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:
Feb. 03, 2015
Filed:
Dec. 20, 2012
Applicant:
Seagate Technology Llc, Cupertino, CA (US);
Inventors:
Kevin Richard Heim, Eden Prairie, MN (US);
Kirill A. Rivkin, Edina, MN (US);
Eric Meloche, Burnsville, MN (US);
John Wolf, Maple Grove, MN (US);
Assignee:
Seagate Technology LLC, Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/09 (2006.01); G11B 5/127 (2006.01); G11B 5/012 (2006.01); G11B 5/02 (2006.01); G11B 5/31 (2006.01);
U.S. Cl.
CPC ...
G11B 5/012 (2013.01); G11B 5/02 (2013.01); G11B 5/3123 (2013.01);
Abstract
A writer assembly having two separately driven write coils allows a combined write field generated by the writer assembly to be fine turned and optimized for a particular application. Two preamplifiers may be incorporated into a printed circuit board in order to separately drive the write coils. In other implementations, there may be more than two write coils and corresponding preamplifiers.