Device and method for gripping at least one elongated element

Details Device and method for gripping at least one elongated element Device and method for gripping at least one elongated element

2006-05-30

2006-05-30

Kramer, Dean J. (Department: 3652)

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

C294S106000, C414S731000, C414S739000

Reexamination Certificate

active

07052060

ABSTRACT:
Method and device for gripping one or more elongated element(s), which device includes two main gripping arms (1, 2) adapted to hold the element(s) between them. At least one first hydraulic cylinder (6, 7) is provided for moving the main gripping arms relative to one another. The device also has at least one auxiliary gripping arm (3, 4) and at least one second hydraulic cylinder (8, 9) for moving the auxiliary gripping arm relative to the main gripping arms in order to press the element(s) against the main gripping arms. The second hydraulic cylinder (8, 9) is connected operationally to the first hydraulic cylinder (6, 7) in such a way that the movement of the auxiliary gripping arm (3, 4) is initiated only when the piston of the first hydraulic cylinder reaches a predetermined position.

REFERENCES:
patent: 3263834 (1966-08-01), La Tendresse
patent: 3371952 (1968-03-01), Hunger
patent: 3501035 (1970-03-01), Whiting
patent: 3631995 (1972-01-01), Jones et al.
patent: 3741517 (1973-06-01), Pogonwski
patent: 3782567 (1974-01-01), Likas et al.
patent: 4669940 (1987-06-01), Englehardt et al.
patent: 5201838 (1993-04-01), Roudaut
patent: 5516174 (1996-05-01), Squyres
patent: 5863086 (1999-01-01), Christenson

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