Torque transmission device
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jan 12, 2012
app pub date -
Jun 28, 2011
filing date -
Jul 6, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A torque transmission device includes: a first cover that has a cylindrical shape and that is attached to a shaft and covers an outer periphery of a sleeve; a second cover that has a cylindrical shape and that is attached to the sleeve and covers an outer periphery of the first cover; a seal that fills an annular space between the first cover and the sleeve; and a ring that is installed in a circumferentially continuous groove formed in one of an outer peripheral surface of the first cover and an inner peripheral surface of the second cover, and that is slidable on the other one of the outer peripheral surface of the first cover and the inner peripheral surface of the second cover. A labyrinth seal is constructed between the ring and the groove.
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