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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.:

US 6939046 B1

PDFFull Text
Date of Patent:
Sep. 06, 2005

Filed:

Mar. 31, 2003

Hydrodynamic bearing, spindle motor and hard disk drive

Applicant:

Juergen Oelsch, Hohenroth, DE;

Inventor:

Juergen Oelsch, Hohenroth, DE;

Assignee:

Minebea Co., Ltd., Nagano, JP;

Attorneys:

Joel Lutzker

Anna Vishev

Schulte Roth & Zabel LLP

Primary Examiner:

Thomas R Hannon

Assistant Examiner:

Colby Hansen

Int. Cl.
CPC ...
F16C032/06 ;
U.S. Cl.
CPC ...
Abstract

A hydrodynamic bearing having a shaft, which is fixedly connected at one end to a rotating component, and a bearing sleeve, which encompasses the shaft at its other free end with a slight clearance. The sleeve and the shaft form a concentric bearing gap. The shaft and/or the bearing sleeve is provided with at least one groove pattern which forms at least one radial hydrodynamic bearing. A volume equalizing cavity and at least one connecting passage connecting the bearing gap with the volume equalizing cavity extend radially outwards at an angle to the bearing gap.

Find Patent Forward Citations

Oelsch, Juergen. (2005). Hydrodynamic bearing, spindle motor and hard disk drive (U.S. Patent No. 6939046). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6939046

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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