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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.:

US 8740595 B1

PDFFull Text
Date of Patent:
Jun. 03, 2014

Filed:

Mar. 31, 2010

Gear pump

Applicant:

Yuuichi Hidaka, Wako, JP;

Inventor:

Yuuichi Hidaka, Wako, JP;

Assignee:

Honda Motor Co., Ltd, Tokyo, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Kenneth Bomberg

Assistant Examiner:

Jason T Newton

Int. Cl.
CPC ...
F01C 11/00 (2006.01); F04C 14/16 (2006.01); F04C 11/00 (2006.01); F04C 2/14 (2006.01); F04C 15/00 (2006.01); F04C 2/18 (2006.01); F04B 9/02 (2006.01); F16H 39/36 (2006.01); F16D 31/04 (2006.01); F16D 67/00 (2006.01);
U.S. Cl.
CPC ...
F04C 14/16 (2013.01); F04C 11/001 (2013.01); F04C 2/14 (2013.01); F04C 15/0057 (2013.01); F04C 2270/56 (2013.01); F04C 2/18 (2013.01); F04B 9/02 (2013.01); F16H 39/36 (2013.01); F16D 31/04 (2013.01); F16D 67/00 (2013.01);
Abstract

A gear pump includes: a first pump constructed from a first drive gear rotated by driving of a drive shaft and a first driven gear rotatably arranged coaxially with a rotary shaft; and a second pump constructed from a second drive gear rotatably provided coaxially with the rotary shaft and a second driven gear. The rotary shaft allows the first driven gear and the second drive gear to engage with and disengage from each other in a rotation direction by movement to an axial direction. When the discharge pressure is higher than predetermined pressure, rotation of the first driven gear is not transmitted to the second drive gear and only the first pump operates. When the discharge pressure becomes the predetermined pressure or less, the rotation of the first driven gear is transmitted to the second drive gear and the first and the second pumps operate.

Find Patent Forward Citations

Hidaka, Yuuichi. (2014). Gear pump (U.S. Patent No. 8740595). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8740595

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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