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:
Jun. 14, 2011
Filed:
Dec. 12, 2007
Yasuhito Nakakuki, Atsugi, JP;
Kaname Kidokoro, Isehara, JP;
Tetsuo Abe, Atsugi, JP;
Toshimitsu Sakaki, Atsugi, JP;
Mitsuo Sasaki, Hadano, JP;
Masakazu Kurata, Yokohama, JP;
Yasuhito Nakakuki, Atsugi, JP;
Kaname Kidokoro, Isehara, JP;
Tetsuo Abe, Atsugi, JP;
Toshimitsu Sakaki, Atsugi, JP;
Mitsuo Sasaki, Hadano, JP;
Masakazu Kurata, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An oil pump including a first housing having a rotation shaft insertion hole, a cam ring, a pump element, a rotation shaft rotatably extending through the rotation shaft insertion hole, a second housing disposed on the cam ring, wherein the cam ring is placed in a position relative to the rotation shaft insertion hole of the first housing by using a jig, and the cam ring includes a clamped portion that is clamped by a cam ring holding device, while the first housing and the second housing are fixed to each other after placing the cam ring in the position relative to the rotation shaft insertion hole by using the jig. Alternatively, the oil pump including a fixing means for fixing the cam ring to the pump body instead of the clamped portion.