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:
Oct. 27, 2015
Filed:
Oct. 13, 2011
Satoshi Usui, Hitachinaka, JP;
Kenichiro Tokuo, Hitachinaka, JP;
Tatsuo Kawano, Hitachinaka, JP;
Masahiko Hayatani, Hitachinaka, JP;
Shingo Tamura, Hitachinaka, JP;
Hiroyuki Yamada, Hitachinaka, JP;
Katsumi Miyazaki, Hitachinaka, JP;
Satoshi Usui, Hitachinaka, JP;
Kenichiro Tokuo, Hitachinaka, JP;
Tatsuo Kawano, Hitachinaka, JP;
Masahiko Hayatani, Hitachinaka, JP;
Shingo Tamura, Hitachinaka, JP;
Hiroyuki Yamada, Hitachinaka, JP;
Katsumi Miyazaki, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
The present invention eliminates a valve holder and accommodates a valve guide in a small space provided between a valve seat and a peripheral surface part of a pressure chamber to reduce the size of a pump. The valve guide guides a stroke of the valve and is provided inside the valve seat. The valve includes an annular abutting surface that abuts a valve seat formed in a valve housing to shut off a fuel intake passage and a bottomed cylindrical part is provided at an inner peripheral part of the annular abutting surface. The bottomed cylindrical part is inserted into a fuel introduction hole formed in the valve housing inside the valve seat. A member having a cylindrical surface part that supports a reciprocating motion of the valve, is fixed to the valve housing, face-to-face with an inner peripheral part of the bottomed cylindrical part.