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:
Aug. 11, 1992
Filed:
Jun. 19, 1991
Applicant:
Inventor:
Ikuo Hirose, Shizuoka, JP;
Assignee:
Jatco Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
74867 ; 1376256 ; 251 47 ;
Abstract
In order to improve only a pressure variation characteristic of hydraulic fluid supplied to a hydraulically actuable frictional coupling, but also a pressure variation characteristic thereof discharged from the coupling, a pressure regulator valve is provided which has a signal pressure port connected via a fluid passage to a shift valve. An accumulator is connected to the fluid passage at a portion between one end and an opposite end of the fluid passage. The pressure regulator valve is operative to cause a change in hydraulic fluid pressure supplied to the coupling in response to a change in a signal pressure at the signal pressure port.