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:
Jul. 09, 2002
Filed:
Oct. 23, 1998
Charles R. Patton, III, Murrieta, CA (US);
Barry L. Klein, Trabuco Canyon, CA (US);
Western Digital Technologies, Inc., Lake Forest, CA (US);
Abstract
A disk drive includes a head disk assembly having a housing including a first surface area, and a strain transducer for producing a strain signal representing strain in the first surface area due to a mechanical shock on the disk drive. The strain transducer includes a first electrode, a second electrode, and a volume of piezosensitive material defining a second surface area. The piezosensitive material is disposed between the first electrode and the second electrode. The first surface area overlaps the second surface area. The strain transducer further includes means for securing the first electrode and the piezosensitive material to the first surface area such that the strain in the first surface area is replicated in the piezosensitive material. The disk drive includes means responsive to the strain signal for controlling a write operation in the disk drive.