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. 08, 2001
Filed:
Dec. 22, 1999
Rikuro Obara, Kitasaku-gun, JP;
Seiichi Matsuura, Kitasaku-gun, JP;
Minebea Co., Ltd., Kitasaku-gun, JP;
Abstract
Between rotation shaft,and the frame,two bearings,having inner races,narrower in width compared with outer races,are disposed and each of end faces of outer races,is made to abut each other. Since in general, the outer race and the inner race are secured in the size precision, by making each end faces of the outer race to abut each other, an assembling precision between two bearings,is secured. Further, spacing secured between inner races,enables to displace the inner ring,minutely due to the preload to be given to the end face of the inner races,at the time of assembling of the spindle motor, which is expected to absorb a minute play inevitable to the bearings, as a result to increase the rotation precision after completion of the spindle motor.