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:
Oct. 22, 2013
Filed:
Apr. 07, 2010
Andreas Kull, Donaueschingen, DE;
Andreas Kull, Donaueschingen, DE;
Minebea Co., Ltd., Nagano-Ken, JP;
Abstract
A fluid dynamic bearing including a bearing bush having a central bearing bore in which a shaft is rotatably supported. Surfaces of the shaft and of the bearing bore that face each other are separated from one another by a bearing gap filled with a bearing fluid. A first radial bearing section and a second radial bearing section are disposed along the bearing gap, between which a separator section is disposed. The width of the bearing gap varies with its axial length. The bearing gap has a first inner width iband a second inner width ibin the region of the first and of the second radial bearing section on the sides facing the separator section, a first outer width aband a second outer width abon the sides remote from the separator section. According to the invention, the differences resulting from the inner widths and the outer widths, ib−aband ib−ab, lie in an interval of a−t to a+t, where a is greater than zero and t is greater than a.