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:
Jan. 31, 2017
Filed:
Mar. 25, 2016
Western Digital (Fremont), Llc, Fremont, CA (US);
Peng Luo, San Ramon, CA (US);
Yunfei Li, Fremont, CA (US);
Zhigang Bai, Fremont, CA (US);
Hai Sun, Milpitas, CA (US);
Feng Liu, San Ramon, CA (US);
Zhanjie Li, Pleasanton, CA (US);
WESTERN DIGITAL (FREMONT), LLC, Fremont, CA (US);
Abstract
A magnetic write apparatus has a media-facing surface (MFS), a pole, side shield(s), a side gap and coil(s) for energizing the pole. The pole includes main and assist portions. The main portion is ferromagnetic, includes a pole tip and includes side surface(s) having a flare angle from the MFS. The pole tip occupies a portion of the MFS. The flare angle is nonzero and acute. The assist portion adjoins the main portion, extends from the main portion in a direction having a component in a cross-track direction, and has a depth of not more than three hundred nanometers. The side shield(s) occupy another portion of the MFS, have a back surface, and are between the assist portion and the MFS. The assist portion is conformal with the back surface of the side shield(s). The side gap is between the main portion of the pole and the side shield(s).