Apparatus and method having short stroke arcuate motion for gras

Details Apparatus and method having short stroke arcuate motion for gras Apparatus and method having short stroke arcuate motion for gras

1997-05-30

1999-03-23

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Load shifting

294 641, 294106, 294902, 901 39, B25J 1506

Patent

active

058849513

ABSTRACT:
An apparatus and method having short stroke motion for gripping and releasing an object utilizes a programmable stepper motor for controlling various short stroke, generally arcuate motions of the gripper. Gears associated with each of the at least one gripper jaws supported on a carrier shaft engage a common ring gear that is driven by drive means including the stepper motor which imparts synchronous motion of the grippers for opening and closing about the object.

REFERENCES:
patent: 4365920 (1982-12-01), Morgan
patent: 4529237 (1985-07-01), Gupta et al.
patent: 4598942 (1986-07-01), Shum et al.
patent: 4680523 (1987-07-01), Goumas et al.
patent: 4699414 (1987-10-01), Jones
patent: 4808988 (1989-02-01), Pearson
patent: 4828276 (1989-05-01), Link et al.
patent: 4955653 (1990-09-01), Beals
patent: 5215507 (1993-06-01), Bonig

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