Seal device for hydraulic circuit
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United States of America Patent
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Aug 1, 2017
Grant Date -
Aug 14, 2014
app pub date -
Aug 30, 2011
filing date -
Aug 30, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
In a seal device for a hydraulic circuit, in which an oil passage that supplies hydraulic oil to or discharges the hydraulic oil from a hydraulic actuator operated by hydraulic pressure is formed over at least two members that relatively move, and a seal member that seals a gap between the two members in a liquid-tight manner is disposed in an interior of a groove section that is formed in at least either one of the two members, a communication section that allows the groove section to communicate with any portion of the oil passage such that the hydraulic oil in the interior of the groove section moves along with supply of the hydraulic oil to or discharge of the hydraulic oil from the hydraulic actuator is formed.
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