Earthquake utilities cut-off control system

Details Earthquake utilities cut-off control system Earthquake utilities cut-off control system

1987-12-17

1989-06-20

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

137 39, 200 6145R, 307117, 361170, G08B 2100

Patent

active

048412872

ABSTRACT:
A seismic detector which generates an electrical signal in response to the occurrence of a vertical seismic wave predetermined magnitude is mounted in a weather-proof container in or adjacent an inhibitable building. A circuit breaker to interupt electrical power to the building is mounted in the same container and connected to open in response to signals from the detector. Gas and water line connections each with a solenoid operated shut-off valve are separately housed in a weather-proof container in or adjacent the building and the valves are connected so that they will close in response to a signal from the seismic detector. The entire system is rendered fail safe through the use of an interruptible power supply system housed in the container with the seismic detector and connected to energize the gas and water line cut off valves to hold them in open condition. In response to a signal from the seismic detector, however, the circuit between the power supply and the cutoff valves is opened which cuts off all utilities to the building.

REFERENCES:
patent: 4098284 (1978-07-01), Yamada
patent: 4180088 (1979-12-01), Mallett
patent: 4262687 (1981-04-01), Kobayashi
patent: 4390922 (1983-06-01), Pelliccia
patent: 4414994 (1983-11-01), Hogan

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