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:
Nov. 30, 2004
Filed:
Jun. 29, 2001
Hiroshi Yoshikawa, Kitasaku-gun, JP;
Hiroshi Sakaba, Kitasaku-gun, JP;
Minebea Co., Ltd., Kitasaku-gun, JP;
Abstract
In an outer rotor type spindle motor in which a shaft and a stator are supported by and fixed to a flange , damping members and are interposed between the flange and the stator and between the flange and the shaft , or the flange itself is formed of a damping material. Thus, electromagnetic vibration from the stator or rotating vibration from the shaft are damped and absorbed by the damping members and . Accordingly, the generation of vibration or noise in the flange can be prevented which is caused by the transmission of the electromagnetic vibration generated on the stator due to an alternating current supplied to a stator coil or by the transmission of the rotating vibration of a rotor received by the shaft to the flange.