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:
Feb. 06, 1979
Filed:
Dec. 07, 1976
Applicant:
Inventors:
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
1231 / ;
Abstract
Engine suction is applied for controlling admission of atmospheric air into a vacuum chamber of an EGR control valve so as to reduce the degree of opening of the EGR control valve during low load running of the engine, and concurrently the vacuum in a venturi of a carburetor is applied for controlling the admission of atmospheric air into the vacuum chamber so as to increase the degree of opening of the EGR control valve during high load running of the engine.
Otsubo, Kizuku. (1979). Exhaust gas recirculation control system (U.S. Patent No. 4137874). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4137874
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