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US 4,502,367 AGranted
Firearms bolt carrier assembly
AssigneeChartered Industries of Singapore Private Limited
InventorLeroy J. Sullivan
Life of this patent
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AssigneeChartered Industries of Singapore Private Limited
InventorLeroy J. Sullivan
Estimating the term…
A bolt carrier assembly has a housing (300) for supporting a bolt (317) and a P cross-sectionally shaped member (301) having the longer side of the P-shape secured to the housing, the P-shaped member being forwardly extended with respect to the bolt. The main drive spring (307) is located alongside the wrapped-over portion of the P-shaped member which main drive spring is arranged to provide motion to the housing and P-shaped member. An anti-bounce weight (354) is mounted inside the wrapped-over part of the P-shaped member and has a spring at one end which is compresed by the anti-bounce weight when the P-shaped member is suddenly retarded by the housing to which it is attached striking the barrel assembly. A latch (326-329) is spring biassed and shaped and dimensioned to interleave locking lugs (322) on the bolt (317), the latch being longitudinally retractable with respect to the housing.
A bolt carrier assembly for a gas operated gun including a housing means, a bolt supported within said housing means, a P-cross sectionally shaped member having the longer side of the P shaped member secured to said housing means, said P shaped member having the closure of the P formed by a wrapped over portion, and said P shaped member being forwardly extended with respect to the bolt to lie adjacent a gas cocking system of the gun which is provided a predetermined distance along a barrel of said gun, and a main drive spring located alongside the wrapped over portion of the P shaped member for providing motion to the housing means and said P shaped member.
A gas operated gun having a receiver, a rear wall of said receiver, a barrel connected to said receiver remote from said rear wall, a gas cocking system provided a predetermined distance along the barrel, guide rail means within said receiver, a bolt carrier assembly slidably supported by said guide rail means, said bolt carrier assembly comprising a housing means, a bolt slidably mounted within said housing means, a P-cross sectionally shaped member having the longer side of the P shaped member secured to said housing means, said P shaped member being forwardly extended with respect to the bolt toward said gas cocking system and having the closure of the P formed by a wrapped over portion, and a main drive spring located alongside the wrapped over portion of the P shaped member for providing motion to the housing means and P shaped member.
Dependencies are inferred from the claim text.