Rotation shaft seal
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United States of America Patent
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-
Feb 7, 2006
Grant Date -
Dec 4, 2003
app pub date -
May 22, 2003
filing date -
May 30, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A rotation shaft seal to seal liquid, which is poor of lubricant liquid, stably for a long time. In a rotation shaft seal, provided with a rubber lip portion having a sliding inner peripheral edge portion which contacts a rotation shaft to seal liquid on a pressure chamber side, a lubricant liquid well portion is disposed near the sliding inner peripheral edge portion.
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