Fluid-activated shaft seal
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United States of America Patent
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Nov 9, 2010
Grant Date -
Dec 11, 2008
app pub date -
Jun 6, 2008
filing date -
Nov 22, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
Systems and methods associated with a fluid-activated shaft seal are provided. The systems, which feature multiple components, include a support component defining an exterior surface, a carrier component including an interior surface to slideably engage the exterior surface of the support component, and a seal disposed relative to the carrier component. The seal includes a lip portion and a fluid-responsive gel material that expands when exposed to a fluid to urge the lip portion towards or into contact with a shaft. The gel material contracts in the absence of the fluid to form or increase the size of a gap between the shaft and the lip portion. Methods of assembling and installing such a system are also described.
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