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:
Dec. 25, 2001
Filed:
Jul. 09, 1999
Jidosha Kiki Co., Ltd., Tokyo, JP;
Abstract
In an automatic brake booster, a sleeve,constituting a valve mechanism,has a drive portion,disposed on the front side, a valve portion,forming a second valve seat,, a mating portion,for mating with a valve seat portion when the drive portion is moved forward, and a conical spring,disposed between the drive portion and the valve seat portion and used for separating both members from each other. The conical spring is compressed during the normal braking operation so as to make the opening amount of the second valve seat greater than that during the automatic braking operation. Moreover, a plate plunger,for transmitting braking counterforce is relatively displaceably provided and a first member,and a second member,for mutually contacting a reaction disc,is also provided, so that the braking counterforce of the first member is transmitted to the sleeve during the automatic braking operation.