Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Locking device
Reexamination Certificate
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.
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Lindgren Gunnar
Strandberg Lennart
Vigholm Bo
Kramer Dean J.
Novak Druce & Quigg LLP
Volvo Construction Equipment AB
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