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:
Jun. 09, 2015
Filed:
Mar. 29, 2011
Lisha Wang, Fremont, CA (US);
Tao Pan, San Jose, CA (US);
Sining Mao, Fremont, CA (US);
Zhigang Bai, Milpitas, CA (US);
Feng Liu, San Ramon, CA (US);
Zhanjie LI, Pleasanton, CA (US);
Lisha Wang, Fremont, CA (US);
Tao Pan, San Jose, CA (US);
Sining Mao, Fremont, CA (US);
Zhigang Bai, Milpitas, CA (US);
Feng Liu, San Ramon, CA (US);
Zhanjie Li, Pleasanton, CA (US);
Western Digital (Fremont), LLC., Fremont, CA (US);
Abstract
A method and system for providing a magnetic recording head is described. The magnetic recording head has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The magnetic recording head includes a main pole, at least one auxiliary pole, a nonmagnetic spacer, and at least one coil. The main pole includes a first main pole piece and a second main pole piece. The first main pole piece includes a pole tip occupying a portion of the ABS and a back edge distal from the ABS. The second main pole piece has a front surface. The auxiliary pole(s) have a front recessed from the ABS and are magnetically coupled with the main pole. The nonmagnetic spacer is between the back edge of the first main pole piece and the front surface of the second main pole piece. The coil(s) are for energizing the main pole.