Variable stiffness actuator with large range of stiffness
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United States of America Patent
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Dec 12, 2017
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N/A
app pub date -
Apr 24, 2014
filing date -
Apr 24, 2013
priority date (Note) -
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Abstract
In one embodiment, a selectable-rate spring comprises a flexure bar connected to a rotatable shaft, the flexure bar having at least one arched portion. The selectable-rate spring also includes at least one rotational contactor connectable to a link member, wherein the rotational contactor rotates about an axis while maintaining contact with the arched portion of the flexure bar. As the rotational contactor rotates, it changes the connection stiffness between the rotatable shaft and the link member.
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