Abstract: A recoil system for a self-loading firearm has a rear mount, a capture element connected to the rear mount with a floor surface and guide rod, a first spring encompassing the guide rod with a rear end abutting the floor surface, a first sleeve defining a bore encompassing the first spring with a forward end abutting a forward end of the first spring, a second spring receiving the first sleeve with a rear end abutting a rear portion of the first sleeve, a second sleeve defining a bore encompassing the second spring with a forward end abutting a forward end of the second spring, a third spring receiving the second sleeve with a rear end abutting a rear portion of the second sleeve, and a bolt carrier having a rear face abutting a forward end of the third spring and an opening receiving a forward end of the second sleeve.

Abstract: A reduced stroke length telescopic recoil mechanism for a firearm having a barrel and a slide movable rearwardly with respect to the barrel during an initial part of a firing cycle, and forwardly during an ending part of the firing cycle, the recoil mechanism having a base, an axle fixed to the base, a central tube slidably mounted on the axle, an inner spring engaged between the base and the central tube for biasing the central tube forwardly away from the base, an outer tube slidably mounted with respect to the central tube, a central spring engaged between the central tube and the outer tube for biasing the central tube forwardly away from the base, and an outer spring engaged between the slide and the outer tube for biasing the slide forwardly of the base.

Abstract: A gas operating system for automatic cycling of a pistol-caliber firearm is disclosed. The disclosed system may be configured to utilize gas produced by combustion of pistol cartridge propellant to automatically cycle the firearm. To that end, the disclosed system may include a gas block which routes high-pressure gas from the barrel through a gas port to a piston. The location of the gas port may be selected to lie within a region of the barrel which generally corresponds with the peak of the pressure curve associated with a given pistol cartridge. The high-pressure gas may impinge on the piston head, forcing the piston rearward and into physical contact with a short-stroke operating rod affixed to the bolt carrier of the host firearm. Consequently, the bolt carrier may be driven rearward, allowing for cycling of the firearm to progress.

Abstract: A straight pull bolt action system for use with a firearm includes a bolt, an action bar, a locking pin and a locking lug. The locking lug front end is pivotally moveable between an up position and a down position, the bolt and action bar are longitudinally moveable between forward and rearward positions. The bolt has a lower locking surface that locks with the locking lug front end when the bolt is in the forward position and the locking lug front end is in the up position. The locking pin has one portion slidably disposed in an opening in the bolt and another portion slidably disposed in an L-shaped opening in the action bar.

Abstract: A spring/rod recoil assembly may be improved with Belleville springs arranged in combinations of nested and inverted stacks that absorb recoil impact energy while providing rebound energy to properly load cartridges from the magazine into the chamber. A firearm assembly may include a cylindrical spring, and guide rod—having stops at both ends—lengthwise situated within the cylindrical spring. The assembly may include a Belleville spring stack captured on the guide rod between a back-end stop and the cylindrical spring, with one or more stacks of nested springs and one or more stacks of inverted springs. The spring stack may be arranged to return some of the recoil energy produced during firing of the firearm, and decelerate slide velocities without damage to the firearm. Each spring has a diameter allowing it to fit within a back chamber where at least the back-end of the guide rod and spring are situated.

Abstract: An operating system for an individual firearm, such as a rifle, comprises a carriage (14) sliding axially in the compartment of the body of the firearm, an obturator (10) associable to the barrel (2), an elastic element (16), compressible between the carriage (14) and the obturator (10). In the configuration of firearm ready to fire with the bullet in the barrel, the obturator (10) has a free compression stroke (D) for the compression of the elastic element (16) and the barrel (2) has a free firing stroke (C) in relation to the abutment (32) of the operating compartment (8).

Abstract: The invention comprises an improved recoil control device comprising a bolt head and an inertia block or slider for use in a variety of firearms. In one embodiment, the bolt head and inertia block are articulated so that the displacement of the bolt head results in a force component outside the firing axis of the barrel of the firearm. The device can be incorporated into firearms of a variety of sizes and configurations to produce recoil reduction and/or weight reduction advantages.

Abstract: Damping apparatus for use with firearms are described herein. An example firearm described herein includes a barrel assembly mounted in a frame of the firearm. A damper apparatus is axially disposed between a breech assembly and a portion of the frame of the firearm opposite a muzzle end of the barrel assembly, wherein the damper apparatus is operatively coupled to the barrel assembly and slidably receives a firing pin guide.

Abstract: A recoil-operated, impulse averaging, air-cooled, magazine-fed, automatic weapon. An operating group of the weapon includes a chamber, a bolt, a barrel extension and one or more toggles. The recoil action of the weapon from firing a first round drives the toggles in a motion constrained by a cam way. The toggles then drive the chamber in a linear reciprocating motion ejecting a first round and over-riding the next round. An impulse averaging system controls the speed of the recoil.

Abstract: A recoil-operated, impulse averaging, air-cooled, magazine-fed, automatic weapon. An operating group of the weapon includes a chamber, a bolt, a barrel extension and one or more toggles. The recoil action of the weapon from firing a first round drives the toggles in a motion constrained by a cam way. The toggles then drive the chamber in a linear reciprocating motion ejecting a first round and over-riding the next round. An impulse averaging system controls the speed of the recoil.

Abstract: A device and method for increasing the rate of the firing cycle of a semi-automatic firearm includes a base that is adapted to support any one of a variety of semi-automatic firearms. The base includes a trigger extension with a grip, a slide mount, and a slide housed within the slide mount. At least the receiver, barrel, and trigger assembly of the firearm are secured to the base so that they may move as a single unit upon the base between a rearward position upon discharge of the firearm and a forward position. A biasing means continuously biases the receiver, barrel, and trigger assembly upon the base toward the forward position to effect successive discharges of the firearm.

Abstract: A recoil mitigation apparatus for a projectile-firing device, such as an explosives disrupter, is provided. At least one brake shoe is positioned proximate the projectile-firing device and means are provided for urging the at least one brake shoe toward the projectile-firing device. The urging of the at least one brake shoe provides a frictional force to mitigate the recoil of the projectile-firing device. In a preferred embodiment, at least one pair of brake shoes are provided. In a further preferred embodiment, the each of the at least one pair of brake shoes are positioned in a facing, spaced apart relationship and the at least one pair of brake shoe combination is positioned in a coaxial relationship to the projectile-firing device.

Abstract: A braking system is provided for mitigating the linear or rotational motion of an object having an axis, the linear or rotational motion being coaxial with the axis. In particular, the motion is the type which is the result of an impulse imposed over a short period of time, typically less than one second. The object whose linear or rotational motion is to be mitigated is disposed coaxially within a tube. The braking system includes at least one brake shoe positioned within an annular free space defined by the outer surface of the object and the inner surface of the tube. The at least one break shoe may be urged against the outer surface of the object or the inner surface of the tube to effect the mitigation.

Abstract: A recoil-mitigated projectile-firing device comprising a firing assembly, the firing assembly comprising the projectile-firing device secured within a tube and the recoil-mitigated projectile-firing device further comprising a brake assembly surrounding a portion of the tube. The brake assembly comprising at least one brake shoe supported within a frame and means for urging the at least one brake shoe against the outer surface of the tube. When the projectile-firing device is discharged, the firing assembly moves relative to the brake assembly and the frictional force mitigates the recoil.

Abstract: A contained Davis gun system enables misfire and hang-fire handling for fire out of battery (also known as soft recoil). The gun system decreases structural dynamic activity of the gun barrel during launch with resulting increases in system accuracy. The gun system further presents synergistic advantages when combined with a conventional recoil system in a double recoil design. The gun system includes a non-recoiling barrel and a recoil system engineered to contain a recoiling inertial breechblock capable of translating within the gun barrel. The recoil system includes a brake and a spring secured to a mount fixture. The breechblock enables the loading of the propellant and the projectile within the barrel, and further enables pressure to be contained within the barrel during firing. The recoil system applies a load to the breechblock, which is a function of the breechblock position and its velocity within the barrel.

Abstract: A recoil mitigation device is provided for a projectile-firing device, such as an explosives disrupter, in which a brake is attached to a barrel of the projectile-firing device and the projectile-firing device/brake combination is positioned coaxially within a tube, the tube secured to a frame or other suitable foundation. The brake includes two or more brake shoes positioned within an annular free space defined by the outer surface of the barrel and the inner surface of the tube and adapted to frictionally contact the inner surface of the tube. An apparatus is attached to the barrel for limiting the lateral movement of the brake shoes and there is an apparatus for urging the brake shoes in an outward radial direction against the inner surface of the tube, whereby when a projectile is fired from the barrel, the brake mitigates the recoil of the projectile-firing device.

Abstract: An automatic projectile firing weapon and a related method for absorbing the recoil force of an automatic projectile firing weapon are disclosed. The weapon includes a barrel assembly that is slidably mounted in a receiver, biased by an operating spring, and engageable with a main sear. A gas operated bolt assembly is slidably mounted within the barrel assembly and is driven by a bolt spring. A trigger is provided to release the main sear and allow the operating spring to move the barrel assembly forwardly in the receiver. There is further provided a buffer connected between the receiver and the barrel assembly to dampen the velocity of the barrel assembly to ensure the barrel assembly is moving at a predetermined maximum velocity when a round is fired at a predetermined firing position. The recoil energy from the fired round is absorbed mainly by the forward motion of the barrel assembly and in part by the operating spring and buffer.

Abstract: A firearm frame constructed of plastic material having slide rail guidance members in the forward, central and rear portions of the frame. The frame is useful with a barrel unit which is cammed back and down by slide reciprocation and by a cam block which with barrel movement being arrested by the walls of a frame cavity. Forces and energy created in arresting such back and down movement of the barrel and block is transferred to the frame by the block hitting the frame cavity. A slide stop pin passing through openings in the frame and cam block also assist in transferring energy to the frame. Forces causing the slide to move upward during the arresting of barrel and block is prevented buy the rail guidance members. The trigger rotates about a trigger trunnion located in such frame cavity below the cam block.

Abstract: The invention discloses a hand-held firearm with a barrel assembly (2, 18, 36, & 54) moving back and forth essentially in or opposite the direction the weapon is fired in between a forward and a rear stop (44, 48, & 50) on or in a frame or grip assembly (12). A breech assembly (6 & 32) that moves back and forth essentially in the same direction as the barrel assembly between a forward and closed position and a rear and open position, moving out of the closed position and into the open position against the force of a closure spring (16) and, at the end of its return stroke, the frame or grip assembly or a component (64 or 64') resting off it. A buffering spring (66) tensions the barrel assembly toward the forward stop (44 or 50) and buffers its contact with the rear stop (44 or 48).

Abstract: Weapons system comprising a fixed reference, a launcher tube slidingly mounted in relation to the fixed reference and a damper inserted between the fixed reference and the launcher tube. The weapon further comprises a lock serving as a stop for the damper in the launching position, so as to avoid displacement of the damper in the initial launching phase, and a sensor which reacts to projectile launching, capable of releasing the lock so as to rearwardly eject the unit formed by the damper and the launcher tube.

Abstract: A recoil dampening device incorporating a dynamic braking system and index ring. The recoil dampening device of the present invention is intended for use on weapons, especially heavy caliber weapons, having a recoiling barrel. The recoil dampening device is coaxial with the weapon's barrel and has a constant pressure brake assembly and a dynamic brake assembly. The recoiling barrel and the brake assemblies are carried within a cylindrical tube that is coaxial with the brake assemblies and the barrel. As the weapon is discharged, the force of the recoil causes the barrel to travel rearwardly thus engaging a coaxial spring. The spring engages the dynamic brake assembly and as the barrel travels rearwardly, the force applied to the dynamic brake is increased in a linear fashion, causing an increasing amount of frictional braking pressure to be applied to the inner surface of the tube and the exterior surface of the barrel.

Abstract: A low-recoil gun (10), in particular a compressed-air gun or hand firearm, is proposed, comprising a stock assembly (25) and a barrel assembly (20) displaceable relative to the stock assembly (25) in the longitudinal direction (B) of the gun (10). The barrel assembly (20) can be moved contrary to the direction of fire (A), on the occasion of a discharge, out of a position of readiness to fire. The reverse travel of the barrel assembly (20) due to the discharge is restrained by an locking device (40) capable of being overcome by the recoil energy of the barrel assembly (20). In overcoming the locking device, the barrel assembly (20) performs work, which is deducted from the recoil energy, so that the recoil ultimately transmitted to the gunner is at least substantially reduced. In the gun according to the invention, the axial force required in longitudinal direction (B) of the barrel to overcome the locking device (40) is adjustable.

Abstract: Locked automatic pistol in connection with which the recoil-produced delivery of momentum of the barrel (2) is buffered.

Abstract: A heavy support weapon, for example, of 30 mm caliber, designed for firing from conventional machine gun mounts without undue recoil loads transferred to the gun mount. The weapon is designed for first round accuracy whether in the automatic open bolt or semi-automatic closed bolt mode. The weapon 10 includes a barrel 13 joined to a barrel yoke 21 in a receiver 14 aft of a front housing assembly 15. The recoil system includes a main recoil spring 30, a secondary spring 23, a buffer group including rods 60, springs 61 and plate 63. A slide bolt assembly 40 includes a slide 41, a bolt 42, a face 43, bolt face levers 44 and actuating pins 45, all within the receiver 14. The bolt face 43 is driven vertically by the bolt face levers 44 to receive a new round, load it and remove and discharge a spent casing. The slide bolt assembly 40 travels forward and aft during the firing cycle.

Abstract: The present invention comprises a self-actuating blow forward firearm having a fixed breech block located to the rear of the firearm. A cartridge feeder provides a supply of cartridges to the loading area so that the firearm can be used as an automatic or semi-automatic weapon. The firearm also contains an outer receiver tube and a movable inner gun barrel which is biased toward the rear of the firearm by a spring disposed in a chamber between the receiver tube and the inner movable barrel. When the trigger mechanism is activated, the action of the bias spring causes the inner movable barrel to move backward toward the breech block striping a cartridge from the feeding device and forcing the end of the cartridge against the firing pin on the breech block. The bullet is fired down the bore of the inner movable barrel. The movement of the bullet along the bore of the inner movable barrel drags the barrel forward against the action of the bias spring.

Abstract: A system for movably positioning a first member relative to a second member. The system has a hole in the first member and a coiled spring/plunger member positioned in the hole. The coiled member has a section that extends out of the hole that does not possess significant spring properties and thus can act as a plunger. The plunger section of the coiled member can be moved in and out of an aperture to the hole without risk of damage. Thus, the second member can be moved relative to the first member by compressing the coiled member or moving away from the coiled member and, the coiled member can position the second member relative to the first member while at rest.

Abstract: An electrically-fired cartridgeless ammunition projectile firearm system, which can operate with or without batteries, and which system has only one moving part is provided. The firearm system uses magnets to generate the charges which are required to detonate the projectiles, uses opposing magnets to eliminate the need for the inclusion of recoil springs after firing, and also uses magnets to dampen the recoil of the firearm. Additionally, it provides a firearm system, which, when loaded with a magazine and ready to fire, operates with no external openings with the exception of the muzzle and cooling slots surrounding the firing chamber, so that it can operate under almost any physical or climatic conditions. It is also designed to utilize a forward motion of its barrel on firing, which reduces the amount of recoil felt by the user. The several factors which reduce recoil, improves accuracy.

Abstract: A grenade launcher and attachment for use on an infantry weapon, such as a rifle. The launcher fires grenades of the type which have a hollow tubular rear chamber slidably mounted on a guide rod and a piston head fitted into the bore of the chamber to seal an explosive charge therein and form an extensible explosion chamber. Locking elements for silently installing the grenade launcher without the use of complex tools are provided. Recoil buffering or compensation is provided to minimize the perceived recoil when grenades or other projectiles are launched from a shoulder held firing position. A detent is provided to secure projectiles on the guide tube until they are fired.

Abstract: A countercoil and recoil damper for an automatic firearm which ensures floating support of the weapon during automatic bursts of fire is disclosed. To achieve this, the damper provides annular spring packs (32-35) and a precompressed spring (24), colinear with the other annular spring packs. The precompressed spring is a coil spring which is compressed during countercoil and is released during recoil in order to increase the hysteresis of the annular spring packs (32-35).

Abstract: An automatic hand firearm for ammunition with extremely high projectile momentum is designed as a recoil loader which has a mounted barrel, supported by a spring and brake system (6, 7) on the weapon housing, a breech block (9, 10), which can be rigidly locked with the barrel and which encompasses a breech block carrier (9), movably led in the weapon housing (2) and supported on a breech-closing spring, and also encompasses a plug (10) which is longitudinally adjustable in relation to the breech block carrier, which carries locking parts (14) which can be engaged or disengaged with locking parts (15) on the barrel (1), and having devices comprising cams (18) and follow-up parts (17) for engaging-and-disengaging locking parts (14, 15) with the counterrecoil and recoil motion of the breech and with which the device for disengaging the locking parts (14, 15), arranged on the barrel (1) and on the plug (10), with the recoil motion of the breech block, is arranged between breech block carrier (9) and plug (10).

Abstract: A recoil and counter recoil device for a firearm which can fire a plurality of shots in succession comprises a recoil spring bearing against a barrel and a receiver which receives the barrel for motion in a recoil and counter recoil direction and an annular spring which is axially deformable to exert a load connected between the barrel and the receiver to counteract the action of the recoil spring in the counter recoil direction to cause the barrel to float in a confined motion in the recoil and counter recoil directions during successive firing of the firearm.

Abstract: A portable fire-arm having a recoil brake braking the recoil stroke of the barrel relative to the breech-carrier when a shot is fired, which includes a manually operated mechanical connection device between the barrel and the recoil brake the whole being so arranged that the barrel can be manually retracted into the breech-carrier in the retracted carrying position, the brake being rendered inoperative. A device is provided for locking the barrel relative to the breech-carrier in that retracted position.

Abstract: A firearm comprising a barrel assembly, forward receiver, and receiver brake. The barrel assembly comprises a barrel, compression spring, gas tube, and front and rear bushings. The gas tube is situated around the barrel between the front and rear bushings and is not attached to the barrel. The compression spring is situated around the barrel between the front and rear bushings and inside of the gas tube. The front and rear bushings are fixedly attached to the forward receiver. The barrel comprises a gas port that is covered by a gas regulator and is in fluid communication with a gas chamber situated between the front bushing and the gas regulator, which is fixedly attached to the barrel. The receiver brake is fixedly attached to the forward receiver on its distal end.