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. 21, 2020
Filed:
Mar. 08, 2019
Sae Magnetics (H.k.) Ltd., Shatin, N.T., HK;
Headway Technologies, Inc., Milpitas, CA (US);
Siu Yin Ngan, San Jose, CA (US);
Qinghua Zeng, Fremont, CA (US);
Ellis Cha, San Ramon, CA (US);
Kowang Liu, Fremont, CA (US);
Xuhui Jin, Sunnyvale, CA (US);
SAE Magnetics (H.K.) Ltd., Shatin, N.T. Hong Kong, HK;
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
A PMR read/write head configured for thermally assisted recording (TAMR) includes thermally active bumper pads formed to each side of a write element to provide enhanced touchdown (TD) protection to the write head element where it emerges adjacent to the plasmon near-field spot produced by the TAMR apparatus. The bumper pads are disposed about the write head and absorb heat energy generated by active heating elements, the write current and the energy generated by the TAMR apparatus. Absorption of this energy causes the bumper pads to expand and protrude outward from the slider ABS to protect the read/write head from both intentional and unanticipated touchdown events. The PMR read/write head is then mounted on a slider and the assembly is incorporated into a hard disk drive (HDD).