Turn signal non-return indicator

Details Turn signal non-return indicator Turn signal non-return indicator

1989-09-11

1990-06-12

Orsino, Joseph A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340475, B60Q 126

Patent

active

049336657

ABSTRACT:
There is disclosed a non-return indicator for a turn signal in a road vehicle which may be installed with at most three or four electrical connections; it includes a housing with four lead wires extending to a vehicle ground, a plus 12 volt wire, a right turn circuit wire tap, and a left turn circuit wire tap. The indicator includes a binary counter IC for registering a count of 64, 128, or 256; the count setting may be selectable; a separate time delay IC to reset the counter may be provided. A pair of back to back diodes in the right turn and left turn-connected conductors keep them isolated while the counter receives a count for either right turn or left turn signal flashes; upon reaching the predetermined count the counter signals a gate circuit to provide either a steady or intermittent current to an indicator buzzer, beeper or lamp. Alternatively a storage capacitor will permit the counter or other IC's to be powered only from the turn circuits.

REFERENCES:
patent: 4275379 (1981-06-01), Nakano et al.
patent: 4403211 (1983-09-01), Shibata et al.
patent: 4644318 (1987-02-01), Miyamoto et al.
patent: 4792785 (1988-12-01), Miyamoto et al.

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