Seal device
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Mar 18, 2014
filing date -
Mar 27, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
There is provided a seal device having a seal ring structure assemblable without lowering the assembling efficiency of CVT, and free from oil leakage when an oil pump is not operated with an engine stopped, namely when oil pressure is not applied to the seal ring, which comprises a combined seal ring comprising an endless resin ring having an outer peripheral surface in slidable contact with an inner peripheral surface of an outer member, and a coil expander pushing the resin ring toward its outer peripheral surface and side surface, the coil expander being arranged in a corner recess portion of the resin ring between its pressure-receiving side surface and its inner peripheral surface, and an inner peripheral side of the combined seal ring being separate from a bottom of the seal ring groove.
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