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:
Aug. 05, 2003
Filed:
Jun. 04, 1999
Roy L. Wood, Yukon, OK (US);
Michael J. Raffetto, Scotts Valley, CA (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
The present invention provides a compressive spring sleeve to reduce disc slippage in a disc drive resulting from non-operational mechanical shock, the disc drive having data storage discs in the form of a disc stack supported on the cylindrical hub of a spindle motor which spins the disc stack at a very high rotational speed. An annular space is provided between the inner diameters of the bores of the discs and the spacers and the outer diameter of the spindle motor hub, and the compressive spring sleeve is disposed in the annular space. The compressive spring sleeve has a spring body portion having radially extending and spaced apart peaks disposed about the circumference of the spring body portion to press against the discs at their inner diameters and thereby exert a restraining radial force against the discs so that the discs are maintained in a fixed concentric relationship relative to the spindle motor hub when a non-operational shock is exerted on the disc drive.