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    • 1. 发明申请
    • GAS SYSTEM FOR FIREARMS
    • 气体气体系统
    • WO2009061546A3
    • 2009-09-11
    • PCT/US2008074601
    • 2008-08-28
    • RA BRANDS LLCSTONE JEFFREY W
    • STONE JEFFREY W
    • F41A5/18F41A5/26F41A5/28
    • F41A5/28F41A5/18F41A5/26
    • A piston assembly (200) is provided for a gas-operated firearm of the type having a chamber and a barrel. The piston assembly includes a gas expansion housing (217) and a piston (232) mounted within the gas expansion housing. An annular recess (235) is formed in the outer wall of the piston to receive exhaust gases diverted from the barrel upon firing of the firearm. At least one longitudinally extending groove (237) extends from the annular recess to the head of the piston and forms a pathway for diverting the exhaust gases to the head. of the piston. During firing, pressurized gases are diverted into the annular recess and expand longitudinally from the annular recess to the piston head, whereupon the pressurized exhaust gas drives the gas piston rearwardly along the housing.
    • 为具有室和桶的类型的气动枪支提供活塞组件(200)。 活塞组件包括气体膨胀壳体(217)和安装在气体膨胀壳体内的活塞(232)。 在活塞的外壁上形成有一个环形凹槽(235),以便在火器点火时接收从枪管转向的废气。 至少一个纵向延伸的凹槽(237)从环形凹槽延伸到活塞的头部并且形成用于将废气转向头部的路径。 的活塞。 在燃烧期间,加压气体被转移到环形凹部中并且从环形凹槽纵向膨胀到活塞头,于是加压排气沿着壳体向后驱动气体活塞。