Fluid Patents (Class 89/43.01)
  • Patent number: 9746269
    Abstract: One embodiment of a gun configured with the soft recoil system comprises a plurality of recoiling parts that initially moves in the direction of the projectile being fired before moving in a direction opposite to that of a projectile during the firing of the round. The soft recoil system throttles the movement of the recoiling parts such that the energy expended during the firing of the round is spread over a longer time period and a longer distance than would normally occur. The soft recoil system stores at least a portion of the energy transferred to the recoiling parts and the user may selectively release at least a part of that portion of energy to offset the energy imparted to the gun during the firing of the next round.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: August 29, 2017
    Assignee: Mandus Group, Ltd.
    Inventors: Kenneth Wynes, Gary Bowrey
  • Patent number: 9739294
    Abstract: A vented pressurized gas-powered actuator includes a housing having a central longitudinal axis and an inner surface. The inner surface has a constant radius between first and second planes extending perpendicular to the axis. At least one vent groove extends from the inner surface in a direction away from the axis. The at least one groove has a first end intersecting the first plane.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: August 22, 2017
    Assignee: TK Holdings Inc.
    Inventors: Larry Wilmot, Rachid Hammoud
  • Patent number: 9562551
    Abstract: A locking device for mechanical pieces, particularly for pieces subjected to mechanical processing or similar, comprising at least one hollow body that forms a sliding seat, a movable stem that is accommodated slidingly partially within the sliding seat of the hollow body and radial expansion elements which are interposed between the hollow body and the movable stem, the radial expansion elements being adapted to mutually lock the hollow body and the movable stem, the movable stem protruding partially from the hollow body with the hollow body and the movable stem jointly associable, at their free ends, by way of elements for connection, respectively, to a mechanical piece to be processed or a fixed part of a machine with which the mechanical piece is to be processed.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: February 7, 2017
    Assignee: FCS SYSTEM SRL
    Inventor: Almerino Canuto
  • Patent number: 8863636
    Abstract: Disclosed are a soft recoil system and a cannon having the same. The soft recoil system includes: a cannon barrel returning device mounted to a recoil device for absorbing a recoil force occurring when ammunition is fired, and configured to backward press a breech ring, such that the cannon barrel is fixed to a preset position; a cannon barrel fixing device installed at the recoil device, and configured to fix the cannon barrel when the cannon barrel returns to the fixed position; and a forward momentum generator connected to the recoil device and the breech ring, respectively, configured to forward move the cannon barrel by applying a force to the breech ring, such that the ammunition is fired while the cannon barrel forward moves, and configured to reduce a recoil force by partially attenuating recoil momentum resulting from the firing of the ammunition, by forward momentum.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: October 21, 2014
    Assignee: Agency for Defense Development
    Inventors: Sang-Tae Ahn, Kuk-Jeong Kang, Chang-Ki Cho, Sang-Bae Jun
  • Patent number: 8857312
    Abstract: In some embodiments, an adapter for attaching a handheld firearm to an unmanned air vehicle comprises a mounting assembly configured for attachment to said firearm and to the unmanned air vehicle, and an actuation assembly comprising an actuation device configured to actuate a trigger of the handheld firearm.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: October 14, 2014
    Assignee: Alliant Techsystems Inc.
    Inventors: Kent C. Nelson, Kenneth Nash, Dennis C. Philpot
  • Publication number: 20130247749
    Abstract: One embodiment of a gun configured with the soft recoil system comprises a plurality of recoiling parts that initially moves in the direction of the projectile being fired before moving in a direction opposite to that of a projectile during the firing of the round. The soft recoil system throttles the movement of the recoiling parts such that the energy expended during the firing of the round is spread over a longer time period and a longer distance than would normally occur. The soft recoil system stores at least a portion of the energy transferred to the recoiling parts and the user may selectively release at least a part of that portion of energy to offset the energy imparted to the gun during the firing of the next round.
    Type: Application
    Filed: May 28, 2013
    Publication date: September 26, 2013
    Inventors: Kenneth Wynes, Gary Bowrey
  • Patent number: 8468928
    Abstract: One embodiment of a gun configured with the soft recoil system comprises a plurality of recoiling parts that initially moves in the direction of the projectile being fired before moving in a direction opposite to that of a projectile during the firing of the round. The soft recoil system throttles the movement of the recoiling parts such that the energy expended during the firing of the round is spread over a longer time period and a longer distance than would normally occur. The soft recoil system stores at least a portion of the energy transferred to the recoiling parts and the user may selectively release at least a part of that portion of energy to offset the energy imparted to the gun during the firing of the next round.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: June 25, 2013
    Assignee: Mandus Group Ltd
    Inventors: Kenneth Wynes, Gary Bowrey
  • Patent number: 8297172
    Abstract: In some embodiments, an adapter for attaching a handheld firearm to an unmanned air vehicle comprises a mounting assembly configured for attachment to said firearm and to the unmanned air vehicle, and an actuation assembly comprising an actuation device configured to actuate a trigger of the handheld firearm.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: October 30, 2012
    Assignee: Alliant Techsystems Inc.
    Inventors: Kent C. Nelson, Kenneth Nash, Dennis C. Philpot
  • Publication number: 20120266747
    Abstract: One embodiment of a gun configured with the soft recoil system comprises a plurality of recoiling parts that initially moves in the direction of the projectile being fired before moving in a direction opposite to that of a projectile during the firing of the round. The soft recoil system throttles the movement of the recoiling parts such that the energy expended during the firing of the round is spread over a longer time period and a longer distance than would normally occur. The soft recoil system stores at least a portion of the energy transferred to the recoiling parts and the user may selectively release at least a part of that portion of energy to offset the energy imparted to the gun during the firing of the next round.
    Type: Application
    Filed: April 20, 2012
    Publication date: October 25, 2012
    Inventors: Kenneth Wynes, Gary Bowrey
  • Patent number: 8281703
    Abstract: Recoil mitigating devices and methods for use with projectile firing systems such as a disrupter mounted to a robotic arm. A pair of parallel spring provides dampening of axial recoil movement of the disrupter relative to the robotic arm. Forward ends of the springs are attachable to the barrel of the disrupter while rearward portions of the springs are attachable to the robotic arm by a robot mount block. The robot mount block at least partially encloses the barrel of the disrupter in connecting the parallel springs and permits axial movement of the disrupter along or through the mount during firing.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: October 9, 2012
    Assignee: iRobot Corporation
    Inventor: Grinnell Moore
  • Patent number: 8276501
    Abstract: A recoil dissipation apparatus may include a linear roller rail and a roller block that is translatable on the linear roller rail with only one degree of freedom. A gear rack may be located adjacent the linear roller rail. A barrel clamp may be fixed to the roller block. A pinion gear may engage the gear rack. The pinion gear may be fixed on a shaft. The shaft may have a rotary viscous damper fixed at one end. The recoil force from a barrel fixed in the barrel clamp may cause translation of the roller block and dissipation of the recoil force by the rotary viscous damper.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: October 2, 2012
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventor: John C. Sukurlu
  • Publication number: 20120210864
    Abstract: Recoil mitigating devices and methods for use with projectile firing systems such as a disrupter mounted to a robotic arm. A pair of parallel spring provides dampening of axial recoil movement of the disrupter relative to the robotic arm. Forward ends of the springs are attachable to the barrel of the disrupter while rearward portions of the springs are attachable to the robotic arm by a robot mount block. The robot mount block at least partially encloses the barrel of the disrupter in connecting the parallel springs and permits axial movement of the disrupter along or through the mount during firing.
    Type: Application
    Filed: December 22, 2011
    Publication date: August 23, 2012
    Inventor: Grinnell More
  • Patent number: 8215224
    Abstract: A recoil brake includes a control rod disposed in a central opening in a piston and cylinder assembly. A fluid passage leads from the piston to the control rod. A long stroke body is fixed to the piston and defines a long stroke orifice around the control rod. A short stroke body is removably disposed in the long stroke orifice. The short stroke body defines a short stroke orifice around the control rod, the short stroke orifice being smaller than the long stroke orifice. The recoil brake may be used with a 120 mm gun.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: July 10, 2012
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Richard W. Tortorici, Jr., Ronald Gast, Edward Hyland, Richard W. Tortorici, III
  • Patent number: 8161863
    Abstract: A recoil-actuated gun scavenger for a gun having a bore, a breech, a recoiling mass, and a non-recoiling mass. The scavenger may include a pneumatic cylinder and a piston translatable therein. A rod may be fixed to the piston. The cylinder and rod may be fixed to respective recoiling and non-recoiling masses, or vice versa. The cylinder may include intake and exhaust ports with check valves, on both sides of the piston. The exhaust ports may communicate with an accumulator. The accumulator may discharge compressed air to jets located at the open breech end of the gun.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: April 24, 2012
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Jeffrey W. Haas
  • Patent number: 8082836
    Abstract: Recoil mitigating devices and methods for use with projectile firing systems such as a disrupter mounted to a robotic arm. A pair of parallel spring provides dampening of axial recoil movement of the disrupter relative to the robotic arm. Forward ends of the springs are attachable to the barrel of the disrupter while rearward portions of the springs are attachable to the robotic arm by a robot mount block. The robot mount block at least partially encloses the barrel of the disrupter in connecting the parallel springs and permits axial movement of the disrupter along or through the mount during firing.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: December 27, 2011
    Assignee: iRobot Corporation
    Inventor: Grinnell More
  • Patent number: 8061259
    Abstract: A light weight field howitzer includes a barrel which is supported by a cradle constructed from hollow members and which is pivotally mounted about a trunnion bearing secured to a chassis. The trunnion bearing lies on the barrel axis and is positioned beyond the limit of maximum recoil of the barrel. Front stabilisers and rear trail support legs are provided to spread the load of the howitzer and spades are rigidly secured to the chassis. The howitzer includes a single hydraulic accumulator arrangement constituting a combined recoil buffer and recuperator system. A barrel elevating means is provided comprising a geared manual means assisted by a precompressed gas system.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 22, 2011
    Assignee: BAE SYSTEMS plc
    Inventors: Harold Leslie Searle, David Andrew Eaglestone, James Bone
  • Patent number: 8056464
    Abstract: The invention relates to firing brake assembly for weapons of the type incorporating an actual firing brake and means to modulate the function of said firing brake wherein the modulating means are in the form of a chamber equipped with a piston delimiting an upstream chamber and a downstream chamber, the upstream chamber communicating with the gun barrel by means of an upstream circuit ensuring that part of the combustion gases are taken up and a downstream chamber filled with a fluid and communicating with the firing brake by means of a downstream circuit.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: November 15, 2011
    Assignee: Nexter Systems
    Inventors: Jean-Francois Cazalieres, Francois-Xavier Renard
  • Publication number: 20110197748
    Abstract: A gun mount for use in sighting-in long guns having or not having a large bottom feed, clip magazine, belt, drum or other bottom loaded ammunition feed system includes a base to be mounted on a table top or other suitable surface and that supports a rotatably mounted gun holder on which a long gun is placed. The gun holder allows the gun barrel to be adjustably fixed in each of a horizontal and vertical position. An aligned sight picture is set into the gun sights and is maintained or reset after the gun is fired by shock absorbers that keep recoil shock from changing the sight settings, or return the gun to the position at which the sights have been set.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 18, 2011
    Inventors: Kent S. Roberts, Brent Roberts
  • Publication number: 20110168007
    Abstract: A device for delaying a recoil action of a recoil system of a weapon intended to fire projectiles out from a barrel. The device includes a housing removably mountable onto the recoil system, a rod being movable along opposite first and second directions in response to a corresponding movement of the piston end of the recoil system, and a damping assembly contained in the housing and cooperating with a distal extremity of the rod. When in use, the damping assembly provides a damping effect to the distal extremity when the rod is moved along the first direction, the damping effect being configured so that the recoil action of the recoil system is delayed by a time corresponding substantially to a time of travel of a projectile inside the barrel of the weapon before being fired out of said barrel, for improving firing accuracy and other parameters of the weapon.
    Type: Application
    Filed: March 29, 2010
    Publication date: July 14, 2011
    Inventor: Antoni Binek
  • Patent number: 7971517
    Abstract: A gun comprising: a generally tubular barrel defining a barrel axis and having an external barrel surface about the perimeter of the tubular barrel a cradle having a cradle bore for accommodating a section of the barrel wherein the barrel is slidably mounted in the cradle bore such that the barrel can move relative to the cradle along the barrel axis across a range of barrel positions and wherein an interface defined by the slidable contact between external barrel surface and the cradle bore—i) prevents rotation of the barrel relative to the cradle about the barrel axis; and ii) is maintained at a single section of the cradle over the entire range of barrel positions.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: July 5, 2011
    Assignee: BAE Systems plc
    Inventors: David Andrew Eagleston, Stephen Wildgoose
  • Publication number: 20110083550
    Abstract: Recoil mitigating devices and methods for use with projectile firing systems such as a disrupter mounted to a robotic arm. A pair of parallel spring provides dampening of axial recoil movement of the disrupter relative to the robotic arm. Forward ends of the springs are attachable to the barrel of the disrupter while rearward portions of the springs are attachable to the robotic arm by a robot mount block. The robot mount block at least partially encloses the barrel of the disrupter in connecting the parallel springs and permits axial movement of the disrupter along or through the mount during firing.
    Type: Application
    Filed: December 16, 2010
    Publication date: April 14, 2011
    Inventor: Grinnell More
  • Patent number: 7878105
    Abstract: Recoil mitigating devices and methods for use with projectile firing systems such as a disrupter mounted to a robotic arm. A pair of parallel spring provides dampening of axial recoil movement of the disrupter relative to the robotic arm. Forward ends of the springs are attachable to the barrel of the disrupter while rearward portions of the springs are attachable to the robotic arm by a robot mount block. The robot mount block at least partially encloses the barrel of the disrupter in connecting the parallel springs and permits axial movement of the disrupter along or through the mount during firing.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: February 1, 2011
    Inventor: Grinnell More
  • Publication number: 20110000363
    Abstract: Recoil mitigating devices and methods for use with projectile firing systems such as a disrupter mounted to a robotic arm. A pair of parallel spring provides dampening of axial recoil movement of the disrupter relative to the robotic arm. Forward ends of the springs are attachable to the barrel of the disrupter while rearward portions of the springs are attachable to the robotic arm by a robot mount block. The robot mount block at least partially encloses the barrel of the disrupter in connecting the parallel springs and permits axial movement of the disrupter along or through the mount during firing.
    Type: Application
    Filed: April 2, 2008
    Publication date: January 6, 2011
    Applicants: More Industries, LLC, iRobot Corporation
    Inventor: Grinnell More
  • Patent number: 7856916
    Abstract: Recoil artillery systems and isolation systems are provided. An isolation system is provided for mounting an inertial navigation system onto an artillery system having a barrel adapted to move along a longitudinal axis during a firing sequence. The system includes an inner cradle, an outer cradle, first and second elastomeric isolators, and a first single axis damper. The first elastomeric isolator is mounted between the inner and outer cradles. The second elastomeric isolator is mounted between the inner and outer cradles. The first single axis damper is aligned substantially parallel with the longitudinal axis and includes a first end and a second end, the first end is mounted to the first inner sidewall, and the second end is mounted to the first outer sidewall.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: December 28, 2010
    Assignee: Honeywell International Inc.
    Inventor: Robert B. Anderson
  • Publication number: 20100288118
    Abstract: The invention relates to firing brake assembly for weapons of the type incorporating an actual firing brake and means to modulate the function of said firing brake wherein the modulating means are in the form of a chamber equipped with a piston delimiting an upstream chamber and a downstream chamber, the upstream chamber communicating with the gun barrel by means of an upstream circuit ensuring that part of the combustion gases are taken up and a downstream chamber filled with a fluid and communicating with the firing brake by means of a downstream circuit.
    Type: Application
    Filed: May 11, 2010
    Publication date: November 18, 2010
    Applicant: NEXTER SYSTEMS
    Inventors: Jean-Francois Cazalieres, Francois-Xavier Renard
  • Publication number: 20090126558
    Abstract: The invention relates to a hydropneumatic braking and return system for barrel-recoil guns having at least one working cylinder (1) which can be arranged between the gun barrel (6) of the gun and that mass (7) of the gun which does not recoil, contains a brake fluid (4) and has displaceable working pistons (3) which are arranged on a piston rod (2). In order to obtain a braking and return system of simple construction for barrel-recoil guns, with which it is simply possible, moreover, to take changes in different shooting parameters into consideration, the invention proposes to replace the braking cylinder of known systems with a simple working cylinder (1) having a working piston (3), wherein the working cylinder (1) is connected to a hydraulic accumulator (9) via a separate controllable pressure relief valve (10), wherein the pressure relief valve (10) can preferably be actuated in such a way that a substantially constant brake-force profile results during the recoil of the corresponding gun barrel (6).
    Type: Application
    Filed: March 9, 2007
    Publication date: May 21, 2009
    Inventor: Norbert Kohnen
  • Patent number: 7481146
    Abstract: A device for disrupting improvised explosive devices (IEDs) with a projectile, which serves to penetrate and/or destroy at least part of the IED. In addition, an accelerator is provided, which accelerates the projectile when the device is actuated and propels it through a barrel. The accelerator is a cartridge filled with propellant. The cartridge is stored in a magazine and contains an initiator for initiating the acceleration. A primer, which is located at the base of the cartridge, serves as the initiator. Initiation occurs when the primer is struck by a firing pin.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: January 27, 2009
    Inventor: Peter Weiss
  • Patent number: 7258056
    Abstract: A device to recuperate the energy produced during the recoiling of a weapon provided with a hydraulic fluid power circuit, wherein said device comprises an energy recuperating cylinder activated by the recoil of said weapon, a double-acting cylinder comprising two chambers separated by a piston, a first chamber of said cylinder being connected to said hydraulic power circuit of said weapon, said piston of said cylinder pushing said hydraulic fluid in said circuit into a storage accumulator when said weapon recoils. The energy recuperating cylinder comprises a second chamber connected to a recoil mechanism that ensures pressurising of said mechanism.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: August 21, 2007
    Assignee: Giat Industries
    Inventors: Dominique Guesnet, Alain Charton
  • Patent number: 7159505
    Abstract: A hydraulic breech mechanism uses a sealed reservoir of fluid to rigidly support the bolt 6 against barrel 2 resisting pressure generated by discharging a cartridge in chamber 3. Recoil forces cause the high pressure cylinder 7 and barrel assembly 2 and 4 to move relative to the sleeve valve 8 opening communication between reservoirs 9 and 11. This and subsequent bolt travel displace floating piston 12 compressing spring 13. During bolt opening any cartridge in chamber 3 will be ejected. With the firing load removed from the bolt 6 the floating piston 12 under influence of spring 13 will pump fluid into the high pressure reservoir 9, closing the bolt and chambering any round in the loading port. Continued load from spring 13 now returns the high pressure cylinder 7 and barrel assembly 2 and 4 to the original position relative to the sleeve valve locking bolt 6 ready for the next cycle.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: January 9, 2007
    Inventor: Simon Trendall
  • Patent number: 6912945
    Abstract: A recoil buffering apparatus for use with an artillery gun of the type comprising a breech assembly (15) connected to a barrel (12), the breech assembly (15) having a firing mechanism for firing a projectile through an open end of the barrel (12). The recoil buffering apparatus comprises a recoil buffering means adapted to be fixed to the barrel (12) and movable therewith during recoil action of the barrel (12) caused by firing of the projectile, and a support means associated with the recoil buffering means for supporting the recoil buffering means and thereby supporting the barrel (12) and breech assembly (15) through the recoil buffering means. An elevating apparatus and a traversing apparatus for an artillery gun are also described. The artillery gun can also be provided with a muzzle brake (11).
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: July 5, 2005
    Assignee: Ordnance Development and Engineering Company of Singapore (1996) PTE Ltd.
    Inventor: Teoh Hwa Ang
  • Patent number: 6782791
    Abstract: The gun may have a receiver element with a barrel extending forwardly from the receiver element with the barrel having a chamber end and a discharge end. A handle element may be attached to the receiver element and a trigger assembly may be integrated with the handle element. The receiver element may have a bolt carrier chamber formed therein and a bolt carrier assembly slidably disposed in the bolt carrier chamber. The bolt carrier chamber at a rearward portion thereof and the bolt carrier assembly may define a gas chamber. A bolt assembly may be slidably disposed in the bolt carrier assembly. An actuator may be slidably engaged with the receiver element and may be engageable with the bolt carrier assembly and the bolt assembly. A firing pin assembly may be slidably disposed in said bolt assembly and may have a firing assembly in communication with said trigger assembly.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: August 31, 2004
    Inventor: Kim Ira Moore
  • Patent number: 6694856
    Abstract: Disclosed is a high-speed, high-force impulse load damper susceptible to adaptive control including a cylinder, a piston defining in the cylinder a volume, a coil, fixed relative to the cylinder, configured to generate a magnetic field, and a fluid channel, configured to be influenced by the magnetic field, for one or both of providing fluid to and evacuating fluid from the volume. Also disclosed is a damper including a cylinder, a piston defining in said cylinder a first volume and a second volume, a first fluid channel for one or both of providing fluid to and evacuating fluid from the first volume, first means for regulating flow through said first fluid channel, a second fluid channel for one or both of providing fluid to and evacuating fluid from the second volume, and second means for regulating flow through said second fluid channel, wherein said first fluid channel and said second fluid channel are in fluid communication.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: February 24, 2004
    Assignees: The University of Maryland, Systems Planning and Analysis
    Inventors: Peter C. Chen, Norman Wereley
  • Patent number: 6622610
    Abstract: The closure of a blowback operated weapon is augmented by a gas cylinder and piston. The piston is self centering.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: September 23, 2003
    Assignee: KG Industries, Inc.
    Inventor: John Adkins
  • Patent number: 6408731
    Abstract: The disrupter (16) includes an elongated hollow barrel (18) having a cylindrical inner chamber (20), a closed rear (26) end and an opened front end (22), the latter closed with a front frangible seal (38). A channel member (46) partly surrounds an intermediate portion of the barrel, and is securely attached thereto. A pair of recoil channels (76, 78) extend from the barrel inner chamber, radially outwardly and rearwardly through the barrel and the channel member, and are linked to rearwardly oriented recoil tubes (52, 54) which have opened rear end portions (60, 62) closed with rear frangible seals (64, 66). In use, a cartridge (90) including an explosive charge (88) is to be inserted in the barrel inner chamber at its rear end, and the barrel, recoil channels and recoil tubes (52, 54) are to be filled with water. The frangible seals (38, 64, 66) prevent the water from leaking out of the disrupter while it is positioned near a bomb to be deactivated.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: June 25, 2002
    Assignee: Proparms Ltd.
    Inventor: Josef Elsener
  • Patent number: 6227097
    Abstract: The technical scope of the invention is that of devices to regulate the counter-recoil rate of an artillery cannon according to the temperature. The regulation device according to the invention comprises a buffer co-operating with a ring, so as to ensure the gradual braking of the cannon at the end of the counter-recoil operation by rolling the brake oil through a leakage section located between the buffer and the ring. It is characterized in that it incorporates at least one modulation device comprising a heat-sensitive element made in a shape-memory alloy, such element ensuring, by its distortion, an increase in the leakage section when the temperature drops below a given threshold. Application to recoil mechanisms of artillery cannons.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: May 8, 2001
    Assignee: Giat Industries
    Inventors: Joël Brianne, Alain Charton
  • Patent number: 6227098
    Abstract: A recoil-attenuating system for a gun having a barrel and breech assembly slidably mounted on a supporting carriage, the system using combustion gases at an early stage in the firing action to drive a piston in a cylinder which in turn is connected to a fluid-damped attenuator connected between the barrel and the supporting structure. The system allows a considerable reduction in weight of the entire gun structure.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: May 8, 2001
    Inventor: James D. Mason
  • Patent number: 6178866
    Abstract: Improvements in or relating to field howitzers A light weight field howitzer includes a barrel which is supported by a cradle constructed from hollow members and which is pivotally mounted about a trunnion bearing secured to a chassis. The trunnion bearing lies on the barrel axis and is positioned beyond the limit of maximum recoil of the barrel. Front stabilisers and rear trail support legs are provided to spread the load of the howitzer and spades are rigidly secured to the chassis. The howitzer includes a single hydraulic accumulator arrangement constituting a combined recoil buffer and recuperator system. A barrel elevating means is provided comprising a geared manual means assisted by a precompressed gas system.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 30, 2001
    Assignee: Vickers Shipbuilding & Engineering Limited
    Inventors: Harold Leslie Searle, David Andrew Eaglestone, James Bone