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:
Feb. 10, 2026
Filed:
Jul. 11, 2023
Meidensha Corporation, Tokyo, JP;
Yohei Takahashi, Tokyo, JP;
Takahiko Oishi, Tokyo, JP;
MEIDENSHA CORPORATION, Tokyo, JP;
Abstract
A coolant flow passage structure is provided in a rotating machine capable of reducing the pressure loss of a coolant flowing through a flow passage, thereby securing a smooth flow of the coolant and improving efficiency. A coolant flow passage structure on a cylindrical frame in a motor and cooling the motor includes a flow passage main body in a wall portion of the frame to extend while meandering, and a bypass flow passage to extend along a circumferential direction of the frame at one of both end portions in an axial direction of the frame. The bypass flow passage communicates front side reverse flow passage portions with each other. The flow passage main body includes straight flow passage portions disposed in a circumferential direction of the frame, and reverse flow passage portions connected to the end portions of the straight flow passage portions.