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. 08, 2015
Filed:
Jul. 22, 2009
Hisashi Ono, Okazaki, JP;
Masaharu Hamasaki, Nagoya, JP;
Yuki Nishida, Kariya, JP;
Koji Nunami, Obu, JP;
Shinji Kazaoka, Kariya, JP;
Hisashi Ono, Okazaki, JP;
Masaharu Hamasaki, Nagoya, JP;
Yuki Nishida, Kariya, JP;
Koji Nunami, Obu, JP;
Shinji Kazaoka, Kariya, JP;
AISIN SEIKI KABUSHIKI KAISHA, Kariya-Shi, Aichi, JP;
Abstract
An oil pump includes: an inner rotor rotatable with a drive shaft in a unified manner on a drive-rotation axis; an outer rotor which has inner teeth configured to engage with outer teeth of the inner rotor and is rotatable about a driven axis eccentric to the drive-rotation axis; and an adjustment ring for rotatably supporting the outer rotor. A guide means which allows the adjustment ring to rotate about the driven axis, while allowing the driven axis to revolve about the drive-rotation axis, is formed of: first and second arm portions provided on the adjustment ring; and first and second guide faces with which the first and second arm portions are brought into slidable contact.