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:
Dec. 21, 1999
Filed:
Apr. 01, 1997
Georg F Papst, Spaichingen, DE;
Papst Licensing GmbH & Co. KG, Spaichingen, DE;
Abstract
A disk storage device that utilizes an inner rotor spindle motor in which the spindle shaft is fixed to the disk mounting hub and rotates therewith. Support for the spindle is provided by a bearing tube that has a greater diameter and greater rigidity than the stationary shaft or post typically employed to support the disk stack in an outer rotor arrangement. The bearing tube supports the bearings in which the spindle shaft is journalled and allows wider axial spacing between the bearings, reducing spindle run out. At the same time, the bearing tube functions to entrap contaminants from the bearings within the internal motor space and reduces contamination in the clean chamber. Further, the motor elements are located outside the clean room chamber, further enhancing the cleanliness of the environment surrounding the data storage disks.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile