Fluid handling – Control by change of position or inertia of system – With second control
Patent
1986-09-04
1987-04-21
Nilson, Robert G.
Fluid handling
Control by change of position or inertia of system
With second control
137460, F16K 1736
Patent
active
046588469
ABSTRACT:
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.
REFERENCES:
patent: 4028510 (1977-06-01), Yamaura
patent: 4513763 (1985-04-01), Ware
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