SEALING DEVICE AND SHOCK ABSORBER WITH THE SEALING DEVICE
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United States of America Patent
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Issued Date -
Jul 24, 2014
app pub date -
Oct 19, 2012
filing date -
Nov 1, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A sealing device adapted to seal an outer periphery of a shaft member inserted into a tubular member includes a dust seal lip arranged on an outer side of the tubular member and an oil seal lip arranged on an inner side of the tubular member to form a space for accumulating working fluid between the oil seal lip and the dust seal lip. The dust seal lip includes a main lip portion and an auxiliary lip portion formed to be closer to the oil seal lip than the main lip portion. A maximum value of a surface pressure gradient absolute value of the inner side in the auxiliary lip portion is set to be larger than that of a surface pressure gradient absolute value of the outer side in the auxiliary lip portion.
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