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:
Sep. 18, 2012
Filed:
Sep. 25, 2006
Shingo Kono, Iwata, JP;
Hisataka Hasegawa, Fukuroi, JP;
Masahiko Satoda, Kariya, JP;
Nobuhiro Kasahara, Iwata, JP;
Masakuni Suzuki, Toyota, JP;
Shingo Kono, Iwata, JP;
Hisataka Hasegawa, Fukuroi, JP;
Masahiko Satoda, Kariya, JP;
Nobuhiro Kasahara, Iwata, JP;
Masakuni Suzuki, Toyota, JP;
NTN Corporation, Osaka, JP;
Abstract
An oil pump comprises a rotation shaft having an eccentric part, a needle roller bearing supporting the eccentric part of the rotation shaft, a tappet abutting on the outer ring of the needle roller bearing and arranged in a radial manner, a plunger arranged on the tappet and reciprocated by the rotation of the rotation shaft, and a balancer arranged on both ends of the eccentric part. The balancer has a large diameter part and a small diameter part and when the large diameter part is arranged so as to face the direction opposite to an eccentric direction, the rolling space of a roller can be projected from an axial direction through the balancer.