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:
Jul. 24, 2001
Filed:
Feb. 09, 1999
Applicant:
Inventor:
Tadashi Fukami, Inagi, JP;
Assignee:
Ohken Seiko Co., Ltd., Inagi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 4/300 ;
U.S. Cl.
CPC ...
F04B 4/300 ;
Abstract
A pump includes a pump chamber, a reciprocally, driven body that is moved to perform a pumping function by changing the capacity of the pump chamber, and a driving mechanism that reciprocally moves the driven body. The driving mechanism includes a rotating plate which is fixed to an output shaft of a motor and has an annular groove therein. A ball is sandwiched between an annular groove of a driving plate and the annular groove of the rotating plate. When the rotating plate begins rotating, the ball moves in the annular grooves and changes the inclined direction of the driving plate, thus, causing the driven body to reciprocate.