Communications: electrical – Land vehicle alarms or indicators – External alarm or indicator of movement
Patent
1998-06-09
2000-11-14
Lefkowitz, Edward
Communications: electrical
Land vehicle alarms or indicators
External alarm or indicator of movement
340463, 340479, B60Q 126
Patent
active
061475998
ABSTRACT:
A deceleration warning system for motor vehicles which uses engine vacuum to operate a warning signal visible to following traffic. Rapid intake duct pressure fluctuations, which can cause malfunction and deterioration of the vacuum switch, are filtered out by a pressure control unit. The pressure control unit allows a vacuum connection to the intake duct for one cylinder, most conveniently by means of a fitting that screws into a throttle synchronizing port.
Fuel vapor, which can enter an intake vacuum system and condense therein, is continually purged while the engine is operating. This purging action allows the vacuum switch to be mounted below the intake duct without the danger of fuel accumulating in the system.
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Goins Davetta W.
Lefkowitz Edward
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