Breech Slide Type Patents (Class 89/196)
  • Patent number: 10982917
    Abstract: A gun slide galling prevention system includes a gun with a slide forming an elongated body. The elongated body includes a thickness and an inner surface along with an elongated cavity extending inwardly from the inner surface and into the thickness. The system also includes a rail separated from the slide and configured to extend a length of the elongated body and an insert having a configuration of the elongated cavity, the insert fits within the elongated cavity and remains flush with inner surface, the insert forming a channel configured to receive the rail therein.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: April 20, 2021
    Inventor: John C. Schober
  • Patent number: 10809034
    Abstract: A barrel assembly for use in a semiautomatic firearm, including a barrel and a takedown lever. A rear portion of the barrel includes a follower lug and a rear lug extending from an underside of the rear portion. A pin of the takedown lever includes a notch with a vertical face configured to contact a vertical face of the follower notch when the firearm is in the locked position. The rear lug is configured to be supported by a portion of a locking block of the firearm prior to firing and during a portion of the recoil period. A fitting pad extending downward from a rear lug of the barrel can be adjusted to provide a customized fit of the barrel to a frame of the firearm. The modifications to the barrel assembly result in increased dwell time and accuracy of the firearm.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: October 20, 2020
    Assignee: Apex Tactical Specialties, Inc.
    Inventor: Randall M. Lee
  • Patent number: 10641562
    Abstract: Firearms with recoil mitigation have a frame with a connected slide, the slide configured to reciprocate relative to the frame along a slide reciprocation path, the slide having a ramp surface angularly offset from the slide reciprocation path by a first angle, a follower element connected to the frame and configured to reciprocate with respect to the frame along a follower path, the follower being biased toward the slide, and the follower having a slide contact portion configured to contact the ramp surface of the slide, such that reciprocation of the slide generates reciprocation of the follower element. The reciprocation of the slide may define a horizontal plane. The ramp surface may face downwardly and rearwardly. The slide may include a top panel and opposed downwardly-depending side panels each having lower edges. The ramp surface may be formed in a cutout above the lower edge of a side panel.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: May 5, 2020
    Inventor: James Robert Patrick, IV
  • Patent number: 10563940
    Abstract: A firearm slide and a firearm having a slide has a rail portion along which a slide moves translationally, the slide provides a plurality of serrations. The slide has a height and each serration of the plurality of serrations is cut into the slide along the entire height of the slide. The slide defines a horizontal axis and the plurality of serrations are angled relative to the horizontal axis. The serrations are in groups of serrations separated by one or more unserrated portions of the slide. The serrations being configured to maximize the thickness of the slide portion in the rail portion.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: February 18, 2020
    Inventors: Billie Cyril Hudson, III, Lauren Hudson, Kevin Michael Blanford
  • Patent number: 10465999
    Abstract: A handgun subassembly includes a frame with a distal frame portion and a proximal frame end portion, where the frame has frame rails extending longitudinally along a top of the frame. A slide is displaceable along the frame rails between a recoil position and a battery position. The slide defines a catch surface adjacent a bottom portion of the slide. A forward assist assembly is disposed between the slide and the frame or grip module. The forward assist assembly provides a force on the slide in a distal direction when the slide is within a predetermined distance from the battery position.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: November 5, 2019
    Assignee: Sig Sauer, Inc.
    Inventors: Adrian Thomele, Tyler Rainaud
  • Patent number: 10422604
    Abstract: A firearm assembly is disclosed. The firearm assembly may include a slide comprising a guide slot and a barrel attachment comprising a main body and an elongated guide beam. The elongated guide beam may be configured to slide within the guide slot.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: September 24, 2019
    Assignee: Agency Arms, LLC
    Inventors: Randy Paul Niswander, Michael Lee Parks
  • Patent number: 9239207
    Abstract: An extendable slide member on a pistol slide action, providing leverage and a gripping base for a user to pull back or “rack” the slide along guides on a pistol frame, in a longitudinal motion relative to the pistol frame. The slide member facilitating racking the slide when in an extended position the slide member rotates either laterally outwards from a side surface of the slide or vertically upwards from a top surface of the slide, and presents a gripping segment for the user to pull the slide towards the breech end of the pistol.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: January 19, 2016
    Assignee: Taurus International Manufacturing, Inc.
    Inventor: Mark Kresser
  • Patent number: 9182184
    Abstract: The invention relates to a magazine for a handgun, comprising a chamber that accommodates the ammunition and a magazine head that is suitable for being accommodated by the magazine shaft in the breechblock housing of the gun, characterized in that according to the invention an ejector plate is arranged on the magazine head and means are provided for changing the relative position of said ejector plate in the magazine shaft when a magazine is inserted. The solution according to the invention makes it possible to change the position of the magazine head in the magazine shaft by means of an adjusting mechanism and thus to also change the relative position of the ejector plate, which is now on the magazine head, in the magazine shaft. In the process, the position of the ejector plate relative to the feeding web of the breechblock generally changes.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: November 10, 2015
    Assignee: German Sport Guns GmbH
    Inventor: Dietmar Emde
  • Patent number: 9140505
    Abstract: This invention relates to countering of the weight caused by high temperature and pressure that arise during the firing of the pistol by this component, instead of the aluminum alloy body; by inserting, into the pistol with light alloy body structure, a bearing component that is all-steel, independent of the body of the pistol, and that can be assembled and disassembled when necessary; elimination of deformations of the aluminum alloy body caused by the high temperature and high pressure; and lengthening the working life of the pistol by increasing the rate of fire.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: September 22, 2015
    Assignee: SARSILMAZ SILAH SANAYI A.S.
    Inventor: Latif Aral Alis
  • Patent number: 9021730
    Abstract: A firearm (1) comprising a stock (2) and a slide (3) and a bolt (50) suitable to reciprocally lock them. Firearm wherein the slide (3) comprises a barrel (31), a spring and a spring-holder (35) suitable to act on the bolt (50). The bolt (50) comprises a spring-holder seat (500) which acts in conjunction with an engagement end (350) of the spring-holder (35). The spring-holder seat (500) comprises a support surface (501), a translation surface (502) which permits the translation of the bolt (50) acting in conjunction with said engagement end (350).
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: May 5, 2015
    Assignee: Fabbrica d'Armi Pietro Beretta S.p.A.
    Inventors: Claudio Gentilini, Giovanni Prandini
  • Patent number: 8931394
    Abstract: Apparatuses and methods for facilitating reloading and resisting recoil of a firearm include an elastic member in communication with a portion of the firearm. A contact member coupled to the portion of the firearm, the elastic member, or combinations thereof, is movable between a first position in which movement of the portion of the firearm is biased by the elastic member and a second position in which movement of the portion of the firearm is generally unaffected by the elastic member. An actuator can be used to move the contact member between the first and second positions.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: January 13, 2015
    Inventors: Martin Bryant, James M. Buschow
  • Patent number: 8863638
    Abstract: A cam pin system, includes a cam pin comprising a first cylindrical portion having a first length and a first diameter and a second cylindrical portion concentric with the first cylindrical portion and having a second diameter larger than the first diameter, the second cylindrical portion comprising a through-hole to accommodate the passage of a firing pin. The system includes an end plate detachably connected to the first cylindrical portion of the cam pin, a cylindrical bushing encircling the first cylindrical portion and having an outside diameter approximately equal to the second diameter and a bushing length approximately equal to the first length, and lubricant between the cylindrical bushing and the first cylindrical portion. The cam pin system is configured so that the cylindrical bushing can rotate freely about the first cylindrical portion.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: October 21, 2014
    Inventor: Herbert Wilson Lewis, III
  • Publication number: 20140216243
    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.
    Type: Application
    Filed: October 15, 2013
    Publication date: August 7, 2014
    Inventor: Charles W. Coffman, II
  • Patent number: 8485086
    Abstract: This invention relates to countering of the weight caused by high temperature and pressure that arise during the firing of the pistol by this component, instead of the aluminum alloy body; by inserting, into the pistol with light alloy body structure, a bearing component that is all-steel, independent of the body of the pistol, and that can be assembled and disassembled when necessary; elimination of deformations of the aluminum alloy body caused by the high temperature and high pressure; and lengthening the working life of the pistol by increasing the rate of fire.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: July 16, 2013
    Inventor: Latif Aral Alis
  • Patent number: 8333142
    Abstract: A slide for a semi-automatic pistol is provided where the pistol has a frame, a slide mounted on the frame, a barrel mounted between the slide and the frame, and a magazine for feeding cartridges into the chamber of the barrel. The slide includes a front portion for receiving the barrel where the front portion has a breech face end, a block having an elongate passage for receiving a firing pin mechanism, and a cam surface extending from a lower surface of the block adjacent to the breech face end which functions as a feed ramp for feeding cartridges from the magazine to the chamber. The cam surface is a truncated hemispherical protuberance having a flat surface where the flat surface extends at an angle from the breech face. Positive contact between the breech face and the topmost cartridge is ensured during forward movement of the slide.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: December 18, 2012
    Assignee: Kimber IP, LLC
    Inventors: Yury Karfiol, John Goliber
  • Patent number: 8297176
    Abstract: An improved semiautomatic firearm is provided comprising as assembly which reduces the effort of cocking the firearm or loading a first cartridge. A spring tube contains an inner recoil spring which is employed only during cycling of the firearm when firing. For initial cocking purposes, the inner recoil spring is bypassed in favor of a lighter outer spring which is selectively engaged by the user. When the inner recoil spring is engaged, both inner and outer springs are employed without adversely affecting the recoil dynamics of the firearm.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: October 30, 2012
    Inventors: James M. Buschow, Martin Bryant
  • Patent number: 8087344
    Abstract: A recoil operating pistol has a barrel and slide with at least a pair of flat mating surfaces extending along a substantial length of both the barrel and slide parallel to each other on opposite sides of the barrel. The matching flat surfaces of the barrel and slide allow relative sliding motion between the slide and the barrel when the at least a portion of the barrel is received in the hollow interior of the slide.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: January 3, 2012
    Assignee: Double Nickel Holdings, LLC
    Inventors: Kevin Siddle, Bruce K. Siddle
  • Patent number: 8065950
    Abstract: An automatic pistol essentially consists of an immovable barrel, a breech with a firing pin and a cartridge extractor, a breech frame, a spring-loaded device for the removal of gas with a gas piston and a gas cylinder, a firing mechanism and a magazine. The barrel is fitted with an end piece, which is located in the lower part of the rear end of the barrel. The design of the breech allows for the displacement of its front part downwards, when the breech is in its front end position. The front part of the breech is fitted with side locking lugs. The corresponding locking grooves are located in the cavities on the end piece of the barrel. The gas piston has an opening for ejecting the cartridge casing. In the course of the backward movement, the gas piston unlocks the breech and draws it back. In the forward movement, the breech is carried forward and pushed downwards. The gas cylinder is located at the front part of the barrel and encompasses the barrel. Along the length of the barrel gas ducts are fixed.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: November 29, 2011
    Assignee: Hans Wrage & Co. GmbH
    Inventor: Victor Anatolevich Kaminsky
  • Patent number: 8037805
    Abstract: An apparatus having a frame, a slide assembly and a barrel is disclosed. The slide assembly may be slidably mounted to the frame along a sliding plane. The barrel may be disposed in the slide assembly. The barrel generally has a bore shaped to accept an ammunition round. The bore may define a bore axis intersecting the sliding plane such that when the ammunition round is fired the slide assembly recoils both backward and upward relative to the frame.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: October 18, 2011
    Inventor: Randy A. Neroni
  • Patent number: 8006609
    Abstract: A slide catch-ejector assembly for an autoloading firearm. An embodiment of a firearm having a slide catch-ejector assembly includes a housing, a slide slidably mounted on the housing for rearward and forward axial movement, and an assembly having a slide catch portion configured for engaging the slide and an ejector portion configured for ejecting cartridge casings from the firearm. In one embodiment, the assembly is selectively movable in the housing between a deactivated position in which the slide catch portion is not engageable with the slide and an activated position in which the slide catch portion is engageable with the slide. The ejector portion is selectively movable into and out of axial alignment with a chamber that receives a cartridge via moving the assembly between the deactivated and activated positions.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: August 30, 2011
    Assignee: Sturm, Ruger & Company, Inc.
    Inventors: Robert A. Kallio, James McGarry
  • Patent number: 7987763
    Abstract: A firing pin system for a firearm, including a breech block, a firing pin slidably disposed in the breech block and a single firing pin coil spring adapted to both urge the firing pin toward a cartridge in a barrel of the firearm when the firearm is fired and, subsequent to firing, to urge the firing pin back away from the cartridge such that the firing pin does not protrude through a breach face of a breach block of the firearm subsequent to firing.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: August 2, 2011
    Assignee: Kimber IP, LLC
    Inventors: Nehemia Sirkis, Amir Zonshine
  • Patent number: 7941954
    Abstract: A handgun comprised of a frame having a barrel with a muzzle end and a breech end. A breech area is adjacent the breech end of the barrel. A slide is movable on the frame between one of a closed position and a blow-back position. An opening in the slide allows communication with the breech area. A hatch on the slide is movable between one of a closed position enclosing the breech area and an open position allowing access to the breech area.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: May 17, 2011
    Assignee: Covert Arms Ltd.
    Inventors: Larry L. Carr, Trent A. Warncke
  • Patent number: 7861640
    Abstract: An improved barrel link for consistently and reliably placing a barrel of a semi-automatic pistol into battery is disclosed. One embodiment of the present invention extends the width of the barrel link beyond that of the receiving channel of the barrel lug legs so as to substantially equal the exterior dimension of the barrel lug. In addition, the portions of the barrel link extending beyond the width of the channel of the barrel lug are designed to provide multiple points of contact with the front face of the barrel lug in both vertical and horizontal positions so as to reliably and consistently place the barrel into battery. The additional width of the barrel link and additional contact between the link and barrel lug aids in stabilizing lateral and rotational forces prolonging the life of the weapon.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: January 4, 2011
    Inventor: Karl C. Lippard
  • Patent number: 7735411
    Abstract: A pistol including a grip, a barrel slide movable on the grip in a firing direction, and a barrel capable of being interlocked with the barrel slide. A first locking device includes a projection provided on the outer contour of the barrel and has a forward-facing first inclined surface. A second locking device includes a lever pivotably guided in the barrel slide and a dog having a rearward-facing, second inclined surface cooperating with the first inclined surface. The unlocking means includes a stop that is provided in the grip and cooperates with a lug of the barrel. When the barrel impacts against the stop and the barrel slide continues its movement, the inclined surfaces slide relative to each other, and the lever is pivoted against the force of a spring such that the dog releases the barrel slide.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: June 15, 2010
    Assignee: Caracal International LLC
    Inventor: Wilhelm Bubits
  • Patent number: 7673553
    Abstract: An improved barrel link for consistently and reliably placing a barrel of a semi-automatic pistol into battery is disclosed. One embodiment of the present invention extends the width of the barrel link beyond that of the receiving channel of the barrel lug legs so as to substantially equal the exterior dimension of the barrel lug. In addition, the portions of the barrel link extending beyond the width of the channel of the barrel lug are designed to provide multiple points of contact with the front face of the barrel lug in both vertical and horizontal positions so as to reliably and consistently place the barrel into battery. The additional width of the barrel link and additional contact between the link and barrel lug aids in stabilizing lateral and rotational forces prolonging the life of the weapon.
    Type: Grant
    Filed: April 19, 2008
    Date of Patent: March 9, 2010
    Inventor: Karl C. Lippard
  • Patent number: 7571672
    Abstract: A method of modifying a .45 ACP pistol having a slide and a receiver defining a magazine well includes the steps of reducing the size of the magazine well and shortening the slide. The slide includes a breech face and a proximal end and the magazine well includes a front wall and spaced therefrom a rear wall. Reducing the size of the magazine well involves moving the rear wall closer to the front wall. Shortening the slide involves removing material from between the breech face and the proximal end. The shortening of the slide generally corresponds to the size reduction of the magazine well.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: August 11, 2009
    Assignee: Springfield, Inc.
    Inventor: Charles David Williams
  • Patent number: 7472507
    Abstract: A firearm includes a frame, a slide, and modular sear and trigger mechanism housings. The frame has fore and rear receptacles integrally formed therein, e.g., upwardly open compartments accessible from the top of the frame. The modular housings house one or more operational components of the firearm, e.g., trigger and sear components, and are configured for “drop in” insertion into the receptacles. Each housing also includes a set of integral slide rails. For assembly, the operational components are attached to the modular housings, and the housings are dropped into the receptacles and secured to the frame. The slide is operably positioned on the slide rails for reciprocating movement thereon. The frame is provided without integral rails and other features for supporting the operational components. Instead, the rails are provided as part of the modular, drop-in sear and trigger mechanism housings, which also support the operational components.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: January 6, 2009
    Assignee: Smith & Wesson Corp.
    Inventors: Brett Curry, Michael J. Poulin
  • Patent number: 7451683
    Abstract: The invention concerns a pistol with a housing (1), breech part (4) movable relative to housing (1), a barrel (5) arranged within breech part (4) and a trigger system (14, 15 16). The housing (1) according to the invention contains a receiver (2) and an upper housing part (3) designed in one part with it, which encloses the breech part (4) with the barrel (5) arranged in it.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: November 18, 2008
    Assignee: J.P. Sauer & Sohn GmbH
    Inventors: Harald Kellermann, Adrian Thomele
  • Patent number: 7389719
    Abstract: A firearm such as a semiautomatic pistol or handgun includes a barrel and a slide with a front aperture for rearward movement of the slide around the barrel during cycling of the slide between forward and rearward positions. A wire bushing is provided between the outer diameter of the barrel and the inner diameter of the aperture of the slide for positioning the barrel within the aperture during cycling. The wire bushing is a spring-like, generally round or O-shaped member (e.g., a bent metal wire) mounted within a groove provided in the slide aperture, with portions of the bushing being bent to lie out of the groove for contacting the barrel. The wire bushing reduces the tolerances between the slide and the barrel, thereby improving operation of the firearm, improves re-location of the barrel within the slide, provides for easier maintenance, and reduces mass, cost, and complexity.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: June 24, 2008
    Assignee: Smith & Wesson Corp.
    Inventor: Brett Curry
  • Patent number: 7353630
    Abstract: A camblock assembly with a camblock and a guide rod is employed in a firearm having a frame constructed of synthetic polymer material. The camblock has a front flange with flange surfaces that engage corresponding bearing surfaces of the frame to distribute forces and energy to the frame during recoil of the firearm. A shelf member is positioned at a front end of the camblock and a coiled flat wire buffer spring is positioned about the guide rod to resist movement of a reciprocating slide. A detent mechanism positioned within the camblock contacts a surface of a slide stop pin to hold the slide stop latch in place. The interior of the slide stop latch contains an elongated wire having an end that engages the frame such that the slide stop latch is biased in a down position.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: April 8, 2008
    Assignee: Sturm Ruger & Co., Inc.
    Inventor: James McGarry
  • Patent number: 7353742
    Abstract: A firing pin system for a firearm, including a breech block, a firing pin slidably disposed in the breech block and a single firing pin coil spring adapted to both urge the firing pin toward a cartridge in a barrel of the firearm when the firearm is fired and, subsequent to firing, to urge the firing pin back away from the cartridge such that the firing pin does not protrude through a breach face of a breach block of the firearm subsequent to firing.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: April 8, 2008
    Assignee: Kimber IP, LLC
    Inventors: Nehemia Sirkis, Amir Zonshine
  • Patent number: 7347022
    Abstract: A gun comprises a frame and a framework on which at least some components of a firing mechanism are mounted. The framework is inserted into a cross cavity of the frame and means for locking the framework within the frame are provided. The framework holds the whole firing mechanism except for a trigger and a connecting lever extending from the trigger. The framework comprises two hangers adapted to be laterally inserted into the cross cavity. The hangers are arranged at a mutual distance and the components of the firing mechanism are assembled between the two hangers being connected to each other by means of a bridge.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: March 25, 2008
    Assignee: Fabbrica d'Armi Pietro Beretta
    Inventor: Ugo Gussalli Beretta
  • Patent number: 7340987
    Abstract: A method of modifying a .45 ACP pistol having a slide and a receiver defining a magazine well includes the steps of reducing the size of the magazine well and shortening the slide. The slide includes a breech face and a proximal end and the magazine well includes a front wall and spaced therefrom a rear wall. Reducing the size of the magazine well involves moving the rear wall closer to the front wall. Shortening the slide involves removing material from between the breech face and the proximal end. The shortening of the slide generally corresponds to the size reduction of the magazine well.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: March 11, 2008
    Assignee: Springfield, Inc.
    Inventor: Charles David Williams
  • Patent number: 7287456
    Abstract: A breech system for a firearm exhibits a breech which can be locked in its movement in the barrel block by at least one locking element, which is pressed against the rear end of the barrel by means of a breech spring surrounding the rigid barrel of the weapon, the barrel being enclosed with the exception of the front and rear apertures, whereby the breech spring is supported at the rear section of the barrel and at least one link element subjected to tension connects the front end of the breech spring and the breech. In order to guarantee precise function and in a manner which is safe for the user, by means of a simple arrangement which is reproducible in manufacture, a purely mechanical delay element is inserted in the link between the breech (10) and the breech spring (9).
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: October 30, 2007
    Inventor: Peter Spielberger
  • Publication number: 20040144245
    Abstract: A fire arm, especially a small caliber pistol, having a grip, a frame connected to the grip, a barrel unit fixed on the frame in the operating state of the fire arm, with a barrel tube and a bolt which can move relative to the frame and barrel unit such that when a shot is fired it can move to the rear against the direction of firing, the barrel unit and/or the frame having fastening means which allow detachable mounting of the barrel unit on the frame.
    Type: Application
    Filed: January 14, 2004
    Publication date: July 29, 2004
    Inventors: Franz Wonisch, Wulf H. Pflaumer, Thomas Scheunert
  • Publication number: 20040007124
    Abstract: The present invention relates to firearms requiring the smooth operation of slidably engaged subassemblies for effecting projectile loading, maintenance, triggering, discharge, or reloading of a projectile. The major drawback of the prior art, such as that applying to slide-action pistols, is that friction occurs unevenly and at high levels between moving parts, which leads to damaging levels of frictive heat, wear, or warping, as well as jamming. The slidable guidance system proposed herein addresses this drawback by employing micro-rollers whose surfaces do not at any one point constantly touch the slidable gun part(s) with which they come in contact. Preferably, at least a set of micro-rollers and a pair of channels are installed in the inner sides of a slide and the upper outer sides of a gun frame, or on the lower face of a slide-housed slidable barrel and the upper face of a gun frame.
    Type: Application
    Filed: July 12, 2002
    Publication date: January 15, 2004
    Applicant: Sheriff Company, LTD.
    Inventor: Hideyuki Nakatani
  • Patent number: 6622609
    Abstract: Disclosed is a breech mechanism with a non-rotating breechblock that is suitable for use with repeating firearms. The present invention is composed of relatively few moving parts, and each of the parts is itself simple, yet together they become an elegant solution to the problem providing a repeating firearm which minimizes damage the ballistic characteristics of the bullet as the bullet is inserted into the chamber of the firearm. The present invention, then, provides a repeating firearm substantially with the accuracy of a single shot manual loading firearm with a non-rotating breechblock.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: September 23, 2003
    Assignee: Spearfire Ltd.
    Inventor: Shai Barkan
  • Patent number: 6442882
    Abstract: An automatic pistol converted to fire low energy ammunition in a blow-back mode has a replacement barrel that carries a cam on its upper surface. The weapon slide, as it retires during firing, contacts the cam and rotates the chamber end of the replacement barrel downwardly. This aligns the spent casing for ejection by the ejector, once extracted from the chamber. The slide may carry a removable deflector plate for contacting the cam.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: September 3, 2002
    Assignee: SNC Technologies Inc.
    Inventor: Sylvain Dionne
  • Patent number: 6234059
    Abstract: A pistol includes a cross-sectionally U-shaped frame which has first and second opposite side walls, a formed-on grip, a formed-on trigger guard, a first through bore provided in the first side wall and a second through bore provided in the second side wall in alignment with the first through bore. A structural unit is removably accommodated in the frame above the trigger guard and includes bilateral guide rails and a through aperture aligned with the first and second through bores. The structural unit is received in the frame with a form fit for preventing longitudinal displacements of the structural unit relative to the frame. A removable pin passes through the first and second through bores and the through aperture in the structural unit for removably securing the structural unit to the frame. A slide is received in the frame for forward and rearward reciprocating motions relative to the frame. The rails of the structural unit cooperate with the slide for guiding the slide during its reciprocating motions.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: May 22, 2001
    Assignee: SIG Arms International AG
    Inventors: Rudolf Fuchs, Michael Osterrath
  • Patent number: 6212991
    Abstract: The invention provides an apparatus for reducing recoil on a firearm or gun and to increase rate of firing. The invention uses a dual mass system to dynamically balance the gun wherein some of the energy of firing is absorbed within springs and thereby reduces the recoil force imparted to the gun user. The apparatus also comprises an ejector mechanism for ejecting a spent round and reloading a new round from the gun magazine with increased speed over conventional designs. The apparatus is applicable to automatic and semiautomatic handguns as well as rifles and machine guns.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: April 10, 2001
    Inventor: Taylor Frazier, III
  • Patent number: 6116137
    Abstract: An automatic handgun has a support member fixed to the end of the barrel and engageable with the slide when the slide moves forward. The mating surfaces of the support member and the slide have clutch surfaces machined into them so the two surfaces lock together snugly, thereby holding the barrel and slide together accurately. A guide rod may also be fixed to the support member to assist in holding the proper relationship when the slide is moved rearwardly.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: September 12, 2000
    Inventor: Travis R. Strahan
  • Patent number: 5983773
    Abstract: A barrel positioning spring moves a barrel in a blow-back operating pistol earwardly when the slide recoils in order to position the chamber on the barrel to receive a further cartridge with the return of the slide. This spring in a Colt(.TM.) .45 caliber pistol may be seated on the recoil spring guide rod present beneath the barrel. A removable loading ramp extension is fitted to the frame in the space between the chamber end and the next cartridge to receive such cartridge as it is being chambered by the returning slide.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: November 16, 1999
    Assignee: SNC Industrial Technologies Inc./Les Technologies Industrielles SNC Inc.
    Inventor: Sylvain Dionne
  • Patent number: 5955696
    Abstract: This invention discloses a semi-automatic pistol including a frame having a chamber for loading a cartridge, a barrel through which cartridges are fired, a slide normally in a forward position on the frame but movable rearwardly of the frame by the recoil produced by a fired cartridge, and a recoil spring normally coupled to the slide so as to be stressed by the rearward movement of the slide, and thereafter to relax to return the slide to its normal forward position and to load another cartridge into the chamber; characterized in that the pistol further includes a manually movable decoupling assembly which is manually movable from a coupling position, coupling the recoil spring to the slide, to a decoupling position decoupling the recoil spring from the slide and permitting the slide to be manually moved rearwardly of the frame and then to be returned to its normal forward position for loading a cartridge into the chamber.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: September 21, 1999
    Inventor: Yehuda Meller
  • Patent number: 5952602
    Abstract: A precision device for semiautomatic handguns, of the type that includes a single block barrel and recoil obturator carriage (11,12), where the barrel is susceptible to axial movement relative to the obturator carriage. On a cylindrical section (16) of the barrel, an alignment bush (17) is mounted, with a biconical external surface that has a first conical part (17') designed to fit in a conical hole (13) in the obturator carriage; and a second conical part (17"), of the opposite conical shape, designed to protrude forwards from the obturator carriage and be used with a blocking nut (18).
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: September 14, 1999
    Assignee: Fabbrica D'Armi P. Beretta S.p.A.
    Inventor: Ugo Gussalli Beretta
  • Patent number: 5741996
    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.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: April 21, 1998
    Assignee: Sturm, Ruger & Company, Inc.
    Inventors: William B. Ruger, James McGarry
  • Patent number: 5717156
    Abstract: A semi-automatic pistol includes a polymeric frame, a barrel secured to the frame medially of its front end and rear end. A slide is slidable relative to the frame without direct engagement therewith. A retainer and guide member is removably secured adjacent a rear portion of the frame and includes a pair of outwardly extending guides. Each of the guides slidably fits within one of a pair of opposing inwardly facing longitudinal grooves. Each of the grooves is disposed along opposed inner surface portions of the slide for retaining and guiding the slide in generally parallel spaced relation to the frame. The pistol includes a second retainer and guide means adjacent the front end and includes, at least in part, a generally circular aperture in a depending front wall of the slide and wherein the muzzle end of the barrel extends through the aperture. The aperture has a predetermined chamfer to enable the slide to disassembled from the pistol after the first retainer has been disconnected from the frame.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: February 10, 1998
    Assignee: Smith & Wesson Corp.
    Inventor: Lee M. Lenkarski
  • Patent number: 5678342
    Abstract: An automatic pistol including a trigger safety which is pivotally mounted through the trigger guard to prevent the rearward movement of the trigger; a trigger bar with a ledge to engage a firing pin foot to move it in a rearward direction and an inclined edge in the ejector plate for engagement of the trigger bar wing for disengagement of the ledge in the trigger bar off the firing pin foot; a firing pin embodying a stepped chamber and containing within a spring mechanism for propelling the firing pin into the cartridge chamber.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: October 21, 1997
    Inventor: Edward Karl Felk
  • Patent number: 5675106
    Abstract: An automatic pistol adapted to repetitively fire blank ammunition includes a frame, a barrel unit supported by the frame and a slide unit reciprocally mounted on the frame between the forward and rear position. The barrel unit and/or frame incorporate structure which enables the pistol to operate in a highly reliable, repetitive manner without visible alteration to the pistol. A method for forming a blank firing pistol is also disclosed.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 7, 1997
    Inventor: Edward J. Leiter
  • Patent number: 5669169
    Abstract: The present invention is a handgun having a polymeric frame with metallic rails that are inserted within the frame after the frame has been formed by a molding process. The rails are inserted into recesses formed in a channel within the frame, before the frame has completely cooled and contracted. The rails comprise a pair of front rails and a pair of rear rails. The rear pair of rails are positioned within rear recesses and held in place by the sear block. The front pair of rails are positioned within front recesses and held in place by a plurality of metallic parts. The parts include a horseshoe, an unlock block, and a spreader block that are positioned between and matingly engage the front rails, thus securing them within their respective recesses.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: September 23, 1997
    Assignee: FN Manufacturing, Inc.
    Inventors: Edward P. Schmitter, Harold L. Miller, Milton W. Erickson, Gerald A. Thoe
  • Patent number: 5655326
    Abstract: A method is disclosed for placing a semiautomatic pistol, such as a Glock pistol (or any other type of pistol having a recoiling slide on a frame for both loading another cartridge from a magazine and cocking the trigger mechanism of the pistol), in a condition of absolute safety for deployment. That new condition is with a cartridge in the chamber of the pistol and its trigger mechanism uncocked. The method is carried out by separating the slide from the frame of an uncocked pistol, partially disassembling the slide to place a round on the breech face of the chamber and reassembling the slide with the chambered end of the barrel over the cartridge. The slide is then replaced on the frame by drawing it back over a spring-loaded slide lock. The trigger mechanism may then be cocked when the pistol is deployed by drawing the slide back an extent necessary and sufficient for that purpose without engaging a mechanism for loading another cartridge in the chamber.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: August 12, 1997
    Inventors: Israel Levavi, Beatrice Levavi