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:
Feb. 23, 2010
Filed:
Apr. 24, 2006
Satoshi Usui, Hitachinaka, JP;
Hiroyuki Yamada, Hitachinaka, JP;
Toru Onose, Ibaraki, JP;
Atsuji Saito, Hitachinaka, JP;
Masami Abe, Hitachi, JP;
Masayoshi Kotaki, Hitachinaka, JP;
Hiroshi Odakura, Hitachiota, JP;
Satoshi Usui, Hitachinaka, JP;
Hiroyuki Yamada, Hitachinaka, JP;
Toru Onose, Ibaraki, JP;
Atsuji Saito, Hitachinaka, JP;
Masami Abe, Hitachi, JP;
Masayoshi Kotaki, Hitachinaka, JP;
Hiroshi Odakura, Hitachiota, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Car Engineering Co., Ltd., Hitachinaka-shi, JP;
Abstract
A high pressure fuel pump for an internal combustion engine having a cylinder, a plunger slidably fitted in the cylinder and a seal mechanism for blocking fuel leakage from an end of a sliding portion between the cylinder and the plunger and also for preventing an lubricant for a driving mechanism of the plunger from entering into the cylinder from the end of the sliding portion of the cylinder and the plunger. A holder surrounding the end of the sliding portion of the cylinder and the plunger is provided. The seal mechanism comprises two mutually independent seal devices mounted with a specific spacing in a longitudinal direction from the end of the sliding portion of the cylinder and the plunger along a circumference of the plunger. The two seal devices are held on the circumference of the plunger by the holder surrounding the end of the sliding portion of the cylinder and the plunger while keeping the specific spacing.