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. 09, 2005
Filed:
Jun. 03, 2004
Hisayuki Furuse, Kanagawa, JP;
Hisayuki Furuse, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
In a two rotor signal stator type electric motor, there is defined a bearing lubricating structure. The bearing lubricating structure comprises an oil flow passage that is defined at a rear end portion of the motor and is supplied with a lubrication oil under operation of the motor. Within the oil flow passage, there are arranged a first bearing that is operatively arranged between a rotation shaft of an outer rotor and a rotation shaft of an inner rotor and a second bearing that is operatively arranged between a rotor rear disc of the outer rotor and a fixed stator rear disc of a stator. A first oil distribution passage is exposed to a radially inner part of the oil flow passage to permit a lubrication oil flow from the oil flow passage toward the stator and inner rotor, and a second oil distribution passage is exposed to a radially outer part of the oil flow passage to permit a lubrication oil flow from the oil flow passage toward the stator and outer rotor.