Handling: hand and hoist-line implements – Grapple – Load shifting
Patent
1987-02-25
1988-03-15
Marbert, James B.
Handling: hand and hoist-line implements
Grapple
Load shifting
294106, 294907, 901 35, B66C 316, F15B 1342
Patent
active
047308613
ABSTRACT:
A positive indication of the closure state of a fingered gripper is provided by a sensor having a first element mounted for motion responsive to the primary finger driver and a second element operable in conjunction with the first element to provide, between the two, a positive indication of the gripper state.
REFERENCES:
patent: 3843187 (1974-10-01), Shaefer, Jr. et al.
patent: 4509783 (1985-04-01), Ionescu
patent: 4541771 (1985-09-01), Beni et al.
Barry Wright Corporation
Gilbert Milton E.
Marbert James B.
Mitchell James W.
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