Utility shutoff method and device

Details Utility shutoff method and device Utility shutoff method and device

1988-03-21

1989-12-26

Chambers, A. Michael

Valves and valve actuation

Biased trip

Mechanical movement trip actuation

251294, 137595, F16K 3146

Patent

active

048893137

ABSTRACT:
A device for turning off valves for utilities such as gas and water from a remote location in the event of an earthquake or other emergency. The device has two spring loaded valve assemblies, each of which has a valve stem held away from a valve seat by a latch. When the latch is tripped, the valves close. Cables are passed from a pull ring accessible to the operator and pass through conduits to the spring loaded valves. In the event of an earthquake or other emergency, the pull ring is pulled and the utilities are shut off.

REFERENCES:
patent: 1648662 (1927-11-01), Shadrich
patent: 2630818 (1953-03-01), McNol
patent: 2665714 (1954-01-01), Greenwood
patent: 3378081 (1968-04-01), O'Reilly
patent: 4425823 (1984-01-01), Kulischenko et al.

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