Pulsed alarm system

Details Pulsed alarm system Pulsed alarm system

1976-01-19

1977-06-14

Waring, Alvin H.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340255, 340276, G08B 1900

Patent

active

040300951

ABSTRACT:
A pulse supply alarm system supplies a set of energizing pulses spaced sequentially in time to a plurality of alarm sensing circuits and supplies a set of synchronizing pulses, synchronized to the set of energizing pulses, to a plurality of indicating circuits each one of which corresponds to an alarm sensing circuit such that each indicating circuit will generate an alarm indication only upon an alarm condition sensed during the time which its associated alarm sensing circuit receives its energizing pulse.

REFERENCES:
patent: 2782404 (1957-02-01), Bergman
patent: 2814795 (1957-11-01), Spooner
patent: 3588890 (1971-06-01), Cox
patent: 3626398 (1971-12-01), Owens, Jr.
patent: 3631268 (1971-12-01), Matthews
patent: 3701113 (1972-10-01), Chace et al.
patent: 3789242 (1974-01-01), Cantor
patent: 3812487 (1974-05-01), Burton
patent: 3848241 (1974-11-01), LeNay et al.
patent: 3947811 (1976-03-01), Hodgson

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