Direction indicator control circuits for road vehicles

Details Direction indicator control circuits for road vehicles Direction indicator control circuits for road vehicles

1974-06-05

1976-05-04

Caldwell, John W.

Communications: electrical

Selective

Having indication or alarm

340 56, B60Q 140, B60Q 142

Patent

active

039551750

ABSTRACT:
A direction indicator control circuit for a road vehicle has a switch means for operating the direction indicator lamps to indicate a turn, and a pulse generator operated by return movement of the steering wheel following completion of a turn, the pulse generator producing a pulse of fixed length which serves to cancel the switch means. A pair of switches are associated with each turning direction, each pair being successively operated by the turning of the steering wheel in one order during the initiation of a turn, and in the reverse order after the completion of the turn. The pulse generator produces the fixed length pulse only when the switches are actuated in the correct order, thereby eliminating erroneous turn indicator information.

REFERENCES:
patent: 2845608 (1958-07-01), Short
patent: 3106981 (1963-10-01), Chakiris
patent: 3555506 (1971-01-01), Daws
patent: 3555507 (1971-01-01), Burson
patent: 3559205 (1971-01-01), Colby
patent: 3914737 (1975-10-01), Sato

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