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:
Aug. 28, 2001

Filed:

Aug. 13, 1998
Applicant:
Inventor:

Shigeyuki Miyazawa, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 4/900 ;
U.S. Cl.
CPC ...
F04B 4/900 ;
Abstract

A cam case,is provided which swingably supports a cam ring,fitted to a rotor,having a vane,to form a pump chamber,from the outer surface such that the cam ring,is swingably supported by a swingable pin,disposed in the axial direction as a fulcrum, the cam case,serving as an intermediate body. Pump bodies are disposed on the two ends of the cam case in the axial direction. Moreover, a front body,and a rear body,for rotatively supporting a rotational shaft,of the rotor are disposed. A low-pressure chamber,for introducing low-level hydraulic pressure is formed at a position between the backside of the pressure plate and the front body, the position opposing a suction-side region,A of the pump chamber.


Find Patent Forward Citations

Miyazawa, Shigeyuki. (2001). Variable displacement pump (U.S. Patent No. 6280150). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6280150

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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