Handling: hand and hoist-line implements – Grapple – Inflatable
Patent
1987-10-30
1988-12-20
Cherry, Johnny D.
Handling: hand and hoist-line implements
Grapple
Inflatable
92 92, 414 7, 901 21, 901 22, 901 37, 901 39, B25J 1512, B25J 1806, B66C 146, F15B 1510
Patent
active
047921730
ABSTRACT:
A fluid actuated limb comprising an elongate flexible core member having a first plurality of bellows extending parallel to the core member and being radially spaced from the core member around substantially the entire circumference thereof. A second plurality of bellows are radially spaced from the core member and helically wrapped around the length of the core member in a first helical direction, and a third plurality of bellows are radially spaced from the core member and helically wrapped around the length thereof in a second helical direction opposite to the first helical direction. Fluid air pressure selectively applied to the limb results in limb movements including extension and contraction, bending with resistance to torsion, right hand and left hand rotation, and combinations of the aforementioned movements.
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Wilson and Orgill publication entitled "Linear Analysis of Uniformly Stressed, Orthotropic Cylindrical Shells", Journal of Applied Mechanics, Jun., 1986, vol. 53, pp. 249-256.
Cherry Johnny D.
Duke University
Jenkins Richard E.
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