US2973694A - Buffer for automatic firearms - Google Patents

Buffer for automatic firearms Download PDF

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Publication number
US2973694A
US2973694A US712814A US71281458A US2973694A US 2973694 A US2973694 A US 2973694A US 712814 A US712814 A US 712814A US 71281458 A US71281458 A US 71281458A US 2973694 A US2973694 A US 2973694A
Authority
US
United States
Prior art keywords
reservoir
main reservoir
liquid
buffer
compensating
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
US712814A
Other languages
English (en)
Inventor
Herlach Friedrich
Linder Friedrich
Spalding Wilhelm
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Application granted granted Critical
Publication of US2973694A publication Critical patent/US2973694A/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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/78—Bolt buffer or recuperator means
    • F41A3/90—Fluid buffers
    • 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
    • F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/02—Fluid-operated systems

Definitions

  • the present invention relates to liquid spring buffers for automatic fire arms and has the following main objects:
  • the drawing is a longitudinal section of a liquid spring with associated compensating reservoir.
  • the main reservoir 1 and the compensating reservoir 2 are accommodatedin a common casing, and are separated by a partition Wall a.
  • the plunger 5, the piston rod 6 of which projects from the casing, is exposed at any time to an impact and is guided in a bore 3 of the main reservoir.
  • the main reservoir 1 is in communication with the compensating reservoir 2 through a bore 7 and a non-return valve 13 in the partition wall 4 of the casing.
  • the bore 7 widens in the direction of the main reservoir to a valve seat 11 of the relief valve 13.
  • the valved body 8 which belongs also to the non-return valve 13 is arranged between the valve seat 11 and the main reservoir.
  • a container 9 is attached which is expansible mainly in its longitudinal direction and which is sealed in a gas-tight manner.
  • This container consists of a corrugated tube, i.e. a metal bellows having corrugated resilient side-walls, and is filled through a non-return valve with a highly compressed gas, for example compressed air.
  • the main reservoir 1 as well as the space of the compensating reservoir 2 surrounding the gas container 9 contains a resilient liquid, for example a liquid silicone, which owing to its comparatively high compressibility can take in a large amount of energy.
  • any other suitable expansible pressure container may be used.
  • the non-return valve 13 prevents on one hand the supply of resilient liquid from the main reservoir to the compensating reservoir and facilitates on the other hand the supply in the opposite direction.
  • the pressure pulses occurring in the main reservoir during the cushioning can propagate themselves through a'non-return valve 13 not at all into the compensating reservoir 2.
  • the non-return valve 13 protects the compensating reservoir and the parts which 2,973,694 Patented Mar. 7, 1961 are present therein from extremely high pressures.
  • the pressure gas container 9 expands a corresponding volume difference, and thereby forces liquid from the compensating reservoir into the main reservoir until the pressure in these two reservoirs 1 and 2 is equalised.
  • a contraction of and pressure drop occurring in the liquid owing to cooling down is compensated for to a practicallysufiicient extent by the expansion of the pressure gas container 9, which is accompanied by a comparatively small Pressure drop of its content.
  • a liquid resilient buffer for an automatic fire-arm comprising in combination, a main reservoir containing a resilient liquid under pressure, a plunger movable axially in said main reservoir and fixedly connected to a piston rod extending from said main reservoir, a compensating reservoir also containing a resilient liquid, valve means connecting said two reservoirs, said valve means comprising a valve seat and a valve body, said valve body being situated between said valve seat and said main reservoir to prevent the flow of resilient liquid from said main reservoir to said compensating reservoir and to permit flow in the opposite direction and 'an expansible pressure container containing a compressed gas, to compensate any pressure loss of said resilient liquid in said main reservoir from said compensating reservoir.
  • a liquid resilient buffer for an automatic fire-arm comprising in combination, a main reservoir containing a liquid silicone under pressure, a plunger movable axially in said main reservoir and fixedly connected to a piston rod extending from said main reservoir, a compensating reservoir also containing liquid silicone, valve means connecting said two reservoirs, said valve means comprising a valve seat and a valve body, said valve body being situated between said valve seat and said main reservoir, to prevent the flow of said liquid silicone from said main reservoir to said compensating reservoir and to permit flow in the opposite direction and an expansible metal bellows having corrugated resilient side walls containing a compressed gas to compensate any pressure loss of said liquid silicone in said main reservoir from said compensating reservoir.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
US712814A 1957-02-08 1958-02-03 Buffer for automatic firearms Expired - Lifetime US2973694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH870657X 1957-02-08

Publications (1)

Publication Number Publication Date
US2973694A true US2973694A (en) 1961-03-07

Family

ID=4543999

Family Applications (1)

Application Number Title Priority Date Filing Date
US712814A Expired - Lifetime US2973694A (en) 1957-02-08 1958-02-03 Buffer for automatic firearms

Country Status (6)

Country Link
US (1) US2973694A (et)
BE (1) BE564363A (et)
CH (1) CH352257A (et)
FR (1) FR1191194A (et)
GB (1) GB870657A (et)
NL (2) NL224361A (et)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3116664A (en) * 1962-03-28 1964-01-07 Ralph F Hereth Closure apparatus for missile compartments and the like
US3121479A (en) * 1960-11-10 1964-02-18 Procedo G M B H Volume compensation devices for hydraulic-pneumatic telescopic shock absorbers
US3977296A (en) * 1974-12-04 1976-08-31 Colt Industries Operating Corporation (Firearms Division) Hydraulic buffer assembly for automatic or semiautomatic firearm
US4108046A (en) * 1975-06-06 1978-08-22 The United States Of America As Represented By The Secretary Of The Navy Liquid-gas constant force recoil spring
US5531150A (en) * 1994-03-14 1996-07-02 Lockheed Missiles & Space Company Lightweight gun systems
US5941005A (en) * 1998-07-25 1999-08-24 O.F. Mossberg & Sons, Inc. Safety and bolt assembly system for firearms
US5983549A (en) * 1998-07-24 1999-11-16 O. F. Mossberg & Sons, Inc. Inertial cycling system for firearms
US6619930B2 (en) 2001-01-11 2003-09-16 Mandus Group, Ltd. Method and apparatus for pressurizing gas
EP1811261A1 (de) * 2006-01-24 2007-07-25 Oerlikon Contraves Ag Gasfeder für eine Revolver- oder Verschlusskanone
US20160273873A1 (en) * 2015-03-19 2016-09-22 Kyntec Corporation Recoil Shock Absorber for Long Barrel Firearms
US10557674B1 (en) * 2018-10-11 2020-02-11 Dimitrios Mantas Buffer assembly for firearms
US12123674B1 (en) 2023-08-08 2024-10-22 Dimitrios Mantas External elastic skin-based recoil reduction mechanism for a firearm

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3465143D1 (en) * 1983-07-05 1987-09-03 Oerlikon Buehrle Ag Bolt buffer for automatic firearms
GB2186050B (en) * 1986-01-30 1989-10-25 Nhk Spring Co Ltd Car suspension system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR319617A (fr) * 1902-03-14 1902-11-18 Bourdelles Récupérateur à gaz à haute pression
DE735887C (de) * 1936-09-20 1943-05-31 Rheinmetall Borsig Ag Fluessigkeitsbremse
US2334708A (en) * 1942-03-23 1943-11-23 Joseph F Joy Hydropneumatic device
FR1132801A (fr) * 1954-10-16 1957-03-18 Brevets Aero Mecaniques Perfectionnements apportés aux installation d'artillerie comportant au moins une arme à feu, notamment une arme automatique, reculant à chaque coup par rapport à un appui contre l'action d'un système élastique
US2842356A (en) * 1955-04-14 1958-07-08 Wales Strippit Corp Liquid spring

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR319617A (fr) * 1902-03-14 1902-11-18 Bourdelles Récupérateur à gaz à haute pression
DE735887C (de) * 1936-09-20 1943-05-31 Rheinmetall Borsig Ag Fluessigkeitsbremse
US2334708A (en) * 1942-03-23 1943-11-23 Joseph F Joy Hydropneumatic device
FR1132801A (fr) * 1954-10-16 1957-03-18 Brevets Aero Mecaniques Perfectionnements apportés aux installation d'artillerie comportant au moins une arme à feu, notamment une arme automatique, reculant à chaque coup par rapport à un appui contre l'action d'un système élastique
US2842356A (en) * 1955-04-14 1958-07-08 Wales Strippit Corp Liquid spring

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121479A (en) * 1960-11-10 1964-02-18 Procedo G M B H Volume compensation devices for hydraulic-pneumatic telescopic shock absorbers
US3116664A (en) * 1962-03-28 1964-01-07 Ralph F Hereth Closure apparatus for missile compartments and the like
US3977296A (en) * 1974-12-04 1976-08-31 Colt Industries Operating Corporation (Firearms Division) Hydraulic buffer assembly for automatic or semiautomatic firearm
US4108046A (en) * 1975-06-06 1978-08-22 The United States Of America As Represented By The Secretary Of The Navy Liquid-gas constant force recoil spring
US5531150A (en) * 1994-03-14 1996-07-02 Lockheed Missiles & Space Company Lightweight gun systems
US5983549A (en) * 1998-07-24 1999-11-16 O. F. Mossberg & Sons, Inc. Inertial cycling system for firearms
US5941005A (en) * 1998-07-25 1999-08-24 O.F. Mossberg & Sons, Inc. Safety and bolt assembly system for firearms
US6619930B2 (en) 2001-01-11 2003-09-16 Mandus Group, Ltd. Method and apparatus for pressurizing gas
EP1811261A1 (de) * 2006-01-24 2007-07-25 Oerlikon Contraves Ag Gasfeder für eine Revolver- oder Verschlusskanone
US20070169617A1 (en) * 2006-01-24 2007-07-26 Marcos Trigo Gas spring for a revolver cannon or breech cannon
US7938054B2 (en) 2006-01-24 2011-05-10 Rheinmetall Air Defence Ag Gas spring for a revolver cannon or breech cannon
US20160273873A1 (en) * 2015-03-19 2016-09-22 Kyntec Corporation Recoil Shock Absorber for Long Barrel Firearms
US9752848B2 (en) * 2015-03-19 2017-09-05 Kyntec Corporation Recoil shock absorber for long barrel firearms
US9810508B2 (en) 2015-03-19 2017-11-07 Kyntec Corporation Recoil shock absorber for long barrel firearms
US10557674B1 (en) * 2018-10-11 2020-02-11 Dimitrios Mantas Buffer assembly for firearms
US12123674B1 (en) 2023-08-08 2024-10-22 Dimitrios Mantas External elastic skin-based recoil reduction mechanism for a firearm

Also Published As

Publication number Publication date
CH352257A (de) 1961-02-15
NL112544C (et)
BE564363A (et)
FR1191194A (fr) 1959-10-16
GB870657A (en) 1961-06-14
NL224361A (et)

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