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.

Date of Patent:
Mar. 21, 2017

Filed:

Sep. 19, 2014
Applicant:

Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;

Inventors:

Shinya Nose, Tokyo, JP;

Hidehiro Soga, Tokyo, JP;

Masayuki Aota, Tokyo, JP;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 1/18 (2006.01); F04B 1/14 (2006.01); F04B 53/10 (2006.01); F04B 7/02 (2006.01);
U.S. Cl.
CPC ...
F04B 1/18 (2013.01); F04B 1/141 (2013.01); F04B 1/143 (2013.01); F04B 1/146 (2013.01); F04B 53/1037 (2013.01); F04B 7/02 (2013.01);
Abstract

A movable body that has a cylinder and a valve apparatus is accommodated inside an accommodating chamber of a pump body so as to cover a discharging orifice. A piston sucks a fluid into the movable body, and discharges the fluid from inside the movable body to the discharging orifice by being slid reciprocally through a piston sliding aperture of the cylinder. A relieving passage that communicates between a suction volume space of the accommodating chamber and the discharging orifice is formed between an inner surface of the accommodating chamber and the movable body by the movable body moving away from the discharging orifice in opposition to a force from a forcing body.


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