Gripper device

Details Gripper device Gripper device

1997-06-02

1999-03-23

Cherry, Johnny D.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

294115, B25J 1508

Patent

active

058849521

ABSTRACT:
A gripper device is provided for gripping and releasing objects. The device incorporates two gripper fingers which are opened and closed in response to the movement of a piston rod. The gripper fingers move from the open to the closed position as the piston rod moves from the retracted to the extended position. The gripper fingers are connected to a connector block by chain links which act as a toggle. When in the closed position, the gripper fingers are locked and can only be unlocked by a retraction of the piston rod with sufficient force to overcome the over-centre toggle arrangement of the chain links.

REFERENCES:
patent: 2800355 (1957-07-01), Vinner et al.
patent: 3512824 (1970-05-01), Bautz et al.
patent: 3945676 (1976-03-01), Asamoto
patent: 4185866 (1980-01-01), Wittwer
patent: 4234223 (1980-11-01), O'Neil
patent: 4304433 (1981-12-01), Langowski
patent: 4566727 (1986-01-01), Yuda
patent: 4728137 (1988-03-01), Hamed et al.
patent: 5072652 (1991-12-01), Blatt

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