Communications: electrical – Land vehicle alarms or indicators – External signal light system
Patent
1994-05-26
1996-02-27
Swarthout, Brent A.
Communications: electrical
Land vehicle alarms or indicators
External signal light system
340467, 200 6189, 200 865, 307108, 180271, 123359, 123198D, B60Q 144
Patent
active
054952263
ABSTRACT:
A secondary brake light switch comprising a hollow housing having a first end and a second end; an electrically conductive plunger slidably disposed within the housing; a switch coupled to the second end of the housing with switch having an input terminal facing the plunger and an output terminal adapted to be coupled between brake lights of a vehicle and their associated power source; a generally hollow vacuum valve having a first end coupled to first end of the housing, a second end adapted to be coupled to a vacuum system of a vehicle, and a diaphragm disposed within the vacuum valve with the diaphragm actuated when a high vacuum condition is created at the second end of the housing when a vehicle is accelerating and the diaphragm de-actuated when a low vacuum condition is created at the second end of the housing when a vehicle is idling; and an extension mechanism coupled between the diaphragm and the plunger for allowing the plunger to contact the input terminal of the switch when the diaphragm is de-actuated, whereby enabling brake lights to be energized, and allowing the plunger to break contact with the input terminal of the switch when the diaphragm is actuated, whereby enabling brake lights to be de-energized.
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Swarthout Brent A.
Tong Nina
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