Power transmission device
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United States of America Patent
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Jun 17, 2014
Grant Date -
Oct 13, 2011
app pub date -
Dec 19, 2008
filing date -
Dec 19, 2008
priority date (Note) -
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Abstract
A power transmission device includes an electromagnetic wave-shielding wall partitioning a first space and a second space adjacent to the first space and blocking propagation of an electromagnetic wave between the first space and the second space. The power transmission device also includes a first pulley arranged within the first space and a second pulley arranged within the second space. The power transmission device also includes a belt placed on the first pulley and the second pulley and extending through the electromagnetic wave-shielding wall to transmit rotational driving force between the first space and the second space. From the electromagnetic wave-shielding wall a hollow tubular member is protruded and allows the first space and the second space to communicate with each other. The belt extends through the inside of the tubular member.
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