发明名称 Disaster mitigation gas shut-off device
摘要 A gas valve for attachment to a gas line for preventing flow of gas during and subsequent to a vibratory shock above a pre-determined intensity; a tilting of said valve beyond a pre-determined angle from the vertical; and/or when an excess flow of gas through said valve above a pre-determined velocity occures. The trip mechanism is a set of three hinged, centrally suspended inertia weights which are mass biased away from said suspension points and incorporate aerodynamically designed flow vanes and having release hooks at their lower inner facing ends which engage an articulated head atop a shaft and stopper assembly which is spring biased downward against a valve seat near the inlet orifice of said valve. The valve having an external reset lever and multiple inertia weight/flow vane configurations for custom applications.
申请公布号 US4658846(A) 申请公布日期 1987.04.21
申请号 US19860903508 申请日期 1986.09.04
申请人 JOHNSON, ROGER L. 发明人 JOHNSON, ROGER L.
分类号 F16K17/36;(IPC1-7):F16K17/36 主分类号 F16K17/36
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