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. 27, 1993
Filed:
Jul. 26, 1991
Marybelle C Blakeslee, Golden, CO (US);
Richard H Dee, Louisville, CO (US);
Richard F Thornley, Fort Lauderdale, FL (US);
Storage Technology Corporation, Louisville, CO (US);
Abstract
An MR read head in which increased sensitivity is achieved by a flux path that enables an increased amount of flux that enters the MR element at its top edge on a read operation to pass through the entirety of the MR read element. This improved path is achieved by forming an extension area on the bottom inner edge of the MR read element. The extension extends through an aperture in an insulator layer to a first magnetic pole piece. This extension provides a low-impedance path that permits a higher percentage of the flux entering the MR element at its top portion to travel through the entirety of the MR element and thereby generates an increased signal output per unit of detected flux.