive initial thrust exerted by the gases as they enter the silencer through opening 13.
  • the gases expanding in the chamber defined by the rear end wall 1 l and the conical wall 18 of the chamber flow through openings 20 into the interior of the return-flow chamber 16.
  • the conical shape of the front end wall 17 forces an expansion of the propellant gases discharged from the tubular element 19 in a forward direction.
  • the gases immediately following the bullet passing through the tubular element 19 are drawn through the lateral openings 21 into the interior of the return-flow chamber. This will continue until the pressure is equalized between the interior of the tube 19 and the interior of the return-flow chamber 16. In addition, the air displaced by the bullet passing through the tube 19 is drawn through openings 21 into the return-flow chamher.
  • provisions are made to avoid or at least diminish the effect of the pressure wave pushed in front of the bullet. This is achieved by positioning a very coarse wire screen 22 in the interior of the returnflow chamber 16.
  • the wires of the screen have a diameter or thickness of at least 0.5 to 1.0 mm. and preferably the wires have a rectangular cross-section.
  • the pressure waves expanding within the return-flow chamber 16 and basically originating from the propellant gases flowing in through openings 20 of the rear wall 18 of the return flow chamber and partially overtaking the movement of the bullet are broken up and partially re flected by the wire screen 22.
  • the pressure waves reflected by the wire screen 22 and the front end wall 17 of the return-flow chamber thus partially extinguish subsequent pressure waves and, in effect, bring about a phase shift of 180 in the pressure waves.
  • the wire screen is thus not employed for the purpose of absorbing the energy of propellant gases as in the case of known wire screens but for bringing about a maximum reflection of the pressure waves within the return flow chamber.
  • Additional chambers are formed subsequently to the return-flow chamber 16 by a plurality of partitions 23, 24, 25 and the inner face of the cylindrical casing 10. These partitions are provided with passage openings 26 arranged concentrically with respect to the casing and are aligned with the tubular element 19 so as to define a passage through the silencer for the bullet and discharge gases.
  • the partitions 23, 24 and 25 are in the form of discs.
  • the edges of the passage openings 26 are notched or serrated with these serrations being bent rearwardly toward the casing rear end wall 11.
  • the rearward partitions 23 or those furthest away from the front wall of the silencer have prongs or serrations 27 which are larger than the prongs or serrations 28 of the forward partitions 24 and 25.
  • the passage openings 26 as defined by the prongs 27 and 28 are funnel-shaped which divert or expand the propellant gases passing through the passages 26 as known in the art.
  • the' foremost partitions 25 are provided with additional openings 29 that facilitate the equalization of the overpressure prevailing in the silencer after a shot to the atmosphere pressure outside of the silencer.
  • the rearwardly bent serrations or prongs 27 and 28 in the partitions subsequent to the return-flow chamber 16 function to break up the waves produced by the bullet passing through the silencer. They produce an effective turbulence in the cylindrical column of discharge gases following the bullet and also in the gases flowing directly beside the bullet or drawn along by the bullet. Thus, the gases are progressively diverted into the chambers formed by the partitions 23, 24 and 25. Itis preferable that the extent of bending of the prongs or serrations, and thus their lengths, increases from the front toward the rear of the silencer. This structure enables the funnel-shaped bent edges of the passages 26 to bring about an expansion of the discharge gases that are rendered turbulent.
  • the partitions 23, 24 and 25 having the prongs 27 and 28 can be manufactured and mounted in the cylindrical casing 10 in a simple operation.
  • the partitions can be formed of duraluminum discs and the passages 26 formed by punching cross slots at the centers of the discs and by bending the resulting prongs or serrations by a suitable punch.
  • the hole 26 is bored initially so that the lengths of the prongs 28 are relatively small.
  • Tubular sleeves 30 are positioned within the casing 10 between discs 23, 24, 25, end walls 17 and 18 of the return-flow chamber 16 and outer end walls 11 and 12 of the silencer for axially spacing the components within the silencer and for positioning the components therein.
  • the present invention has disclosed an improved silencer comprising a return-flow chamber and a plurality of partitions defining successive chambers therein.
  • the edges of the passages in the partitions are funnel-shaped and notched to improve the diversion and expansion of the gases and to enhance the turbulence of the gases diverted into the individual chambers.
  • the components of the silencer are simple in structure and can be assembled with a minimum of labor so that the result is a simple but effective silencer which'is relatively inexpensive in cost.
  • a silencer for a firearm comprising a hollow cylindrical casing having a front end wall and a rear end wall, said rear end wall having an entrance opening through which a bullet and discharge gases pass from the muzzle opening of a firearm said front end wall having an exit opening aligned with said entrance opening to define a passage for a bullet and gases through the casing, a plurality of partitions each having a passage opening therein within said casing to define a plurality of chambers, means within one of said chambers for defining a return-flow chamber having conical front end and rear end walls, a tubular element between the end walls of said return-flow chamber aligned with said passage, there being openings in the wall of said tubular element, the edges of the partition passage openings forwardly of said return-flow chamber being serrated and bent toward the casing rear end wall.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
US00259616A 1971-06-04 1972-06-05 Silencer for fire arms Expired - Lifetime US3748956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712127877 DE2127877A1 (de) 1971-06-04 1971-06-04 Schalldämpfer für Handfeuerwaffen

Publications (1)

Publication Number Publication Date
US3748956A true US3748956A (en) 1973-07-31

Family

ID=5809884

Family Applications (1)

Application Number Title Priority Date Filing Date
US00259616A Expired - Lifetime US3748956A (en) 1971-06-04 1972-06-05 Silencer for fire arms

Country Status (8)

Country Link
US (1) US3748956A (de)
BE (1) BE784346A (de)
CH (1) CH539833A (de)
DE (1) DE2127877A1 (de)
ES (1) ES403470A1 (de)
FR (1) FR2141782B1 (de)
IL (1) IL39592A0 (de)
IT (1) IT956125B (de)

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291610A (en) * 1977-12-05 1981-09-29 Shimon Waiser Silencer for firearms
US4530417A (en) * 1983-06-22 1985-07-23 Sw Daniel, Inc. Suppressor
US4576083A (en) * 1983-12-05 1986-03-18 Seberger Jr Oswald P Device for silencing firearms
US4584924A (en) * 1981-11-03 1986-04-29 Mitsuo Taguchi Silencer for firearms
US4588043A (en) * 1983-03-28 1986-05-13 Finn Charles A Sound suppressor for a firearm
US4907488A (en) * 1988-03-29 1990-03-13 Seberger Oswald P Device for silencing firearms and cannon
US5029512A (en) * 1990-04-16 1991-07-09 Latka Gregory S Firearm muzzle silencer
US6374718B1 (en) * 2000-07-14 2002-04-23 Tactical Operations Inc. Silencer for shotguns and a method of making the same
US20040173403A1 (en) * 2003-03-08 2004-09-09 Shafer Gordon Scott Suppressor for a paintball marker
US6796214B2 (en) * 2000-02-15 2004-09-28 Hans Petter Hausken Firearm silencer
US7237467B1 (en) * 2004-04-28 2007-07-03 Douglas M. Melton Sound suppressor
US7308967B1 (en) * 2005-11-21 2007-12-18 Gemini Technologies, Inc. Sound suppressor
US7931118B1 (en) * 2009-04-30 2011-04-26 Peter Cronhelm Baffle for sound suppression
US8167084B1 (en) 2010-03-01 2012-05-01 Fn Manufacturing, Llc Sound suppressor
US20120152649A1 (en) * 2010-12-21 2012-06-21 Larue Mark C Suppressor for attachment to firearm barrel
RU2458308C1 (ru) * 2011-01-24 2012-08-10 Открытое акционерное общество "Завод им. В.А. Дегтярева" Дульное устройство
US8424441B2 (en) 2009-08-20 2013-04-23 Advanced Armament Corp. Firearm suppressor booster system
AU2009201323B2 (en) * 2008-04-03 2013-09-12 John William Bladen Sound suppressors for firearms
US8579075B2 (en) * 2008-03-13 2013-11-12 Advanced Armament Corp., Llc Blackout silencer
US8695475B2 (en) * 2010-05-06 2014-04-15 Rheinmetall Waffe Munition Gmbh Signature-reduced muzzle brake
US8739922B2 (en) * 2011-06-14 2014-06-03 Tachtical Solutions, LLC One-piece sleeve for firearm noise suppressor
US8807272B2 (en) 2010-10-05 2014-08-19 John William Bladen Sound suppressor for firearms
US8939057B1 (en) * 2013-09-12 2015-01-27 Richard A. Edsall Firearm suppressor
US9046316B1 (en) * 2014-02-04 2015-06-02 Gemini Technologies Firearm suppressor with dynamic baffles
US9103618B2 (en) 2013-01-09 2015-08-11 Daniel Defense, Inc. Suppressor assembly for a firearm
US20150260473A1 (en) * 2013-12-10 2015-09-17 Anthony Barney Firearm Suppressor
US9194640B2 (en) 2011-06-14 2015-11-24 Tactical Solutions Llc One-piece sleeve with alternative slot(s) for firearm noise suppressor
WO2016007467A3 (en) * 2014-07-07 2016-03-03 Tonkin Eric T Weapon barrel having integrated suppressor
US9347727B1 (en) * 2014-04-29 2016-05-24 The United States Of America As Represented By The Secretary Of The Army Automatic weapon suppressor
US9395136B1 (en) 2015-01-16 2016-07-19 KD&E Dynamics Flexible monocore baffle apparatus and related methods
US9541345B2 (en) 2014-03-18 2017-01-10 Steven H. Schwartzkopf Recoil and muzzle blast controller for firearms
WO2017200511A1 (en) * 2016-05-16 2017-11-23 Tkachov Sergiy Vasyliyovych A silencer for small-arms sound suppression
US9835400B2 (en) 2014-12-26 2017-12-05 Sturm, Ruger & Company, Inc. Integrally suppressed barrel for firearm
US9857137B2 (en) 2014-12-26 2018-01-02 Sturm, Ruger & Company Silencer for firearm
USD808490S1 (en) 2016-04-15 2018-01-23 Vista Outdoor Operations Llc Suppressor
US9921020B2 (en) * 2016-06-06 2018-03-20 Gsl Technology, Inc. Sound suppressor with replaceable components
US20180313628A1 (en) * 2017-04-26 2018-11-01 Nicholas Randolph Tomczak Baffle for a firearm suppressor
US10215543B1 (en) * 2012-05-10 2019-02-26 Mark Benson Linear explosive disruptor
US20190063860A1 (en) * 2017-08-22 2019-02-28 Incodema3D, LLC Sound suppressor for a firearm
US10480888B2 (en) 2014-12-26 2019-11-19 Sturm, Ruger & Company, Inc. Silencer for firearm
US11585623B2 (en) 2020-07-16 2023-02-21 Michael Borunsky Firearm suppressor baffles and related multi-baffle configurations for increased sound and flash suppression
WO2023115168A1 (en) * 2021-12-24 2023-06-29 Wedge Tail Industries R & D Pty Ltd Firearm suppressor
WO2023150311A3 (en) * 2022-02-03 2023-09-14 Blast Analytics And Mitigation, Inc. Filtered barrel accessories for mitigation of environmental pollutants and physical hazards during weapons systems use

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0166802A1 (de) * 1984-07-04 1986-01-08 Charles Albert Finn Schalldämpfer für Feuerwaffen
DE3735358A1 (de) * 1987-10-19 1989-05-03 Evitec Entwicklung Vertrieb Schalldaempfer fuer feuerwaffen
US5679916A (en) * 1992-09-17 1997-10-21 Heckler & Koch Gmbh Gun silencer
DE4231183C1 (de) * 1992-09-17 1994-03-31 Heckler & Koch Gmbh Schalldämpfer für Feuerwaffen
DE4410625C2 (de) * 1994-03-26 1997-07-03 Rheinmetall Ind Ag Schalldämpfer für Waffen
DE4410624C2 (de) * 1994-03-26 1997-12-11 Rheinmetall Ind Ag Schalldämpfer für Waffen
DE102022124620B3 (de) 2022-09-26 2023-09-14 Carl Walther Gesellschaft mit beschränkter Haftung Schalldämpfer-Vorrichtung mit einsetzbarem Trocknungskörper

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291610A (en) * 1977-12-05 1981-09-29 Shimon Waiser Silencer for firearms
US4584924A (en) * 1981-11-03 1986-04-29 Mitsuo Taguchi Silencer for firearms
US4588043A (en) * 1983-03-28 1986-05-13 Finn Charles A Sound suppressor for a firearm
US4530417A (en) * 1983-06-22 1985-07-23 Sw Daniel, Inc. Suppressor
US4576083A (en) * 1983-12-05 1986-03-18 Seberger Jr Oswald P Device for silencing firearms
US4907488A (en) * 1988-03-29 1990-03-13 Seberger Oswald P Device for silencing firearms and cannon
US5029512A (en) * 1990-04-16 1991-07-09 Latka Gregory S Firearm muzzle silencer
US6796214B2 (en) * 2000-02-15 2004-09-28 Hans Petter Hausken Firearm silencer
US6374718B1 (en) * 2000-07-14 2002-04-23 Tactical Operations Inc. Silencer for shotguns and a method of making the same
US20040173403A1 (en) * 2003-03-08 2004-09-09 Shafer Gordon Scott Suppressor for a paintball marker
US6848538B2 (en) * 2003-03-08 2005-02-01 Gordon Scott Shafer Suppressor for a paintball marker
US7237467B1 (en) * 2004-04-28 2007-07-03 Douglas M. Melton Sound suppressor
US7308967B1 (en) * 2005-11-21 2007-12-18 Gemini Technologies, Inc. Sound suppressor
US8579075B2 (en) * 2008-03-13 2013-11-12 Advanced Armament Corp., Llc Blackout silencer
AU2009201323B2 (en) * 2008-04-03 2013-09-12 John William Bladen Sound suppressors for firearms
US7931118B1 (en) * 2009-04-30 2011-04-26 Peter Cronhelm Baffle for sound suppression
US8424441B2 (en) 2009-08-20 2013-04-23 Advanced Armament Corp. Firearm suppressor booster system
US8167084B1 (en) 2010-03-01 2012-05-01 Fn Manufacturing, Llc Sound suppressor
US8695475B2 (en) * 2010-05-06 2014-04-15 Rheinmetall Waffe Munition Gmbh Signature-reduced muzzle brake
US8807272B2 (en) 2010-10-05 2014-08-19 John William Bladen Sound suppressor for firearms
US8511425B2 (en) * 2010-12-21 2013-08-20 Mark C. LaRue Suppressor for attachment to firearm barrel
US20120152649A1 (en) * 2010-12-21 2012-06-21 Larue Mark C Suppressor for attachment to firearm barrel
RU2458308C1 (ru) * 2011-01-24 2012-08-10 Открытое акционерное общество "Завод им. В.А. Дегтярева" Дульное устройство
US8739922B2 (en) * 2011-06-14 2014-06-03 Tachtical Solutions, LLC One-piece sleeve for firearm noise suppressor
US9194640B2 (en) 2011-06-14 2015-11-24 Tactical Solutions Llc One-piece sleeve with alternative slot(s) for firearm noise suppressor
US10215543B1 (en) * 2012-05-10 2019-02-26 Mark Benson Linear explosive disruptor
US9103618B2 (en) 2013-01-09 2015-08-11 Daniel Defense, Inc. Suppressor assembly for a firearm
US9261317B2 (en) 2013-01-09 2016-02-16 Daniel Defense, Inc. Suppressor assembly for a firearm
US8939057B1 (en) * 2013-09-12 2015-01-27 Richard A. Edsall Firearm suppressor
US20150260473A1 (en) * 2013-12-10 2015-09-17 Anthony Barney Firearm Suppressor
US9482484B2 (en) * 2013-12-10 2016-11-01 Anthony Barney Firearm suppressor
US9046316B1 (en) * 2014-02-04 2015-06-02 Gemini Technologies Firearm suppressor with dynamic baffles
US9541345B2 (en) 2014-03-18 2017-01-10 Steven H. Schwartzkopf Recoil and muzzle blast controller for firearms
US9347727B1 (en) * 2014-04-29 2016-05-24 The United States Of America As Represented By The Secretary Of The Army Automatic weapon suppressor
WO2016007467A3 (en) * 2014-07-07 2016-03-03 Tonkin Eric T Weapon barrel having integrated suppressor
US10480888B2 (en) 2014-12-26 2019-11-19 Sturm, Ruger & Company, Inc. Silencer for firearm
US9857137B2 (en) 2014-12-26 2018-01-02 Sturm, Ruger & Company Silencer for firearm
US9835400B2 (en) 2014-12-26 2017-12-05 Sturm, Ruger & Company, Inc. Integrally suppressed barrel for firearm
US10401112B2 (en) 2014-12-26 2019-09-03 Sturm, Ruger & Company, Inc. Silencer for firearm
US9395136B1 (en) 2015-01-16 2016-07-19 KD&E Dynamics Flexible monocore baffle apparatus and related methods
USD808490S1 (en) 2016-04-15 2018-01-23 Vista Outdoor Operations Llc Suppressor
WO2017200511A1 (en) * 2016-05-16 2017-11-23 Tkachov Sergiy Vasyliyovych A silencer for small-arms sound suppression
US9921020B2 (en) * 2016-06-06 2018-03-20 Gsl Technology, Inc. Sound suppressor with replaceable components
US20180313628A1 (en) * 2017-04-26 2018-11-01 Nicholas Randolph Tomczak Baffle for a firearm suppressor
US20190063860A1 (en) * 2017-08-22 2019-02-28 Incodema3D, LLC Sound suppressor for a firearm
US10907920B2 (en) * 2017-08-22 2021-02-02 Incodema3D, LLC Sound suppressor for a firearm
US11835314B2 (en) 2017-08-22 2023-12-05 Incodema3D, LLC Sound suppressor for a firearm
US11585623B2 (en) 2020-07-16 2023-02-21 Michael Borunsky Firearm suppressor baffles and related multi-baffle configurations for increased sound and flash suppression
WO2023115168A1 (en) * 2021-12-24 2023-06-29 Wedge Tail Industries R & D Pty Ltd Firearm suppressor
WO2023150311A3 (en) * 2022-02-03 2023-09-14 Blast Analytics And Mitigation, Inc. Filtered barrel accessories for mitigation of environmental pollutants and physical hazards during weapons systems use

Also Published As

Publication number Publication date
CH539833A (de) 1973-07-31
IL39592A0 (en) 1972-08-30
ES403470A1 (es) 1975-05-01
DE2127877A1 (de) 1972-12-28
IT956125B (it) 1973-10-10
FR2141782A1 (de) 1973-01-26
FR2141782B1 (de) 1973-07-13
BE784346A (fr) 1972-10-02

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