Grip device

Details Grip device Grip device

1985-10-28

1987-05-26

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Load shifting

294 991, 294907, 310332, 310800, 901 36, 901 46, B25J 1512

Patent

active

046679979

ABSTRACT:
In a grip device wherein bimorph type piezoelectric elements are employed for fingers or claws for grasping a workpiece, a grip device comprising bimorph type piezoelectric elements which are mounted on a grip body and which form finger or claws, a voltage feed circuit which is connected to the piezoelectric elements in order to bend and deform the piezoelectric elements, and a control circuit is connected to an end of the piezoelectric elements providing an output signal for controlling a grasping force for a workpiece.

REFERENCES:
patent: 3253853 (1966-05-01), Loyer et al.
patent: 3726557 (1973-04-01), Ventre
patent: 3866966 (1975-02-01), Skinner
8th International Symposium on Industrial Robots, vol. 1, Band 1, Jun. 1, 1978, "Principle of a Piezo-Electric Micro Manipulator with Tactile Sensibility", by Y. Umetani, pp. 406-410.

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