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:
Apr. 30, 1991
Filed:
May. 04, 1989
Applicant:
Inventor:
Isao Yagi, Saitama, JP;
Assignee:
Jidosha Kiki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
60413 ; 605471 ; 91368 ; 91441 ;
Abstract
A hydraulic pressure booster which may be used in a brake system of a vehicle is constructed to allow a brake output to be increased upon ceasing the depression of a brake pedal, thus imparting a brake feeling which is favorable to a driver. Hydraulic pressure from a first power chamber flows into a second power chamber through a passage provided with an orifice in shunt with a check valve, such that flow from the first power chamber to the second power chamber is retarded while flow from the second power chamber to the first power chamber is unrestricted.