The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 14, 2000
Filed:
Jun. 09, 1998
Jerry Jones, Mill Valley, CA (US);
Other;
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.