Communications: electrical – Land vehicle alarms or indicators – External signal light system
Patent
1995-04-13
1997-06-10
Crosland, Donnie L.
Communications: electrical
Land vehicle alarms or indicators
External signal light system
340469, 3404572, 315 82, 315 83, 307 108, B60Q 144, B60Q 102
Patent
active
056380453
ABSTRACT:
An external signal light system with two intensity levels. The system includes a dual-filament lamp bulb to alert observers that the vehicle brakes are being actuated. A power circuit connected to the vehicle storage battery provides electrical current to the bulb through a pair of serially connected switches. A first switch is closed upon actuation of the automobile's brakes. A second switch, controlled by a relay, delivers electrical current through the power circuit to either one of the bulb filaments in response to the energization state of the vehicle headlights. In the event that the headlights are energized, the second switch directs electrical current to the bulb's high wattage filament upon actuating the brakes. When the headlights are de-energized, however, electrical current is directed to the low wattage filament upon actuation of the brakes.
REFERENCES:
patent: 2897479 (1959-07-01), Keegin
patent: 3148306 (1964-09-01), Onksen et al.
patent: 3206723 (1965-09-01), Doane
patent: 3244934 (1966-04-01), Webb
patent: 3277442 (1966-10-01), Kearney
Crosland Donnie L.
Greiner Stephen R.
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