Actuator body, method for driving actuator, and gripping hand using the same
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United States of America Patent
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May 21, 2019
Grant Date -
Jan 18, 2018
app pub date -
Jul 3, 2017
filing date -
Jul 13, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
An actuator body includes a tube that has a space therein and is wound spirally about a first axis. The tube has a plurality of first portions and a plurality of second portions, the tube has one or more grooves in at least one of an outer circumferential surface and an inner circumferential surface thereof, and the one or more grooves are provided spirally about a longitudinal axis of the tube, the space is in contact with the inner circumferential surface, and the outer circumferential surface is a surface opposite to the inner circumferential surface, each of the plurality of first portions has higher torsional rigidity than each of the plurality of second portions, the plurality of first portions are aligned along the first axis, and the plurality of first portions do not overlap the plurality of second portions.
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