Patent ID: 8528953

Claim:
A device for operating gripping or movement tools, the device comprising: a body; at least a movable member associated with said body and movable reciprocating between a first and a second spaced positions; a cursor capable of reciprocating linear movements in said body and connected to at least said movable member for the movements of said at least said movable member from one of said first and second spaced positions to another of said first and second spaced positions; an electric actuator designed to control the reciprocating movements of said cursor and said at least said movable member; a means for transmission of the movement driven by the actuator; a towing slide associated with said cursor and capable of reciprocating movements in said body caused by the actuator through the transmission means; and at least an elastic member positioned and preloaded between said towing slide and said cursor, said at least said elastic member being parallel to a movement direction of said towing slide and said cursor and parallel to a movement direction of at least said movable member such that the cursor and towing slide can move together as one as long as the preload of the elastic member remains unchanged and such that said cursor and towing slide are independent from one another other in response to a variation of a preload of said at least elastic member deriving from a resistance against the movement of said at least movable member.