| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Extractor assembly for a semi-automatic handgun | US10367682 | 2003-02-19 | US06851212B2 | 2005-02-08 | Atilla Szabo |
| A system and method for extracting a round of ammunition from a semi-automatic handgun having a slide with an opening are provided. An extractor assembly includes a first member configured to be disposed in the opening of the slide such that the slide encloses the first member. A second member has a portion configured to engage a round of ammunition. The second member is configured to pivot relative to the first member. A joint may connect the first member with the second member to allow the second member to pivot relative to the first member to thereby engage the round of ammunition. In addition, a spring may be provided to bias the second member into engagement with the round of ammunition. | ||||||
| 142 | Bolt assemblies for firearms | US10265638 | 2002-10-07 | US06609319B1 | 2003-08-26 | Douglas D. Olson |
| New and improved bolt assemblies for M4/M16 firearms capable of firing a remarkably greater number of rounds than previously available M4/M16 firearms are, disclosed that have right and left compression springs that are parallel to each other, straddle the firing pin bore and are retained in partial bores that have proximal and distal ramps descending from their open ends. Additionally, these bolt assemblies advantageously (A) have the extractor pivot pin receiving lug is positioned at the longitudinal center of the mass of the extractor, (B) walls of bolt lugs on the firearm bolt are angled tangent to full radius fillets joining adjacent bolt lugs, (C) the extractor contains a ceramic ball and a captive rubber spring to bias such ball against the extractor pivot pin to retain it in the receiving lug and (D) lugs on the barrel extension are angled tangent to substantial radius fillets joining them. | ||||||
| 143 | Arrangement for opening the dust flap of a firearm | US09916911 | 2001-07-27 | US20020073592A1 | 2002-06-20 | Johannes Murello; Helmut Weldle |
| An apparatus is provided for use in a firearm having a housing defining a first ejection opening and a second ejection opening. The apparatus includes first and second dust flaps mounted adjacent the first ejection opening for movement between an opened position and a closed position. The apparatus also includes a bolt assembly adapted to be selectively mounted in a first assembly position and a second assembly position for longitudinal movement within the housing. When the bolt assembly is in the first assembly position, a longitudinal movement of the bolt assembly moves the first dust flap to the opened position and, when the bolt assembly is in the second assembly position, the longitudinal movement of the bolt assembly moves the second dust flap to the opened position. | ||||||
| 144 | Bolt assembly for a firearm | US09911008 | 2001-07-23 | US20020026739A1 | 2002-03-07 | Johannes Murello; Helmut Weldle |
| A bolt assembly for use in a firearm is disclosed which is movably arranged in a weapon housing and which includes a bolt carrier and a bolt head. The bolt head can be alternately inserted in at least two positions in the weapon housing to adapt the firearm to eject spent cartridge casings in a desired direction. The bolt assembly also includes an extractor which is fastened laterally on the bolt or bolt head for withdrawing a cartridge casing from a barrel of the weapon housing during return of the bolt assembly, and an ejector integrated in the bolt mechanism which removes the cartridge casing from the bolt assembly after extraction from the barrel. | ||||||
| 145 | Cartridge extractor | US854833 | 1997-05-12 | US5794373A | 1998-08-18 | Kook-Jin Moon |
| A firearm having a frame and a slide supported for movement on the frame between battery and retired positions. The slide has an ejection port and a slot longitudinally extending from the ejection port for supporting a cartridge extractor such that upper and lower surfaces of the extractor are in sliding contact with a lower and upper surfaces of the slot, respectively. A recess in the upper surface of the extractor is in communication with a recess in the lower surface of the extractor via a passage extending therebetween. One of the recesses is in communication with the ejection port and the other recess is in communication with the exterior of the slide to provide a passageway for the transport of propellant combustion products from the interior of the slide to the exterior of the slide. | ||||||
| 146 | Bolt action rifle | US367886 | 1989-06-19 | US4920677A | 1990-05-01 | Dale E. Schuerman |
| A bolt action rifle having a flange projecting from a ring captured between the barrel and the receiver, the flange mating with the undercut in the bolt needed to pass the cartridge during loading into the grip of the extractor to achieve controlled round feeding, the flange serving to support the cartridge during detonation in the area of the cartridge which otherwise would be unsupported.The mating of the flange with the undercut of the bolt requires a non-rotating bolt. An inner bolt sleeve is provided, axial movement thereof serving to control rotating locking lugs at the front of the bolt which lock the bolt during detonation. | ||||||
| 147 | Apparatus for ejection of empty cartridge cases from an automatic firing weapon | US818228 | 1986-01-13 | US4676017A | 1987-06-30 | Ernst Hurlemann; Werner Bosshard; Werner Stauffacher |
| Before the empty cartridge case is ejected it is extracted from the cartridge chamber of the weapon barrel by an extractor and subsequently tilted by an ejector. During this operation large forces are exerted on the pivotably mounted extractor. It has been found that when high cadence firing takes place the spring forces are too small to hold the extractor reliably. Therefore, the extractor is secured by a support lever or by a locking pawl against inadvertent pivoting during the removal of the cartridge case. Preferably a support lever or support slide is arranged in the breechblock to prevent premature tilting of the cartridge case. | ||||||
| 148 | Firearm bolt action and extractor | US706877 | 1985-02-28 | US4653210A | 1987-03-31 | Charles R. Poff, Jr. |
| This invention relates to a firearm and more particularly to a firearm having a bolt action in which a bolt is arranged for axial and rotational movement in a receiver and an extractor system operable in combination with the movement of the bolt relative to the bolt receiver. The bolt includes lugs having a locking surface which engages a locking wall formed on a cooperating lug on the receiver when the bolt is in the firing position. Both the locking surface and locking wall are arranged at cooperating angles and are conically shaped so as to insure that the axis of the bolt and receiver will be concentric when the bolt is locked in the firing position. In the event of a cartridge rupture the angle of the locking wall causes some of the forces generated by the rupture to be diverted at an angle from the axis, thereby minimizing the shearing stresses on the receiver lugs. The extractor includes a portion arranged as part of the bolt locking surface so that the extractor is mechanically held relative to the bolt when the bolt is in the firing position. | ||||||
| 149 | Combined ejector-rammer for small arms | US730214 | 1985-05-03 | USH211H | 1987-02-03 | William E. Vanderbeck |
| This combined ejector-rammer, or ejectomer, is a single mechanical device ich performs the functions of both an ejector and a rammer for small arms which use cartridge type ammunition. An ejectomer lever is attached to the side of the weapon's bolt by means of a pair of pins and a spring. The pins move in elongated slots in the lever, one of which is linear and the other L-shaped. The forward end of the lever acts as a rammer to push each fresh round up a ramp into the firing chamber. After firing, a conventional extractor removes the spent cartridge case from the chamber and as the spent case moves down the ramp, the spring and the pins cause the lever to move in such a way that the extracted case is ejected. | ||||||
| 150 | .22 caliber rimfire adapter system for M16 type rifle | US840470 | 1977-10-07 | US4617749A | 1986-10-21 | Julius V. Jurek |
| A unitary bolt and chamber adapter for field replacement, without tools, of the conventional bolt assembly of rifles of the type M16 and AR-15 provides for the use of conventional .22 caliber long rifle rimfire ammunition in the rifle instead of the larger conventional centerfire ammunition. The bolt functions in semiautomatic fire by conventional blowback action. Through cooperation with an improved .22 caliber rimfire magazine adapter, the breech automatically remains open after firing the last round from the magazine. The bolt guide rails are flexibly attached to the chamber providing for reliable operation in a larger number of rifles. A spring actuated forward locator on the bolt assembly keeps the adapter seated in the rifle chamber, compensating for differences in gun receiver lengths. An undercut bolt face provides the positive extraction of a double extractor system with a single extractor, and a groove-and-land chamber adapter provides reliable operation with good and poor quality ammunition. A gas diverter protects the rifleman's eyes and provides a clean receiver without modifying the original gun. | ||||||
| 151 | Reversible bolt for firearms | US290857 | 1981-08-07 | US4440062A | 1984-04-03 | Sidney J. McQueen |
| A reversible front bolt for converting a firearm of a first caliber to fire cartridges of a second caliber; or to provide a second front bolt of the same caliber as a spare part. The regular bolt assembly comprises a front bolt, a plurality of rails and a rear bolt, wherein the rails connect, and rigidly position the front bolt with respect to the rear bolt. The front bolt has two firing faces, and to change from one firing face to the other, the rails are disconnected from the front bolt, the front bolt reversed and the rails reconnected to the front bolt. | ||||||
| 152 | Programmed shell casing ejector apparatus for automatic cannon | US24184 | 1979-03-27 | US4269108A | 1981-05-26 | Eugene M. Stoner |
| A programmed shell casing ejector apparatus, for an automatic cannon having an axially reciprocating bolt assembly, includes an ejector member axially slidably mounted to the bolt assembly, a pair of cam tracks symmetrically fixed to a cannon mount, and a corresponding pair of cam track followers pivotally mounted to the bolt assembly to engage the ejector member and, as the bolt assembly recoils, the cam tracks. Ejection through an ejection port of a fired shell casing, held to a bolt face by an extractor, is caused when the ejector member is moved forwardly relative to the recoiling bolt assembly by the cam track followers as the followers move along the cam tracks. Timing and velocity of the shell casing ejection is programmed, to prevent cannon malfunction or jamming due to improper ejection or casing damage, by configuring the cam tracks and followers so that the ejector member moves forwardly relative to the bolt assembly at controlled, increasing velocity preselected to be substantially less than recoil velocity of the bolt assembly. | ||||||
| 153 | Firearm shell extractor | US865198 | 1977-12-28 | US4163334A | 1979-08-07 | James Tollinger |
| In the embodiment of the invention described in the specification, a shotgun includes a bolt containing a slidable firing pin and a spring urging the firing pin away from the breech of the barrel. A shell extractor pivotally supported in the bolt has a retainer which is urged forwardly by the firing pin spring. | ||||||
| 154 | Breech mechanism for guns | US43599474 | 1974-01-23 | US3882625A | 1975-05-13 | TELLIE PAUL EMILE FRANCOIS |
| A breech mechanism for a gun having an extractor which can engage an ammunition casing to effect withdrawal of the casing and ejection of the casing laterally of the gun. To provide for rightwards or leftwards ejection of a casing from the gun as desired, the mechanism is provided with two housings to form a pair of locations in which the extractor can be positioned. One location provides for ejection of the casing to one side of the gun and the other location provides for ejection to the other side of the gun when the extractor is positioned in the one or the other location. In one embodiment, the extractor is mounted in a part of the breech mechanism and is rotated between the two locations; and in other embodiments the extractor can be removed manually from one housing and inserted in another housing.
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| 155 | Automatic hand gun | US3780618D | 1971-05-20 | US3780618A | 1973-12-25 | SANFORD H |
| This invention relates to a recoil-actuated automatic hand gun, which provides for utilizing a maximum sized cartridge in a hand gun system. The reactive thrust as the bullet leaves the muzzle of this gun causes a barrel, barrel extension, receiver, and bolt to slide back locked together a set distance during initial motion until the bullet leaves the bore of the gun, and the gas pressure decreases to a level low enough to permit the safe unlocking of a locked breech action. The sliding receiver reaches its limit of travel and hits a portion of the frame of the pistol. A through-slot in the bolt bears cam surfaces which rotate the bolt out of breech-locking splines in the breech action thereby to release the bolt from engagement with the receiver and permit the inertia of the bolt to carry it backwards to perform ejection, cocking, and the loading of a new cartridge. In order to replace some of the dissipated energy and to increase the speed of travel of the bolt to load spring-return mechanisms, and to perform the functions of the bolt with the speed required, a rotary, mechanical accelerator forms a part of the action and imparts a blow to the bolt at the time that the receiver reaches its stop position. The bolt is rotated out of the breechlocked position by balanced cam follower means fixed to the frame that follow the cam surfaces, and upon return to the breechlocked lock position, the entire assembly travels as a unit to the battery position with a loaded cartridge in the chamber. A safety tappet pin engages a spiral groove in the bolt to prevent premature firing before the action has reached an appropriate position. The bolt is adapted with unique ejection means, which ejects the spent cartridge case forward and away from the shooter''s head and face.
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| 156 | Rifle conversion assembly | US3771415D | 1972-02-07 | US3771415A | 1973-11-13 | INTO H; COSTELLO R |
| An assembly is provided for converting a firearm of standard caliber to one of a smaller caliber and includes a conversion chamber adaptor with a bolt mounted for movement between recoil and battery positions. A backplate damper assists in maintaining the operating components in assembly and absorbs recoil impact energy of the recoiling mass upon firing of the weapon. When the conversion assembly is installed in a weapon having a buffer disposed rearwardly of its chamber, the backplate damper additionally serves to transmit that energy to the buffer.
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| 157 | Machine gun | US3756119D | 1971-12-14 | US3756119A | 1973-09-04 | CURTIS G; TATRO H |
| The machine gun of this invention features a unitary bolt and bolt drive assembly reciprocably mounted within a receiver along three longitudinally extending bearing supports symmetrically arranged in spaced relation to the receiver; the bolt and bolt drive assembly, together with a recoil buffer constituting an integral operating group removably maintained within the receiver by a single latch mechanism; a bolt carrier of the assembly incorporating actuating means for cartridge belt advance, cartridge extraction and ejection; the bolt carrier housing not only a rotary, front-locking bolt but also a cam follower which fixes a firing pin to the carrier and moves within a contoured slot in the bolt for locking and unlocking it in battery. This machine gun also features a gas recoil system for the bolt and bolt drive assembly having anti-fouling porting means for purging gas from the system under high pressure after firing; an ejector operated by the recoiling bolt and bolt drive assembly independently of its velocity; an automatically engageable, selfaligning barrel and receiver latch construction; and a sight assembly featuring a zero backlash precision screw adjustment means.
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| 158 | Rifle bolt action | US3745686D | 1971-04-07 | US3745686A | 1973-07-17 | KOON H |
| A rifle bolt action that employs a multi-sided bolt for being carried within a cylindrical channel of a receiver. Only a small portion of the surface area of the bolt contacts the channel of the receiver, thus minimizing friction. The multi-sided bolt provides substantial space between the bolt and receiver within which dirt and grit can collect to prevent binding of the bolt within the receiver.
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| 159 | Obturated firearm breech safety device | US3738224D | 1971-11-23 | US3738224A | 1973-06-12 | POST J; REED F |
| In a firearm comprising a reciprocating bolt, the pin for retaining the extractor against rotation in the nose thereof is adapted to be blown radially from the firearm through a cooperating passage responsive to excessive gas pressure in the barrel for release thereof. In an alternate embodiment the tubular body of the extractor is thinned down where coincident with the inner mouth of the passageway so as to be rupturable by excessive gas pressure for release thereof through the passageway.
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| 160 | Rammer and extractor assembly for telescopic rounds | US3680242D | 1970-07-24 | US3680242A | 1972-08-01 | WIESE HAROLD H |
| In cooperation with a caseless round of telescopic configuration, a longitudinally reciprocating plunger responsive to forward travel thereof moves the round projectile forwardly in the body member for insertion into the barrel bore for discharge. The plunger carries a firing pin which is spring-biased to a forward round impacting position and is driven rearwardly responsive to discharge gas pressure. A latch pivotally carried by the plunger is pivoted by the striker portion of the firing pin into engagement with a flange formed on the rear end of the projectile when the firing pin goes into its forward position and is held in engagement with the flange if the round fails to discharge thereby maintaining connection between the projectile and the plunger for withdrawal of the projectile back into the body member during rearward travel of the plunger.
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