Gripper assembly

Details Gripper assembly Gripper assembly

1988-10-13

1990-03-27

Cherry, Johnny D.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

294116, 294907, 901 37, 901 47, B25J 1508, B25J 1902

Patent

active

049114905

ABSTRACT:
A gripper assembly contains within its cylindrical tubular housing a piston and a rotatably supported finger assembly having a push rod and gripper fingers. The push rod is pressed rotatably against the piston through a thrust bearing by a spring. As the piston pushes the push rod against the biasing force of the spring, the motion of the push rod causes the gripper fingers to close. Position of the object to be gripped can be detected through a fiber optic light guide passing through the piston and the push rod.

REFERENCES:
patent: 2800355 (1957-07-01), Vinner et al.
patent: 3012811 (1961-12-01), Sandrock
patent: 3108835 (1963-10-01), Rowekamp
patent: 3163401 (1964-12-01), Johnston et al.
patent: 3386297 (1968-06-01), Willis
patent: 4211123 (1980-07-01), Mack
patent: 4340249 (1982-07-01), Bucklew

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