logo

For the Inventor, By the Inventor

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 11136975 B1

PDFFull Text
Date of Patent:
Oct. 05, 2021

Filed:

Aug. 07, 2017

Drive apparatus having oil passage defined in stopper body

Applicant:

Nidec Corporation, Kyoto, JP;

Inventors:

Yasuo Yamaguchi, Kyoto, JP;

Yuki Ishikawa, Kyoto, JP;

Assignee:

NIDEC CORPORATION, Kyoto, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Mary Davis

Assistant Examiner:

Paul W Thiede

Int. Cl.
CPC ...
F04C 2/10 (2006.01); F04C 15/00 (2006.01); F04C 2/08 (2006.01); H02K 11/225 (2016.01); F16N 7/40 (2006.01); F04C 15/06 (2006.01); H02K 5/20 (2006.01); H02K 9/19 (2006.01); H02K 1/12 (2006.01); F04C 11/00 (2006.01); F04C 13/00 (2006.01); H02K 1/22 (2006.01); H02K 7/00 (2006.01); F16K 17/04 (2006.01); F16N 1/00 (2006.01); F16N 13/20 (2006.01); H02K 9/193 (2006.01);
U.S. Cl.
CPC ...
F04C 2/10 (2013.01); F04C 2/084 (2013.01); F04C 2/102 (2013.01); F04C 15/0088 (2013.01); F04C 15/0096 (2013.01); F04C 15/06 (2013.01); F16N 7/40 (2013.01); H02K 5/20 (2013.01); H02K 9/19 (2013.01); H02K 11/225 (2016.01); F04C 2/103 (2013.01); F04C 11/008 (2013.01); F04C 13/002 (2013.01); F04C 13/005 (2013.01); F04C 2210/14 (2013.01); F04C 2210/206 (2013.01); F04C 2240/30 (2013.01); F16K 17/04 (2013.01); F16N 1/00 (2013.01); F16N 13/20 (2013.01); F16N 2210/18 (2013.01); F16N 2280/00 (2013.01); H02K 1/12 (2013.01); H02K 1/22 (2013.01); H02K 7/003 (2013.01); H02K 9/193 (2013.01);
Abstract

A pump includes an external gear, an internal gear surrounding the external gear to mesh with the external gear, a pump chamber to house the internal gear and the external gear, a suction inlet to suck an oil into the pump chamber, and a discharge outlet to discharge the oil from inside the pump chamber. The housing includes an outer cover having the pump chamber defined therein, and a first oil passage defined in the outer cover and connected to the discharge outlet. The motor shaft includes a second oil passage connected to the first oil passage, and a first through hole to connect the second oil passage to the motor shaft. The second oil passage opens into the first oil passage at the end portion of the motor shaft.

Find Patent Forward Citations

Loading…