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:
Oct. 28, 2025
Filed:
Aug. 23, 2022
Nidec Corporation, Kyoto, JP;
Yui Watanabe, Kyoto, JP;
NIDEC CORPORATION, Kyoto, JP;
Abstract
A drive apparatus includes: a motor having a motor shaft rotatable about a motor axis; a power transmission connected to the motor shaft from one side in an axial direction; a housing having a motor housing portion accommodating the motor and a gear accommodation portion accommodating the power transmission; a channel through which a refrigerant circulates; a cooler; and a pump. The channel includes a first passage connecting a refrigerant pool in the housing and a suction port of the pump, a second passage connecting a discharge port of the pump and an inflow port of the cooler, and a third passage extending from an outflow port of the cooler to the inside of the motor housing portion. The cooler is fixed to an outside of the housing to overlap at least partially the gear accommodation portion in the radial direction above the horizontal plane including the motor axis.