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:
Apr. 20, 1982
Filed:
Dec. 12, 1979
Applicant:
Inventors:
Hisanobu Kanamaru, Katsuta, JP;
Moisei Okabe, Tokyo, JP;
Akira Tohkairin, Katsuta, JP;
Hideo Tatsumi, Mito, JP;
Takuzo Kurosawa, Hitachi, JP;
Assignees:
Hitachi, Ltd., Tokyo, JP;
Kawamura Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417313 ; 4151 / ; 417319 ; 417362 ; 417424 ; 417429 ;
Abstract
A hydraulic pressure producing system including clutch means located between an output shaft of a motor and a rotary pump arranged in a liquid and operated from outside. The rotary pump is driven only when the clutch means is engaged to obtain a discharge pressure.