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:
Jun. 29, 2021
Filed:
Sep. 10, 2018
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Satoshi Usui, Hitachinaka, JP;
Shingo Tamura, Hitachinaka, JP;
Katsumi Miyazaki, Hitachinaka, JP;
Sunao Takahashi, Hitachinaka, JP;
Masayuki Suganami, Iwaki, JP;
Minoru Hashida, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Abstract
A high pressure fuel pump includes a pump housing, pressure and damper chambers, a metal diaphragm, a press-fitted portion, and a weld portion. The pressure chamber is provided in the pump housing. The damper chamber is formed by the pump housing and a damper cover. The metal diaphragm damper is arranged in the damper chamber. At the press-fitted portion, an annular surface of the damper cover is press fitted to an annular surface of the pump housing. The weld portion fixes the damper cover to the pump housing at an entire circumference of the press-fitted portion.