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. 28, 2007
Filed:
Jul. 30, 2004
Michael Robert Hatchett, San Jose, CA (US);
Daniel Robert Stacer, Morgan Hill, CA (US);
Michael Robert Hatchett, San Jose, CA (US);
Daniel Robert Stacer, Morgan Hill, CA (US);
Hitachi Global Storage Technologies Netherlands, BV, Amsterdam, NL;
Abstract
A top pole piece of a voice coil motor (VCM) is attached to a hard disk drive cover without screw fasteners and with minimal loss of VCM magnetic flux capacity. A pair of leaf springs are supported at both ends, rather than by cantilever, to more uniformly distribute mechanical stress throughout the springs so that less space is required to achieve the same transverse load as a cantilevered spring of the same profile. The smaller space envelope required by this design minimizes the loss of magnetic flux capacity of the VCM. Each leaf spring has two integral legs, central portions of which are rigidly fastened to the drive cover. The end of each leg opposite the central portion applies a force against the cover in the assembled disk drive.