Capillary seal with fill pool
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United States of America Patent
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-
Jun 6, 2006
Issued Date -
N/A
app pub date -
Oct 14, 2003
filing date -
Apr 4, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Improved capillary sealing is provided for withstanding shock events, vibration and evaporation, for use with fluid dynamic bearings. In an aspect, minimal axial space is occupied by a fluid reservoir and the sealing system and method withstands at least 1000 G shock events. A fluid reservoir having a capillary surface is formed between diverging walls. A fluid fill pool, separate from the fluid reservoir and having a steeper angle than the fluid reservoir, is positioned adjacent to a fluid fill hole. The fill pool, having a greater diverging angle than the fluid reservoir provides an unstable region for fluid to remain and any fluid is pulled by capillary force gradient to the fluid reservoir.
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