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:
Sep. 05, 1978
Filed:
Nov. 26, 1975
Applicant:
Inventors:
Mamoru Nishizawa, Yokohama, JP;
Takashi Hisatomi, Yokohama, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
1231 / ;
Abstract
An EGR (exhaust gas recirculation) control valve is operated to meter the flow of recirculating engine exhaust gases during engine acceleration only and is locked in a lock position to close the EGR passageway in response to a high pressure prevailing in a vacuum chamber of a servo device of the EGR control valve during engine operations excluding acceleration.
Nishizawa, Mamoru. (1978). System to feed exhaust gas into the induction passage of an internal (U.S. Patent No. 4111172). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4111172
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile