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. 12, 2021
Filed:
Mar. 26, 2018
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Kazuaki Tokumaru, Hitachinaka, JP;
Masahiko Hayatani, Hitachinaka, JP;
Satoshi Usui, Hitachinaka, JP;
Atsuji Saito, Hitachinaka, JP;
Kenichiro Tokuo, Hitachinaka, JP;
Masamichi Yagai, Hitachinaka, JP;
Masayuki Suganami, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Abstract
Provided is a high-pressure fuel pump which can fix a cylinder to a pump body using a simple structure, and can reduce a displacement amount inward in a radial direction of the cylinder. A high-pressure fuel pump includes a pump body which is formed with a pressing chamber and a cylinder which is inserted in a hole formed in the pump body. The cylinder is swaged to the hole by pressing a convex portion on an outside in a radial direction to fit into the hole on an opposite side to the pressing chamber, by screwing a formed screw thread into the hole, or by being swaged with the opposite side to the pressing chamber. The cylinder is formed with a clearance in the radial direction with respect to the hole of the pump body all over a region from a bonding portion to an upper end.