Seal chain
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United States of America Patent
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Mar 4, 2014
Issued Date -
N/A
app pub date -
May 12, 2011
filing date -
Jun 1, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
There is provided a seal chain in which sealing performance of a seal mechanism is enhanced so as to be able to deal with a displacement radially of the connecting pins, and to be able to keep a sealing function for a long period of time even if highly fluid lubricant is used. Each seal mechanism comprises an inner circumferential ring fitted and fixed onto the end of the bush an annular seal receiving member disposed on the outer peripheral side of the inner circumferential ring so as to be movable in the radial direction and attached with an annular member enclosing a radial seal on the side of the outer link plate, a bellows seal extending between the inner circumferential ring and the annular seal receiving member and deformable in the radial direction and a seal ring provided on the side of the outer link plate facing to the inner link plate at the position corresponding to the annular radial sealing member concentrically with the pin to abut with the annular sealing member to seal the lubricant.
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