System for operating fire prevention devices

Details System for operating fire prevention devices System for operating fire prevention devices

1975-03-10

1976-09-07

Moose, Harry

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307 41, 340223, 3403094, 317137, H01H 4714

Patent

active

039796485

ABSTRACT:
The system for operating fire prevention devices comprises a plurality of fire prevention device operators successively operated directly or through another already operated operator in response to the operation of one of the fire detectors. Each of the operators includes switch means for switching the circuit from one operator to another when the fire prevention device associated therewith completes its operation. The switch means also function to switch the circuit upon the failure of the fire prevention device within a predetermined time.

REFERENCES:
patent: 2538789 (1951-01-01), Maynard
patent: 2667630 (1954-01-01), Jorgensen
patent: 2709250 (1955-05-01), Marmorstone
patent: 3114901 (1963-12-01), Capelle
patent: 3423637 (1969-01-01), Hillmann
patent: 3846641 (1974-11-01), Eguchi

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