Communications: electrical – Land vehicle alarms or indicators – External signal light system
Patent
1989-01-13
1990-03-27
Orsino, Joseph A.
Communications: electrical
Land vehicle alarms or indicators
External signal light system
315 77, 307 108, B60Q 100
Patent
active
049124544
ABSTRACT:
A vehicle warning system is provided having a plurality of light emitting diodes mounted on a rearward facing portion of a housing, that may be attached to the side of the vehicle. A switching transistor selectively supplies current to the LED's, through a flashing circuit. The base of the transistor is driven by electrical connection to the junction of first and second phototransistors, which are mounted on the housing and directed skywardly and rearwardly, respectively. During the day the skywardly pointing phototransistor grounds the base of the transistor so that the LED's remain off. At night, the LED's are turned on responsive to the headlights of an oncoming vehicle, which will activate the rearwardly facing phototransistor.
REFERENCES:
patent: 2813265 (1957-11-01), Finks
patent: 2918565 (1959-12-01), Vermette
patent: 3175186 (1965-03-01), Barenyi
patent: 3263211 (1966-07-01), Heidman, Jr.
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patent: 3832597 (1974-08-01), Mitchell
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patent: 4249160 (1981-02-01), Chilvers
patent: 4695769 (1987-09-01), Schweickardt
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Orsino Joseph A.
Scutch III Frank M.
Wolo Manufacturing Corp.
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