Patent ID: 8033025

Claim:
A tool comprising: an outer body with a proximal end and a distal end, said outer body defining an internal chamber; a piston located in said chamber and moving between a retracted position and a forward position; a sleeve attached to said proximal end of said outer body; a rod fixed to said piston, said sleeve having an inner sleeve surface and a sleeve end portion, said inner sleeve surface and said sleeve end portion defining a recess, at least a portion of said rod being arranged in said recess, wherein said rod is movable in said sleeve such that said rod moves with said piston, said sleeve having an outer sleeve surface, said outer sleeve surface defining a plurality of grooves; and a powered shearing means driven by said piston and moving between an idle position and an active position in response to the movements of the piston between said retracted and forward positions, wherein the proximal end of said outer body is associated with sensing elements to detect at least the forward position of the piston in said internal chamber and in the same way at least the active position of said shearing means to signal the completion of an action of said shearing means, each of said sensing elements being arranged in one of said grooves, wherein each of said sensing elements is movable within said one of said grooves.