Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1975-01-27
1976-08-24
Duggan, Donovan F.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340256, H01H 4700
Patent
active
039769216
ABSTRACT:
Circuit for triggering an electrical signal for actuation of an electrical mechanism. The circuit includes a switch means for producing an electrical pulse and a means for reversing the current flow upon receipt of such electrical pulse both connected in series. Direction of flow of the current indicates either a closed circuit or readiness for triggering an electrical signal upon a circuit break.
REFERENCES:
patent: 2882455 (1959-04-01), Ferguson, Jr.
patent: 3611362 (1971-10-01), Scott
patent: 3815112 (1974-06-01), Kleber
Bielen, Jr. Theodore J.
Duggan Donovan F.
Moose Jr. Harry E.
Peterson Richard Esty
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