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:
Apr. 04, 2000
Filed:
Nov. 12, 1997
Mark J Schaenzer, Eagan, MN (US);
He Huang, Eden Prairie, MN (US);
Seagate Technology, Inc., Scotts Valley, CA (US);
Abstract
A magnetic recording head for use in a disc drive system including a rotating disc has a slider body and a transducer on the slider body for reading and/or writing data from and/or to the disc. A piezoelectric sensor is provided on the slider body and produces a signal representing a level of interference between the slider body and the rotating disc. A method of predicting a head crash includes establishing a nominal level of interference between the magnetic recording head and the rotating disc and establishing a threshold interference level difference. The level of interference between the magnetic recording head and the rotating disc represented by the signal provided by the piezoelectric sensor is monitored during operation of the disc drive system. A predicted head crash is indicated when the level of interference between the magnetic recording head and the rotating disc is different from the nominal level of interference by more than the threshold.