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. 29, 1997
Filed:
Mar. 07, 1996
Masahiro Ikeda, Saitama-ken, JP;
Tohru Satoh, Saitama-ken, JP;
Jidosha Kiki Co., Ltd., Tokyo, JP;
Abstract
An improvement of a valve mechanism used in a brake booster is disclosed. A valve element comprises a first and a second annular member, both formed of a metal and which are connected together in an axial orientation, and an elastic deformation which is connected to the rear side of the second annular member. A rubber piece mounted on the first annular member defines a first seat area, and a rubber piece mounted on the second annular member defines a second seat area. With this construction, a spring which is used to urge either seat area of the valve element into seating engagement with the respective valve seat may be compressed to a lower load than in the prior art, thus allowing an input required to initiate the operation of the brake booster to be reduced.