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51. 发明授权

US3859745A Hunting gun with floating bolt provided with a device for locking the bolt head in the bolt breech upon firing 失效
标题翻译：带有浮动螺栓的冲击枪，用于锁定螺栓上的螺栓头部的设备
公开(公告)号：US3859745A
公开(公告)日：1975-01-14
申请号：US37960473
申请日：1973-07-16
申请人： BENELLI SPA
发明人： BENELLI GIOVANNI
IPC分类号： F41A3/00 , F41A3/32 , F41C11/06 , F41D3/06
CPC分类号： F41A3/32
摘要： The hunting gun has a bolt assembly comprising two parts, namely a locking head and a floating element with a spring interposed between the two parts. The locking head comprises essentially one or more projections adapted to engage corresponding recesses in the cylindrical internal surface of the breech and a surface inclined with respect to the breech axis and adapted to engage a mating surface of the floating element. Upon firing the gun recoils but the floating element, being free in the gun, tends to keep its position and keeps the locking head with its projections in engagement with the grooves in the breech. Thus, there is a delay in the opening of the cartridge chamber, which prevents unlocking of the gun in the charge explosion step, i.e. at the time of greatest gas expansion. When the recoil force has decreased to a predetermined extent the spring pushes back the floating element which slides with its inclined surface on the mating surface of the locking head permitting the latter to lower and disengage its projections from the recesses in the breech so that the locking head can also recoil under the action of the residual force of the spring.
摘要翻译：猎枪具有螺栓组件，其包括两部分，即锁定头和浮动元件，弹簧插入在两个部件之间。锁定头基本上包括一个或多个凸起，其适于接合后膛的圆柱形内表面中的对应凹部和相对于后膛轴线倾斜的表面，并且适于接合浮动元件的配合表面。在射击时，枪反弹，但是在枪中自由的浮动元件倾向于保持其位置并且使其锁定头保持其突起与后膛中的凹槽接合。因此，盒室的打开有延迟，这阻止了充电爆炸步骤中枪的解锁，即在气体膨胀最大的时候解锁枪。当反冲力已经降低到预定程度时，弹簧推回浮动元件，该浮动元件以其倾斜表面滑动在锁定头的配合表面上，从而允许后者将突起从后膛中的凹部下降并脱离，使得锁定在弹簧的剩余力的作用下，头也可以反冲。

52. 发明授权

US3292363A Explosively-operated tool 失效
公开(公告)号：US3292363A
公开(公告)日：1966-12-20
申请号：US34128264
申请日：1964-01-30
申请人： AMP INC
发明人： WILLIAM WAHL FREDERICK
IPC分类号： B25B27/00 , F41A3/00 , H01R43/027
CPC分类号： H01R43/0275 , B25B27/0085 , F41A3/00

53. 发明授权

US10330410B2 Automatic/semi-automatic rifle assembly for large caliber belted cartridges 有权
公开(公告)号：US10330410B2
公开(公告)日：2019-06-25
申请号：US14479218
申请日：2014-09-05
申请人： Guardian Defense, LLC
发明人： Brandon W. Miller , Dean G. Grommet , Joshua R. Boyce
IPC分类号： F41A9/34 , F41A9/61 , F41A3/36 , F41A3/00 , F41A9/29 , F41A9/79 , F41A19/13 , F41A5/18
摘要： Embodiments of the present disclosure provide modifications to the AR platform operating system such that the platform now is competent to fire large caliber cartridges, including belted cartridges, providing longer range and greater barrier penetration without substantially altering the characteristic features and component inter-relationships of this platform.

54. 发明授权

US10222149B2 Firearm upper receiver positioning mechanism 有权
公开(公告)号：US10222149B2
公开(公告)日：2019-03-05
申请号：US15491427
申请日：2017-04-19
申请人： Sig Sauer, Inc.
发明人： William C. Daley, Jr.
IPC分类号： F41A3/00 , F41A3/66 , F41A11/00
摘要： A firearm having a lower receiver including a takedown pin through hole and an upper receiver configured to receive the lower receiver. The upper receiver including a rear lug and the rear lug including a bore and a screw disposed in the bore. A takedown pin having a cam surface such that the upper receiver is drawn to the lower receiver as the takedown pin is inserted in the takedown pin through hole and the bore of the rear lug.

55. 发明授权

US10054391B1 Handgun grips and insert 有权
公开(公告)号：US10054391B1
公开(公告)日：2018-08-21
申请号：US14298960
申请日：2014-06-08
申请人： Robert Neale Lyman
发明人： Robert Neale Lyman
IPC分类号： F41C7/00 , F41C3/00 , F41A3/00 , F41A5/00 , F41A9/00 , F41C23/10
CPC分类号： F41C3/00 , F41A3/66 , F41A9/55 , F41C23/10
摘要： An insert for repair or increase durability of 1911-style firearms is disclosed. In addition, a grip modification particularly suited for concealed carry is disclosed.

56. 发明授权

US09915490B2 Firearm with an improved arming member 有权
公开(公告)号：US09915490B2
公开(公告)日：2018-03-13
申请号：US15306853
申请日：2015-05-20
申请人： FABBRICA D'ARMI PIETRO BERETTA S.P.A.
发明人： Claudio Gentilini , Giovanni Prandini
IPC分类号： F41A3/00 , F41A17/72 , F41A19/10 , F41A19/32
CPC分类号： F41A17/72 , F41A19/10 , F41A19/32
摘要： A firearm (1) comprising a firing mechanism. (600) comprising a trigger (601), a firing pin (6), a locking element (7) of the firing pin (6). The firearm comprises an arming device (10) comprising transmission means (50) connected to the trigger (601) and an arming member (100) comprising a plurality of engagement elements (151, 156, 157) suitable for engaging the transmission means (50) and/or the firing pin (6) and/or the locking element (7). The arming member (100) comprises: a) a firing pin operating body (110) for engagement with the firing pin (6); b) a lock operating body (120) for engagement with the transmission means (50) and with the locking element (7) of the firing pin (6), wherein the firing pin operating body (110) is engageable in rotation by the lock operating body (120) to be moved in rotation.

57. 发明授权

US09897404B2 Recoil spring for a firearm 有权
公开(公告)号：US09897404B2
公开(公告)日：2018-02-20
申请号：US15215582
申请日：2016-07-20
申请人： WHG Properties, LLC
发明人： William H. Geissele
IPC分类号： F41A3/00 , F41A3/86 , F41A3/54 , F41A3/66
CPC分类号： F41A3/82
摘要： A firearm includes a receiver for housing a trigger mechanism. The receiver is attached to a firearm barrel, and the receiver includes a bolt carrier that is configured to reciprocate therein. The firearm includes a recoil spring that has a first end and a second end, and the first end interfaces with the bolt carrier. The recoil spring further includes a dampened portion positioned between the first and second ends. The dampened portion has a plurality of dead spring coils. The firearm also includes a spring retainer that is configured to retain the recoil spring within the firearm.

58. 发明授权

US09791223B2 Firearm with pivoting barrel-receiver assembly 有权
公开(公告)号：US09791223B2
公开(公告)日：2017-10-17
申请号：US15093966
申请日：2016-04-08
申请人： Sturm, Ruger & Company, Inc.
发明人： David Anderson , Joseph J. Cramer , Dwight Potter
IPC分类号： F41A3/00 , F41C7/00 , F41A3/58 , F41A3/66 , F41A21/48 , F41A17/56
CPC分类号： F41A3/58 , F41A3/66 , F41A17/56 , F41A21/488
摘要： A firearm with tilting barrel-receiver assembly includes a frame and a barrel-receiver assembly pivotably mounted to the frame. The barrel-receiver assembly is movable between an open position and a closed position. A latching mechanism includes a latch that selectively engages the barrel-receiver assembly. The latching mechanism may be disposed in the frame in one embodiment. The latching mechanism is movable between a locked position wherein the barrel-receiver assembly is held in the closed position and an unlocked position wherein the barrel-receiver assembly is movable to the tilted open position. The latch may be spring biased into the locked position. The barrel-receiver assembly may be configured for complete removal from the pistol in some embodiments. An interlock mechanism formed by a movable safety may be provided which prevents the barrel-receiver assembly from being unlocked when the firearm is in a ready-to-fire condition.

59. 发明授权

US09664471B1 Firearm end cap 有权
公开(公告)号：US09664471B1
公开(公告)日：2017-05-30
申请号：US15146954
申请日：2016-05-05
申请人： Smith & Wesson Corp.
发明人： Brett Curry , Sean O'Clair
IPC分类号： F41A3/00 , F41A19/30 , F41C3/00 , F41C27/00 , F41A3/72
CPC分类号： F41A19/30 , F41A3/72 , F41C3/00 , F41C27/00
摘要： An end cap for a semiautomatic pistol is mounted at the breech end of a slide to maintain the striker assembly in place when subject to inertial loads. The end cap includes a body with a base and a cover. A metal plate is mounted between the base and cover to prevent striker blow-out in the event that a primer is pierced. Flexible, resilient projections extend from the base and engage the slide within a recess, the projections extending transversely to the firing axis to counter inertial forces that might otherwise dislodge the end cap and cause a stoppage.

60. 发明授权

US09664467B2 Gas key 有权
公开(公告)号：US09664467B2
公开(公告)日：2017-05-30
申请号：US13717335
申请日：2012-12-17
申请人： Marc Christenson
发明人： Marc Christenson
IPC分类号： F41A3/00 , F41A5/18
CPC分类号： F41A5/18
摘要： An improved gas key assembly for a fire arm, such as an AR 15 or a M4 rifle, having a gas key fastened by fasteners on a bolt carrier assembly where the gas key moves with the bolt carrier when the fire arm is fired, wherein the gas key has a slot for receiving a key element in the slot and the key element has a stem which is seated in the slot and a rail which overlays the fasteners to removably secure the gas key to the bolt carrier and holds gas key resisting unintended separation of the gas key from the bolt carrier. Also the invention includes a method for securing a gas key to a bolt carrier in such a fire arm.

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