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:
Jan. 06, 2015
Filed:
Apr. 22, 2011
Satoru Ohashi, Tokyo, JP;
Norihisa Handa, Tokyo, JP;
Shusaku Yamasaki, Tokyo, JP;
Masahiro Tanida, Tokyo, JP;
Koushi Ishimoto, Tokyo, JP;
Motoaki Shito, Tokyo, JP;
Satoru Ohashi, Tokyo, JP;
Norihisa Handa, Tokyo, JP;
Shusaku Yamasaki, Tokyo, JP;
Masahiro Tanida, Tokyo, JP;
Koushi Ishimoto, Tokyo, JP;
Motoaki Shito, Tokyo, JP;
IHI Corporation, Tokyo, JP;
Abstract
On an inner circumference side of a stator fixed in an inner housing, a rotor is arranged. The rotor rotates through a bearing with respect to a center shaft that is a stationary shaft fixed to outer housings. Oil introduced into a rotor oil inlet path in the center shaft flows through a communication path and a clearance on an outer circumference of the center shaft into an oil path in the rotor. The oil flowing through the oil path cools a permanent magnet, lubricates the bearing, and is discharged from a rotor oil discharge port to the outside of the inner housing. The oil in the clearance is sealed with a thread seal, i.e., an inner thread formed in an inner face of an end ring and is prevented from flowing toward the bearing.