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. 08, 1981
Filed:
Sep. 25, 1979
Applicant:
Inventors:
Shigetaka Takada, Ohbu, JP;
Kazumichi Naruse, Nagoya, JP;
Assignee:
Aisan Industry Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ; F22M / ;
U.S. Cl.
CPC ...
123440 ; 123438 ; 13753317 ; 251129 ; 251141 ;
Abstract
An air-fuel ratio control device characterized by the fact that an electromagnetic valve which controls the air bleed quantities for both high- and low-speed fuel systems simultaneously has a pin inserted in a valve disc so as to prevent the rotation of the valve disc but allow it to move axially for open-close operation, so that the valve disc and the seat always contact at the same contacting portion and maintain a perfect seal therebetween. This enables an accurate control of the air bleed quantitiy and therefore of the air-fuel ratio.