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:
Sep. 24, 2002
Filed:
Jul. 06, 2001
Tadashi Akahori, Kitasaku-gun, JP;
Minebea Co., Ltd., Kitasaku-gun, JP;
Abstract
In a spindle motor in which its weight is decreased while maintaining the rigidity of a bearing to a large value, the widthwise dimension of a bearing cartridge assembly is set so that the upper outer ring end portion of the outer ring of the bearing cartridge assembly protrudes from a hub main body A. Since the lengthwise dimension of a hub A is smaller than that of a prior art, the weight and cost can be decreased that much. Further, the lengthwise dimension of the hub A is smaller than that of the prior art, a space portion is increased and the space portion can be employed as a space for arranging various kinds of members. Since the upper outer ring end portion protrudes from the hub main body A, fitting pressure is not exerted on the upper outer ring end portion of the outer ring 12 upon fitting, so that the generation of unnecessary deformation or the like can be avoided.