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.

Date of Patent:
Dec. 07, 2010

Filed:

Mar. 16, 2007
Applicants:

Takashi Kondo, Saitama-ken, JP;

Kazuhiko Iso, Saitama-ken, JP;

Yojiro Koiwa, Saitama-ken, JP;

Yasunori Ono, Gunma-ken, JP;

Atsushi Yanagisawa, Gunma-ken, JP;

Atsushi Kaneko, Gunma-ken, JP;

Inventors:

Takashi Kondo, Saitama-ken, JP;

Kazuhiko Iso, Saitama-ken, JP;

Yojiro Koiwa, Saitama-ken, JP;

Yasunori Ono, Gunma-ken, JP;

Atsushi Yanagisawa, Gunma-ken, JP;

Atsushi Kaneko, Gunma-ken, JP;

Assignees:

Honda Motor Co., Ltd., Tokyo, JP;

Yamada Manufacturing Co., Ltd., Kiryu-shi, Gunma-ken, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03C 2/00 (2006.01); F04B 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An oil pump in which pulsation vibration due to the dynamic pressure on the discharge port side can be attenuated. In an oil pump for transporting fluid from a suction port to a discharge port by the rotation of a rotor mounted in a pump casing, a resonator configured from an introduction path and a chamber is formed with respect to a discharge flow channel that communicates with the discharge port in the flow direction of the discharge flow channel. A channel in a direction different to the flow direction of the discharge flow channel is communicatingly formed in the vicinity of the resonator.


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