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. 13, 1999
Filed:
Dec. 15, 1997
Hidefumi Inoue, Saitama-ken, JP;
Tohru Satoh, Saitama-ken, JP;
Jidosha Kiki Co., Ltd., Tokyo, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A brake booster includes a reaction transmitting means which includes a spring that is compressed when a brake reaction from a reaction disc exceeds a preset load. A holder is mounted on a valve body, and a brake reaction which is transmitted from the reaction disc is accepted by the valve body through the holder. A plate plunger is slidably fitted in the holder to allow a brake reaction which is transmitted to the reaction disc to be transmitted to the reaction transmitting means and the valve plunger through the plate plunger. A larger outer diameter can be chosen for the spring in order to achieve a preferred preset load, and a servo ratio can be freely established by the choice of areas of contact between the reaction disc on one hand and the holder and the plate plunger on the other hand.