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:
Sep. 07, 2021
Filed:
Oct. 19, 2020
Applicants:
Sae Magnetics (H.k.) Ltd., Shatin, HK;
Headway Technologies, Inc., Milpitas, CA (US);
Inventors:
Ben Ng Kwun Pan, Hong Kong, HK;
Ellis Cha, San Ramon, CA (US);
Assignees:
SAE Magnetics (H.K.) Ltd., Shatin, HK;
Headway Technologies, Inc., Milpitas, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/60 (2006.01); G11B 21/21 (2006.01); G11B 5/48 (2006.01); G11B 19/20 (2006.01);
U.S. Cl.
CPC ...
G11B 5/6082 (2013.01); G11B 21/21 (2013.01); G11B 5/4826 (2013.01); G11B 19/2009 (2013.01);
Abstract
A slider design for a hard disk drive (HDD) features a shallow cavity adjacent to a leading edge that has patterns of sub-cavities of various shapes etched into its base to reduce its original surface area. The presence of these patterns of sub-cavities significantly reduces the probability that the slider will capture particles on the surface of a rotating disk and thereby reduces the corresponding probability of surface scratches that such captured particles inevitably produce.