ROTATING DEVICE
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United States of America Patent
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N/A
Issued Date -
Nov 13, 2014
app pub date -
May 5, 2014
filing date -
May 9, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A rotating device comprises: a rotor comprising: a hub on which a magnetic recording disk is to be mounted; a shaft extending along a rotational axis of the hub, one side of the shaft being fixed to the hub; a flange surrounding the other side of the shaft, the flange being fixed to the shaft; and a shaft support member surrounding the shaft and rotatably supporting the shaft. A lubricant agent is interposed between the shaft and the shaft support member. The gas-liquid interface of the lubricant agent is provided in a gap between the shaft and the shaft support member. The hub includes a surrounding portion which surrounds the shaft support member. A gap defined between the surrounding portion and the shaft support member communicates with the gas side of the gas-liquid interface. The gap thus defined is positioned radially inward from the outer face of the flange.
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