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:
Aug. 01, 2023
Filed:
Oct. 30, 2020
Hitachi Astemo, Ltd., Hitachinaka, JP;
Masamichi Yagai, Hitachinaka, JP;
Kiyotaka Ogura, Hitachinaka, JP;
Shingo Tamura, Hitachinaka, JP;
Yuto Ishizuka, Hitachinaka, JP;
Hiroyuki Yamada, Hitachinaka, JP;
Kenichiro Tokuo, Hitachinaka, JP;
Minoru Hashida, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Hitachinaka, JP;
Abstract
Provided is a fuel supply pump capable of improving welding quality while securing a function of a valve body. A fuel supply pump of the present invention includes a regulating member (discharge valve stopper) that guides movement of a valve body (discharge valve), a main body portion (body) provided with a valve chamber (discharge valve chamber) that houses the regulating member, a sealing member (plug) that seals the valve chamber, and a welded portion (welded portion) that fixes the sealing member to the main body portion. An annular space portion (annular space portion) along an outer periphery of the regulating member is formed between the welded portion and the regulating member. The regulating member includes a positioning portion (fitting portion) for positioning with respect to the main body portion on a side opposite to the sealing member, and a gap forming portion (gap forming portion) forming an annular gap (annular gap) between the gap forming portion and the main body portion, and the annular gap allows a space on a side of the positioning portion in the valve chamber and the annular space portion to communicate with each other.