Ryan J Lyle

US Patent:

20180336921, Nov 22, 2018

Filed:

May 4, 2018

Appl. No.:

15/971158

Inventors:

- Cupertino CA, US
Brian R. Pollock - Eden Prairie MN, US
Ryan Todd Lyle - Prior Lake MN, US
Ryan Thomas Herbison - Minneapolis MN, US
Richard Arthur Herr - Eden Prairie MN, US
Paul W. Burnett - Minneapolis MN, US

International Classification:

G11B 5/265
G11B 5/725
G11B 5/455

Abstract:

Narrow band dwell occurs when air bearings corresponding to a set of read and/or write heads within a hard disc drive remain within a fixed narrow band of one or more storage platters for an extended period of time. The air bearings displace lubricant on the storage platters and may redeposit the lubricant as droplets on the platters. The presently disclosure technology is directed to monitoring a hard disc drive for narrow band dwell, and in some implementations, implementing operations to mitigate narrow band dwell. More specifically, the presently disclosure technology may detect an overflying air-bearing slider position, apply a lubrication film displacement formula to a narrow band of the storage platter, apply a lubrication film reflow formula to one or more other narrow bands of the storage platter, and track lubrication film thickness over time in each of the narrow bands of the storage platter.