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:
Apr. 14, 2009
Filed:
Apr. 28, 2006
Martin Engesser, Donaueschingen, DE;
Stefan Schwamberger, Lohsa Ot. Hermsdorf, DE;
Martin Engesser, Donaueschingen, DE;
Stefan Schwamberger, Lohsa Ot. Hermsdorf, DE;
Minebea Co., Ltd., Nagano-ken, JP;
Abstract
The invention relates to a fluid dynamic bearing system that has a stationary sleeve, a stationary shaft disposed in the sleeve and bearing disks disposed on the sleeve and shaft which form an annular disk-shaped space between each other in which an annular disk-shaped component is disposed. A bearing gap filled with a bearing fluid is formed between the stationary and the rotating bearing construction. The bearing system further comprises at least one radial bearing formed between the outer circumference of the shaft and the inner circumference of the annular disk-shaped component, at least two axial bearings formed by the two end faces of the annular disk-shaped component and the first end faces of the bearing disks opposing these; and capillary seals to seal the two open ends of the bearing gap, at least one capillary seal comprising a reservoir that is at least partly filled with bearing fluid and is formed between the surfaces opposing each other of the rotor hub, or a component connected to the rotor hub, and an end face of one of the bearing disks.