One-way isolator for high torque devices
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United States of America Patent
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Sep 20, 2011
Grant Date -
Jul 9, 2009
app pub date -
Apr 26, 2007
filing date -
Apr 26, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A one way isolator for high torque devices, such as alternator-starters, driven by a flexible drive means includes a hub and a sheave each of which includes at least one stop member. The hub and sheave are linked by a isolating spring and, via a bearing and/or bushing, can rotate with respect to each other to provide isolation, through the spring, from torque variations when torque is transferred from the flexible drive means to the device. When substantial amounts of torque are transferred from the device to the flexible drive means, the sheave rotates with respect to the hub to bring the stop members into contact such that the isolator then acts like a solid pulley to facilitate the transfer of the torque from the device.
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