Lubricated Shaft Seal
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United States of America Patent
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N/A
Issued Date -
Jul 11, 2013
app pub date -
Jan 10, 2012
filing date -
Jan 10, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A seal for sealingly engaging a shaft or other rotatable element includes a sealing portion having a lubricant side and a non-lubricant side and extending generally inwardly toward the shaft when the seal is installed thereon. The sealing portion has an active lip portion including a shaft engagement surface engageable with the shaft and a lubricant vent extending through at least a portion of the active lip portion. The lubricant vent provides fluid communication between opposite sides of the active lip portion, thus maintaining adequate lubrication between the shaft engagement surface and the shaft, avoiding lubricant coking, or other degradation, and extending seal life.
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