METHOD FOR REMOTE MECHANISM ACTUATION AND EXOSKELETON APTIC INTERFACE BASED THEREON
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United States of America Patent
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Issued Date -
Aug 4, 2011
app pub date -
Aug 31, 2009
filing date -
Oct 31, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for actuating a mechanism imposing a prefixed relative movement between a first and a second rigid link and a hand exoskeleton obtained by utilizing the method. The mechanism includes revolute joints and may be a parallelogram mechanism, a pantograph remote center of rotation mechanism, or a multiple-degrees-of-freedom mechanism. The method provides coaxially arranging at one or more selected revolute joints a number of idle pulleys which are greater than the number of degrees of freedom of the mechanism, the first of the selected revolute joints preferably having its rotation axis fixed with respect to the rigid link; the method also provides arranging an inextensible cable between a traction point and a terminal point on the mechanism or on the second rigid link. By pulling the inextensible cable at the traction point, a multiplied torque is produced which is the sum of singular torques produced by the inextensible cable at each idle pulley, the multiplied torque causing a relative movement between the links.
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