Self-sustaining alarm transmitter device

Details Self-sustaining alarm transmitter device Self-sustaining alarm transmitter device

1973-09-12

1976-09-14

Habecker, Thomas B.

Communications: electrical

Systems

Call station

325185, 320 1, 322 2R, 320 2, 340421, G08b 2100

Patent

active

039809960

ABSTRACT:
An alarm transmitter device includes a storage element which stores electrical charge and which energizes an output transmitting circuit upon the occurrence of an alarm condition. To maintain the storage element at full charge or in ready standby mode, a trickle charging circuit is provided which includes an energy conversion device for converting solar energy, broadcast electromagnetic energy, heat energy or the like into an electrical current suitable for trickle charging the storage element. After the storage element is substantially discharged, subsequent to an occurrence of an alarm condition, a battery or other source of electrical energy is connectable to terminals connected to the storage element for initially rapidly recharging the storage element to the fully charged state.

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patent: 3665312 (1972-05-01), Jarvis
patent: 3772669 (1973-11-01), Johnston et al.
patent: 3781647 (1973-12-01), Glaser

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