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:
Aug. 06, 2013
Filed:
Jan. 26, 2011
Hironori Matsumoto, Hitachi, JP;
Atsushi Otake, Hitachiota, JP;
Hiroshi Morita, Mito, JP;
Junpei Kusukawa, Hitachinaka, JP;
Kinya Kobayashi, Hitachi, JP;
Junnosuke Nakatsugawa, Hitachi, JP;
Hironori Matsumoto, Hitachi, JP;
Atsushi Otake, Hitachiota, JP;
Hiroshi Morita, Mito, JP;
Junpei Kusukawa, Hitachinaka, JP;
Kinya Kobayashi, Hitachi, JP;
Junnosuke Nakatsugawa, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A totally enclosed motor which includes a rotor disposed inside a housing and a heat of the rotor is transferred to the housing, a stator disposed inside the housing and a heat of the stator is transferred to the housing, and an inner fin which is disposed in the rotor and agitates air inside the housing. The totally enclosed motor is cooled by a forced convection by an outer fan disposed outside the housing, or by a natural convention in the vicinity of an outer surface of the housing, and a shape of the rotor is different between one end side and the other end side of the rotor in an extending direction of a rotary shaft of the rotor.