Patent ID: 7052060

Claim:
A device for gripping at least one elongate element, said device comprising: two main gripping arms ( 1 , 2 ) configured to hold an elongate element therebetween and at least one main hydraulic cylinder ( 6 , 7 ) that moves the main gripping arms relative to one another; at least one auxiliary gripping arm ( 3 , 4 ); and, at least one auxiliary hydraulic cylinder ( 8 , 9 ) for moving the auxiliary gripping arm relative to the main gripping arms to press a gripped elongate element against the main gripping arms; and wherein said main hydraulic cylinder ( 6 , 7 ) comprises an opening ( 15 ), to which a main hydraulic line ( 17 ) is connected, said opening being located in the main hydraulic cylinder so that a piston of the main hydraulic cylinder ( 6 , 7 ) passes thereby, and the opening ( 15 ) defines a predetermined piston position and said auxiliary hydraulic cylinder is operationally connected to the main hydraulic cylinder ( 6 , 7 ) and is configured so that movement of the auxiliary gripping arm ( 3 , 4 ) is initiated only when the piston of the main hydraulic cylinder reaches the predeterminded position.