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:
Jul. 14, 1987
Filed:
Feb. 28, 1986
Applicant:
Inventors:
Haruyoshi Kumura, Yokohama, JP;
Keiju Abo, Yokosuka, JP;
Hiroyuki Hirano, Yokohama, JP;
Sigeaki Yamamuro, Zushi, JP;
Masaki Nakano, Kawasaki, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Primary Examiner:
Int. Cl.
CPC ...
B60K / ; F01B / ;
U.S. Cl.
CPC ...
74863 ; 74867 ; 92 48 ; 92 65 ; 13762566 ;
Abstract
In a line pressure control device for a hydraulic control system of an automatic transmission, a vacuum diaphram unit is constructed to apply upon a valve spool of a throttle valve or a regulator valve such a force that reduces with increasing intake manifold vacuum when the intake manifold vacuum is lower than a first predetermined value and such a force that increases with increasing intake manifold vacuum when the intake manifold vacuum is higher than a second predetermined value.