Shell Extractors Patents (Class 42/68)
  • Patent number: 8887427
    Abstract: An extractor for a self-loading firearm is mountable on a breech block and is formed of a body having a hook at one end. The body is pivotally mounted via a pivot pin. A surface is positioned between the pivot pin and the hook. The surface is divided into at least two surface portions offset from one another. One of the surface portions has a plurality of step surfaces offset from one another. The step surfaces are used to fix the bar dimension of the hook. The invention also encompasses a slide on which the extractor is mounted, as well as a self-loading firearm having the slide. A method of fitting the extractor to the pistol or slide is also disclosed.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: November 18, 2014
    Assignee: Smith & Wesson Corp.
    Inventors: Gary Zukowski, Seth Joubert
  • Patent number: 8733010
    Abstract: A rimless cartridge cylinder assembly is used for adapting revolvers which typically require the use of rimmed cartridges to accept rimless cartridges. The assembly includes an extractor mechanism having an extractor rod extending axially through a center passage provided in a cylinder having chambers adapted to receive cartridges. The extractor mechanism has an axially extendable extractor head assembly disposed at a cartridge loading end of the cylinder. The head assembly includes a plurality of spring biased projections housed therein which extend radially into engagement with corresponding grooves in rimless cartridges as they are loaded into each chamber. After discharge, rearward displacement of the head assembly allows the engaged projections to remove the spent cartridges from each chamber. Utilizing the rimless cartridge cylinder assembly, rimless cartridges typically used only with automatic hand guns can be loaded and fired in a revolver with long term reliably.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: May 27, 2014
    Assignee: Charter Arms
    Inventor: D Nickerson Ecker
  • Publication number: 20140059912
    Abstract: A rimless cartridge cylinder assembly is used for adapting revolvers which typically require the use of rimmed cartridges to accept rimless cartridges. The assembly includes an extractor mechanism having an extractor rod extending axially through a center passage provided in a cylinder having chambers adapted to receive cartridges. The extractor mechanism has an axially extendable extractor head assembly disposed at a cartridge loading end of the cylinder. The head assembly includes a plurality of spring biased projections housed therein which extend radially into engagement with corresponding grooves in rimless cartridges as they are loaded into each chamber. After discharge, rearward displacement of the head assembly allows the engaged projections to remove the spent cartridges from each chamber. Utilizing the rimless cartridge cylinder assembly, rimless cartridges typically used only with automatic hand guns can be loaded and fired in a revolver with long term reliably.
    Type: Application
    Filed: November 16, 2012
    Publication date: March 6, 2014
    Applicant: CHARTER ARMS
    Inventor: Charter Arms
  • Publication number: 20100192440
    Abstract: A polymeric revolver including a frame, a cylinder mounted in a rectangular aperture in the frame, a cylinder retaining mechanism and a cylinder releasing mechanism is provided. The cylinder retaining mechanism includes two assemblies: (1) an extractor, locking bolt and locking bolt retainer that house an extractor rod spring, and (2) a ratchet hub driver, hub drive center pin and central pin plate that house a ratchet drive spring. The two assemblies are biased toward one another forming a locking engagement of the extractor and the ratchet hub driver. The locking engagement is enhanced by a star-shaped configuration of grooves and ridges on the extractor and ratchet hub driver, respectively. The cylinder releasing mechanism includes a cylinder release lever that actuates the hub drive center pin and ratchet hub driver out of locking engagement with the extractor, and an ambidextrous thumb piece that facilitates access to the cylinder release lever.
    Type: Application
    Filed: April 15, 2010
    Publication date: August 5, 2010
    Applicant: SMITH & WESSON CORP.
    Inventor: Brett Curry
  • Publication number: 20100192441
    Abstract: A polymeric revolver including a frame, a cylinder mounted in a rectangular aperture in the frame via a yoke, and a cylinder retaining mechanism is provided. The cylinder retaining mechanism includes multiple assemblies, which lock the yoke in the cylinder-closed position, including: (1) an extractor, a locking bolt and a locking bolt retainer that house an extractor rod spring and engage a ratchet hub driver, hub drive center pin and central pin plate that house a ratchet drive spring; (2) a star-shaped configuration of grooves and ridges on the extractor and the ratchet hub driver, respectively; (3) a rear taper of the locking bolt that engages a concave recess at the axial center of the rounded groove of the locking bolt recess; and (4) an annular ring that engages an inner wall of an annular opening in a breach face of the frame.
    Type: Application
    Filed: April 15, 2010
    Publication date: August 5, 2010
    Applicant: SMITH & WESSON CORP.
    Inventor: BRETT CURRY
  • Patent number: 7380362
    Abstract: An extractor mechanism with improved reliability is provided having an extractor arm pivotally mounted within a pocket in a firearm slide. The extractor arm includes a body portion and a hook portion, the body portion being disposed within the pocket and the hook portion extending out of the pocket from an opening proximate to the breech face. The hook portion is biased toward the firearm's firing axis and includes a distal edge sized to engage a cartridge rim. The hook portion preferably has a height greater than the body portion and the portions are preferably connected by a curved portion. Two surfaces preferably meet at the distal edge of the hook portion, with the surface more proximal to the breech face being substantially parallel to the breech face and the surface more distant from the breech face, diverging from the breech face at an acute angle.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: June 3, 2008
    Assignee: Smith & Wesson Corp.
    Inventors: Brett Curry, Gary E. Zukowski
  • Patent number: 7263795
    Abstract: An extractor for the removal of cartridges from the cylinder bores of a revolver. The extractor includes an extractor plate having a plurality of arms extending radially outward from an inner portion of the plate. The arms form an inner surface between adjacent arms. The inner surface substantially conforms to the profile of a bore of the cylinder and has an arc length that is greater than one-half the circumference of a cartridge disposed within the cylinder bores of the revolver. The inner surface contacts the rim of a cartridge and facilitates the removal of the cartridge from the bore. The inner surface may also include a beveled edge and the arms may have convex or concave end portions. The extractor also includes a tubular stem mounted to the inner portion of the extractor plate.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: September 4, 2007
    Assignee: Smith & Wesson Corp.
    Inventor: Brett Curry
  • Patent number: 5768815
    Abstract: The present invention relates to an extractor for a firearm which incorporates internal extraction to withdraw a cartridge from the chamber of the firearm. The extractor includes an outwardly extending lip for engagement in a cavity defined in the rear of the cartridge. The cavity includes an inwardly extending flange and the lip of the extractor is positioned behind the flange during extraction. The extractor includes a first pivot point about which the extractor rotates in order to allow the extractor lip to enter the cartridge cavity. The extractor also includes a second pivot point about which the extractor exerts a positive rotational force to extract the cartridge from the chamber.
    Type: Grant
    Filed: July 16, 1996
    Date of Patent: June 23, 1998
    Inventor: Richard J. Casull
  • Patent number: 5727345
    Abstract: A semiautomatic firearm having a rotating cylinder is provided. The cylinder has a plurality of chambers adapted to receive a cartridge and is rotatingly supported in a housing by a cylinder pin whereby each of the chambers of the cylinder is positionable in one of a loading position, a firing position, and an ejecting position. The cylinder pin is reciprocally movable between a retracted position wherein the cylinder pin is disengaged from a firing mechanism and an extended position wherein the cylinder pin engages the firing mechanism so as to cock the firing mechanism. The cylinder pin is movable from the retracted position to the extended position in response to gas pressure generated by the firing of a cartridge disposed in the chamber of the cylinder positioned in the firing position acting on the cylinder pin so as to move the cylinder pin from the retracted position to the extended position.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: March 17, 1998
    Assignee: Hotshot, Inc.
    Inventor: Robert Sullivan
  • Patent number: 5659992
    Abstract: A single shot falling breech block action that includes an upper receiver assembly, a lower receiver assembly, breech block assembly, a trigger assembly, a stationary rack, a movable rack, a pinion, an action plate, and pinion rotating apparatus.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: August 26, 1997
    Inventor: Bernard J. Mistretta
  • Patent number: 5341587
    Abstract: An extractor and positioner mechanism is provided for revolvers or like weapons. An increased area contact surface is provided for enhancing the positioning and extraction or ejection functions. The mechanism also allows proper seating in the chamber for rimmed and rimless cartridges. Loading of cartridges into chambers in the revolvers is also made easier.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: August 30, 1994
    Assignee: Phillips and Rodgers, Inc.
    Inventor: Jonathan W. Phillips, Jr.
  • Patent number: 5220115
    Abstract: A revolver is provided with two cylinders, each of which is alignable in a firing position, a storage position, or a loading position. The cylinders are carried by a crane that pivots to orient the cylinders in a selected one of the above three positions. When one cylinder is in the firing position, the other cylinder will be in the storage position. A cartridge retaining ring secures cartridges within a cylinder as the cylinder travels from the storage position to the firing position. An ejector mechanism is provided on each cylinder to expel spent cartridges from cylinder chambers. Advantageously, the two cylinders can be loaded with two different types of ammunition.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: June 15, 1993
    Inventors: John Wales, Murry I. Rozansky
  • Patent number: 5218148
    Abstract: An extractor for the removal of cartridge cases from the chambers of a revolver is mounted adjacent the outer end of a tubular stem. The extractor is in the form of a plate having a plurality of radially extending arms equally spaced apart and defining, between each adjacent pair of the arms, a cylindrical surface which conforms with the inner cylindrical surface portion of one cartridge chamber of the revolver cylinder. The outer edge portion of each of the arms is generally a rectilinear edge and together define a rectangular shape having its geometric center aligned with the longitudinal axis of the stem. The revolver cylinder includes a recess in the rear surface of the cylinder which has a depth approximately equal to the thickness of the extractor plate and includes inner, rectilinear edge portions contiguous to and parallel with each of the outer edge portions of the extractor arms to limit rotation of the extractor plate relative to the axis of the cylinder.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: June 8, 1993
    Assignee: Smith & Wesson Corp.
    Inventor: Richard J. Mochak
  • Patent number: 4934082
    Abstract: The cylinder of a revolver has a recess in its rear face through which the chambers pass and which is surrounded by a shoulder. In the base of this recess is a second recess in which is received an extractor star carried by the ejector rod and itself carrying a cylindrical member having the ratchet thereon. Within the first recess there is a steel clip which carries the cartridges. The clip is of substantially the same thickness as the depth of the recess, and has a plurality of arms radiating from the central portion to form generally circular openings each subtending an angle in excess of 180.degree. at its centre. Each arm is split along a line running substantially radially of the central portion to permit the arm to flex for the purpose of inserting the cartridges into the openings.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: June 19, 1990
    Assignees: Lawrence Haar, John Galgut
    Inventor: Istvan J.-K. D. C. Laendler
  • Patent number: 4771561
    Abstract: A revolver uses removable cylinders for fast reloading and has cylinder fastening elements which permit reloading of the revolver only when a revolver hammer is in an uncocked position. The revolver cylinders have, in their rear ends, cartridge holding elements which prevent cartridges from falling out of the cylinders when the cylinders are outside of the revolver frame.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: September 20, 1988
    Inventor: Shimon Waiser
  • Patent number: 4720930
    Abstract: Modifications are provided in the structure of firearms such as breech-loading revolver handguns. Traditionally, these firearms are constructed with mating surfaces in face to face contact, which surfaces must be separated for loading. Where foreign particles are trapped between the flat mating surfaces on closing, jamming results. In one aspect of the invention, these flat mating surfaces are provided with cavities, so that any such foreign matter will fall into the cavities and not prevent the closing of the firearm mechanism after loading. In another aspect of the invention, a series of small vee-type notches, discernible by touch, are formed around the rear edge of a rotary magazine of cartridge cylinder, in a descending sequence in direction opposite to the operative direction of rotation of the rotary magazine when in battery.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: January 26, 1988
    Inventor: Paris H. S. Schreiber
  • Patent number: 4694602
    Abstract: A simplified revolver handgun comprises an interacting trigger and hammer mechanism which in their normal movements cause a transfer rod to move linearly inside the extractor assembly of the cylinder, the transfer rod having on its outside surface a network of grooves which mate with an inwardly directed protrusion in the bore of the extractor assembly, the network being a repeating series of cam action sections, each section including a location for firing when said hammer and a cartridge are aligned, and a location when the hammer rests in close proximity to the cylinder but between adjacent cartridges in a nonfiring position.
    Type: Grant
    Filed: June 17, 1986
    Date of Patent: September 22, 1987
    Inventor: Klaus O. M. Pust
  • Patent number: 4543741
    Abstract: An ejecting mechanism for revolvers having a cylinder with a movable axle longitudinally mounted on the longitudinal axis of the cylinder. The axle has outwardly and upwardly inclined casing contacting arms formed of light spring material. A ratchet plate is detachably mounted on the end of the axle for revolving the cylinder of the gun.
    Type: Grant
    Filed: June 21, 1982
    Date of Patent: October 1, 1985
    Inventor: Jonathan W. Phillips, Jr.
  • Patent number: 4541193
    Abstract: An improved cylinder and extractor assembly for use in a revolver comprising a cylinder having a central longitudinal chamber and a plurality of longitudinal cartridge chambers at uniformly spaced intervals thereabout and including radial slots at the rear of the cylinder providing communication between the central chamber and each of the cartridge chambers. An extractor assembly, centrally disposed in the central chamber, includes an extractor member having circumferentially spaced radial projections each one of which may be disposed in one of the radial slots at the rear of the cylinder for engagement with the groove of a cartridge. The extractor member is axially movable from a first position, within the central chamber to a second position substantially rearwardly of the central chamber, to force cartridges from the cartridge chambers.
    Type: Grant
    Filed: January 19, 1984
    Date of Patent: September 17, 1985
    Inventor: George F. Flippin
  • Patent number: 4206560
    Abstract: A revolver of the swing-out cylinder type is provided with an improved ejector means the longitudinal travel or stroke of which is appreciably greater than that of conventional ejector means. The ejector means has a cartridge ejector portion for engaging the rims of cartridges contained in the chambers of the cylinder of the revolver and a generally tubular ejector guide portion slidably mounted on the rearward end of the cylinder and extending forwardly into the longitudinal center bore of the cylinder pivot shaft. The ejector spring that urges the ejector means to its normal forwardmost position has an outer ejector spring section disposed within the annular space between the tubular guide portion of the ejector means and the center bore of the cylinder pivot shaft and an inner ejector spring section of smaller diameter than the outer ejector spring section disposed on the rearward end of the ejector rod.
    Type: Grant
    Filed: November 14, 1978
    Date of Patent: June 10, 1980
    Assignee: Sturm, Ruger & Co., Inc.
    Inventor: Harry H. Sefried, II
  • Patent number: 4168589
    Abstract: A hand gun has a cylinder, a chamber in the cylinder for holding a shell casing, an extractor rod extending through the cylinder adjacent the chamber, an extractor on an end of the extractor rod normally held in a closed position adjacent the chamber, and a return spring around the extractor rod for normally biasing the extractor into its closed position. The extractor normally can slide the casing entirely out of the chamber in response to travel of the extractor rod. A safety bushing is secured around a portion of the extractor rod, and the return spring is biased against the safety bushing. The safety bushing reduces the travel of the extractor rod which, in turn, limits the distance that the extractor can move the shell casing out of the chamber.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: September 25, 1979
    Inventor: Leonard A. Tiritilli
  • Patent number: 4127955
    Abstract: Disclosed is an extractor assembly including an extractor rod splined within a revolver cylinder and carrying spring leaf extractor segments in elongated grooves about its outer surface. The segments are prebent and biased in the assembly to displace extractor tips carried thereby radially outwardly. When the extractor assembly is fully seated within the revolver cylinder, cam surfaces on the cylinder maintain the extractor tips spaced radially inwardly of the cylinder chambers. Upon axial displacement of the extractor assembly, the extractor tips, under the natural bias of the segments, move radially outwardly into the grooves of the cartridge casings whereby the tips displace the casings rearwardly from the cylinder chambers. Upon spring return of the extractor assembly into the cylinder, the extractor tips are cammed radially inwardly and out of the chambers enabling the cylinder to be loaded.
    Type: Grant
    Filed: May 18, 1977
    Date of Patent: December 5, 1978
    Assignee: Bangor Punta Operations, Inc.
    Inventor: Roger J. Curran
  • Patent number: 4015356
    Abstract: Revolver cylinder provided with a mechanism for the ejection of rimless cartridge casings, and a revolver incorporating such cylinder. The ejector has a head with a plurality of part-circular cutout portions which are disposed in alignment with the chambers in the cylinder. Each of such cutout portions in the head has a peripheral groove in which there is disposed a generally part-circular leaf spring which is adapted to fit within the annular groove in the rear end of the cartridge casing and to engage the casing at two diametrically opposed zones.
    Type: Grant
    Filed: June 10, 1975
    Date of Patent: April 5, 1977
    Assignee: Manufacture de Machines du Haut-Rhin S.A.
    Inventor: Gilbert Maillard
  • Patent number: 3982346
    Abstract: An ejector for ejecting catridge cases from the cylinder of a revolver, comprises a pin for which the center of the revolver cylinder serves as a guide. A star-shaped disc is secured to this pin; and a flexible annular element whose outer edges are smoothed off, projects slightly from the bottom of each of the notches in the star-shaped disc. The annular element is secured to the disc against removal from the disc in a direction lengthwise of the pin; but the annular element can retract into the notches, so that when rimmed cartridges are introduced into the chambers of the revolver cylinder, the annular element retracts into the notches and slides along the cartridges. But when grooved cartridges are introduced into the cylinder chambers, the annular element retracts into the notches as the cartridges pass but projects again and penetrates into the cartridge grooves as soon as the cartridge grooves are situated in front of the annular element.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: September 28, 1976
    Inventor: Andre Pilorget