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:
Nov. 30, 1999
Filed:
Dec. 15, 1997
Applicant:
Inventor:
Masahiko Hara, Kanagawa, JP;
Assignee:
Unisia Jecs Corporation, Atsugi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ; B60T / ;
U.S. Cl.
CPC ...
303 10 ; 3031161 ; 3031162 ;
Abstract
A pump device includes main and auxiliary eccentric portions integrated with a motor output shaft on the side of its base end and on the side of its pointed end. The main eccentric portion is larger in diameter than the auxiliary eccentric portion. A needle roller bearing and a ball bearing are fitted to the outer peripheries of the eccentric portions. Main and auxiliary pumps include a pair of plungers which abut on the outer peripheries of the bearings, respectively, and are driven by the main and auxiliary eccentric portions.