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. 05, 2021
Filed:
Sep. 04, 2017
Applicant:
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Inventors:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T 8/40 (2006.01); F04B 53/10 (2006.01); B60T 13/16 (2006.01); F04B 1/053 (2020.01); B60T 17/00 (2006.01); F04B 53/16 (2006.01); F04B 1/0452 (2020.01); B60T 8/36 (2006.01);
U.S. Cl.
CPC ...
F04B 53/1002 (2013.01); B60T 8/368 (2013.01); B60T 8/4031 (2013.01); B60T 13/16 (2013.01); B60T 17/00 (2013.01); F04B 1/0452 (2013.01); F04B 1/053 (2013.01); F04B 53/16 (2013.01); B60T 8/4081 (2013.01); B60T 13/161 (2013.01);
Abstract
Provided is a plunger pump where quietness can be ensured. A plunger pump includes a cylinder, a piston, a discharge valve, and a plug member. The plug member includes: a recessed portion formed on a circumferential wall of a discharge chamber opposing an outer periphery of the discharge valve in a radial direction; and a discharge passage disposed at a position different from the recessed portion, formed on the circumferential wall of the discharge chamber opposing the outer periphery of the discharge valve in the radial direction, and connecting the discharge chamber and the outside with each other.