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. 10, 2018
Filed:
May. 24, 2016
Sae Magnetics (H.k.) Ltd., Shatin, N.T., HK;
Headway Technologies, Inc., Milpitas, CA (US);
Ellis Cha, San Ramon, CA (US);
Sindy Yeung, San Ramon, CA (US);
Penny Wan Ting Looi, Shatin, HK;
Ben Kwun Pan Ng, Kwun Tong, HK;
SAE Magnetics (HK) Ltd., Shatin, N.T., HK;
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
A slider design for a hard disk drive (HDD) features an air-bearing surface (ABS) topography with arrays of micro-dots formed on bases of a multiplicity of cavities at different depths. The design eliminates the accumulation of hydrocarbons (e.g., spindle oil and disk lubricant) deposits in regions of air stagnation within the cavities where backflows and foreflows of air meet and cancel during HDD operation. The micro-dots are small raised regions of various shapes having sizes and spacings in the range between 2 and 100 microns and, in a preferred embodiment, heights of 0.15 microns above the cavity bases.