Alarm system for use with cigarette lighter receptacle of vehicl

Details Alarm system for use with cigarette lighter receptacle of vehicl Alarm system for use with cigarette lighter receptacle of vehicl

1973-07-09

1976-04-27

Caldwell, John W.

Communications: electrical

Selective

Having indication or alarm

180 99, 340279, B60Q 152, B60K 2800

Patent

active

039538311

ABSTRACT:
A system for actuating an alarm and for stopping the engine of a vehicle when the vehicle driver starts to doze or fall asleep. The system includes a mercury switch attachable to the head of the driver, such as on a pair of eyeglasses, and the switch is coupled to a cable having a plug for insertion into the conventional cigarette lighter receptacle on the dashboard of the vehicle. A light flasher, a relay coil, and a buzzer are electrically coupled to the receptacle and energized simultaneously when the mercury switch closes upon movement of the head. The flasher and buzzer provide visual and audible alarms while the relay coil operates a normally closed switch for opening the ignition circuit of the vehicle to stop the engine.

REFERENCES:
patent: 3011040 (1961-11-01), DeRemer et al.
patent: 3049188 (1962-08-01), Giannetti
patent: 3208062 (1965-09-01), Gregory
patent: 3338240 (1967-08-01), Raupp
patent: 3514623 (1970-05-01), Ballard
patent: 3559206 (1971-01-01), Beecham

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