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:
Mar. 30, 2004
Filed:
Jan. 20, 2000
Minebea Co., Ltd., Kitasaku-Gun, JP;
Abstract
If the motor housing is manufactured with a resin, the housing becomes possible to be manufactured by injection molding, so that the housing can be intended to lower the manufacturing cost by a mass production. Further, the counter measures for insulation such as covering a copper wire with an insulating tape, interposing an insulator to an opening of the housing installing an insulating shim between the coil and the housing become unnecessary. As a result, it becomes possible to expect a cost down of the spindle motor due to the reduction of the cost of the parts for insulating members and the mounting processes. And, further, since a vibration transmitted from the rotor through the bearing and a vibration caused by an electric switching of the stator etc. are diminished due to elastic absorbing function of the housing , rotation noise of the spindle motor can be reduced.