Seismic safety cutoff device

Details Seismic safety cutoff device Seismic safety cutoff device

1976-11-26

1978-12-26

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

By pendulum or swinging member

F16K 1736

Patent

active

041311248

ABSTRACT:
A seismic safety cutoff device responsive to external forces such as earthquakes, for use with a valve for controlling the flow of gases or liquids including a housing adaptable to a valve mechanism having a spring-biased valve stem, the safety cutoff device also having a substantially vertically-mounted rod which is pivotable near its upper end to permit movement in any horizontal direction of a weight suspended at its lower end for releasing the spring-biased valve stem upon its deflection by an external force. A vertical stem-positioning rod is positioned between the valve stem and the pivotable rod for easy visual inspection and for ease of re-setting the device upon actuation.

REFERENCES:
patent: 941033 (1909-11-01), Pardee
patent: 2158753 (1939-05-01), Hansen
patent: 2255965 (1941-09-01), Brandon
patent: 3927689 (1975-12-01), Sharp

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