Automotive seat belt monitoring system

Details Automotive seat belt monitoring system Automotive seat belt monitoring system

1974-11-01

1976-06-29

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

340278, 307 105B, B60R 2110

Patent

active

039672379

ABSTRACT:
A system for monitoring usage of seat belt means in a motor vehicle includes electrically operable visual signaling means and electrically operable audible signaling means. A first switch is operable in response to initiation of motor vehicle operation for connecting the signaling means to an electrical power supply in the vehicle. An additional switch is operable in response to fastening of the vehicle seat belt means for preventing operation of the audible signaling means. An electrical resistor of positive temperature coefficient of resistivity is arranged to be heated to a selected temperature with a selected time delay after initiation of motor vehicle operation for preferably terminating operation of both signaling means after such time delay even if the vehicle seat belt means are not fastened.

REFERENCES:
patent: 2924817 (1960-02-01), Dawkins et al.
patent: 3340523 (1967-09-01), Whitman
patent: 3665385 (1972-05-01), Booth
patent: 3757293 (1973-09-01), Petersen

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