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:
Jan. 08, 1980
Filed:
Apr. 19, 1978
Noboru Toyama, Susono, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, US;
Abstract
An exhaust gas recirculation system for an internal combustion engine, having an exhaust gas recirculation control valve of the diaphragm type which controls the opening of an exhaust gas recirculation passage and is actuated by intake vacuum of the engine modified by a vacuum control valve which in turn is actuated by the pressure of exhaust gases in the exhaust gas recirculation passage controlled by the exhaust gas recirculation control valve, the system further including a relief valve which opens a diaphragm chamber of the exhaust gas recirculation control valve to the atmosphere when the engine is decelerated so that the exhaust gas recirculation control valve immediately closes the exhaust gas recirculation passage when the engine is decelerated.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile