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. 14, 1979
Filed:
Sep. 21, 1977
Applicant:
Inventor:
Frederick J Jeffers, Escondido, CA (US);
Assignee:
Eastman Technology, Inc., Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360113 ; 360111 ; 324249 ;
Abstract
A flux sensitive magnetic head is disclosed wherein a thin single domain magnetic film coated on a non-conductor bridges the head gap. A magnetic bias is applied to the hard axis of the film; and flux entering the gap causes the resistivity of the film to vary about a resistance reference established by the bias. The resistance variation is converted to a useful signal corresponding to the flux entering the gap.