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, 2004
Filed:
Mar. 15, 2002
Sharat Batra, Wexford, PA (US);
Gregory Parker, Warrendale, PA (US);
Petrus Antonius Van der Heijden, Cranberry Township, PA (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A single pole magnetic recording head is provided according to the present invention for perpendicular magnetic recording on a recording medium. The magnetic recording head includes a main magnetic pole having a first end positionable adjacent the recording medium and a second end spaced from the first end. A coil is magnetically coupled to the main magnetic pole for producing a write flux. The magnetic recording head further includes a magnetic return pole forming first and second return paths for the magnetic flux. The magnetic return pole includes first and second return poles disposed on opposite sides of, and spaced from, the main magnetic pole, and a magnetic via connecting the first and second poles and extending over the main magnetic pole forming a back shield. The main magnetic pole is isolated from the magnetic return pole by a control gap of non-magnetic material between the second end of the main magnetic pole and the magnetic via to effectively isolate the main magnetic pole from the magnetic return pole.