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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 9541085 B1

PDFFull Text
Date of Patent:
Jan. 10, 2017

Filed:

Oct. 16, 2012

Internal gear pump

Applicant:

Sumitomo Electric Sintered Alloy, Ltd., Takahashi-shi, Okayama, JP;

Inventor:

Masato Uozumi, Itami, JP;

Assignee:

SUMITOMO ELECTRIC SINTERED ALLOY, LTD., Okayama, JP;

Attorney:

Ditthavong & Steiner, P.C.

Primary Examiner:

Kenneth Bomberg

Assistant Examiner:

Deming Wan

Int. Cl.
CPC ...
F03C 2/08 (2006.01); F04C 2/28 (2006.01); F01C 1/10 (2006.01); F04C 18/10 (2006.01); F04C 2/08 (2006.01); F04C 2/10 (2006.01);
U.S. Cl.
CPC ...
F04C 18/10 (2013.01); F04C 2/084 (2013.01); F04C 2/102 (2013.01);
Abstract

An internal gear pump includes a pump rotor () in which a meshing point between an inner rotor () having n teeth and an outer rotor () having (n+1) teeth is located rearward, in a rotational direction of the rotor, relative to an eccentric axis (CL) along which a center (O) of the inner rotor and a center (O) of the outer rotor are disposed. A tooth-surface curve of the outer rotor () near a meshing section thereof is formed by duplicating thereto a tooth-surface shape of the inner rotor () near a meshing section thereof.

Find Patent Forward Citations

Uozumi, Masato. (2017). Internal gear pump (U.S. Patent No. 9541085). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9541085

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

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