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:
May. 18, 2004
Filed:
Jul. 26, 2001
Kazumasa Ide, Hitachiohta, JP;
Kenichi Hattori, Hitachi, JP;
Akiyoshi Komura, Hitachi, JP;
Mitsunori Yamashina, late of Hitachi, JP;
Tadashi Sonobe, Iwaki, JP;
Akitomi Semba, Hitachi, JP;
Junji Sato, Hitachi, JP;
Ryoichi Shiobara, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A rotating electric machine having a plurality of ventilating passages formed between a stator frame and a stator iron core, a cooler which cools a coolant is provided at least in one ventilating passage, communicating with a central portion of the stator iron core, of the plurality of ventilating passages, and a ventilating circuit in which the coolant cooled by the cooler is allowed to flow to the central portion of the stator iron core in a direction from an outer peripheral side to an inner peripheral side of the stator iron core via the at least one ventilating passage which communicates with the central portion of the stator iron core.