Capillary seal with fill pool

Details Capillary seal with fill pool Capillary seal with fill pool

2006-06-06

2006-06-06

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C384S132000

Reexamination Certificate

active

07056026

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.

REFERENCES:
patent: 5658080 (1997-08-01), Ichiyama
patent: 6814492 (2004-11-01), Beckers
patent: 6939046 (2005-09-01), Oelsch

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