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:
Jan. 18, 2005
Filed:
Oct. 24, 2002
Yoshiyasu Takasaki, Saitama-Ken, JP;
Hidefumi Inoue, Saitama-Ken, JP;
Yasushi Mori, Saitama-Ken, JP;
Hiroyuki Oka, Saitama-Ken, JP;
Yoshiyasu Takasaki, Saitama-Ken, JP;
Hidefumi Inoue, Saitama-Ken, JP;
Yasushi Mori, Saitama-Ken, JP;
Hiroyuki Oka, Saitama-Ken, JP;
Bosch Automotive Systems Corporation, Tokyo, JP;
Abstract
A tubular memberis slidably fitted into a valve body, and is formed with a vacuum valve seat. The tubular member, a valve plungerand the valve bodyare maintained in their inoperative positions shown by abutment against a key member. A holderis formed with a tapered surfaceto assist in allowing an elastic deformation of a reaction disc. Immediately after the commencement of operation of a valve mechanismas an input shaftis driven forward, the input shaftand the tubular memberare maintained in their inoperative positions until a rear end face of a variable pressure passageabuts against the key member. The operating stroke of an input shaftcan be chosen to be less than the operating stroke of an output shaftwhile preventing the jumping value from increasing to an excessively high value.