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. 16, 1994
Filed:
Jun. 22, 1993
Applicant:
Inventor:
Shintaro Uyama, Saitama, JP;
Assignee:
Jidosha Kiki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
9137 / ;
Abstract
An improvement of a constant pressure passage formed within a valve body of a brake booster is disclosed. A notch of a given size is formed in the internal peripheral surface of the valve body at a location rearward of the rear end of the constant pressure passage. The provision of the notch allows the diameter of a reaction disc to be increased over the prior art by an amount corresponding to the depth of the notch, thus allowing the durability of the reaction disc to be improved.