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. 18, 2007
Filed:
Jun. 15, 2005
Peter Michael Baumgart, San Jose, CA (US);
Malk Duwensee, Del Mar, CA (US);
Bernhard E. Knigge, San Jose, CA (US);
Peter Michael Baumgart, San Jose, CA (US);
Malk Duwensee, Del Mar, CA (US);
Bernhard E. Knigge, San Jose, CA (US);
Hitachi Global Storage Technologies Netherlands, B.V., Amsterdam, NL;
Abstract
A method for simultaneously measuring contact potential and slider body clearance in a hard disk drive. In embodiments of the present invention, a plurality of direct current (DC) pulses are applied between a slider body and a hard disk of a magnetic disk drive. The contact potential voltage between the slider body and the hard disk is determined in response to applying the plurality of direct current (DC) pulses. The voltage of the plurality of direct current (DC) pulses is increased until a contact between the slider body and the hard disk is detected.