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:
Nov. 20, 2018
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Abstract
Provided is a high-pressure fuel supply pump capable of reducing a manufacturing cost of a part for holding a metal damper. The high-pressure fuel supply pump includes a pump bodyhaving a pressurizing chambertherein, a damper coverforming a damper chambertogether with the pump bodyon the upstream side of the pressurizing chamber, a metal damperthat is disposed in the damper coverand formed by laminating two metal diaphragms, and a first holding memberthat is disposed in the damper chamberand presses and holds the metal damperfrom one side. The first holding memberincludes a first regulation portion that regulates the radial movement of the metal damper, and a second regulation portion that regulates the radial movement of the first holding memberin the damper chamber. At a position of the second regulation portion, a flow path is formed which allows the fuel in the damper chamberto circulate to both surfaces of the metal damper