Patent ID: 8540035

Claim:
A tool for use in a well bore, comprising a first tubular body having a bore therethrough, an opening through a wall thereof, a connector at each longitudinal end thereof, and a first actuation profile formed in a surface thereof adjacent the opening; a first arm: pivotally connected to a first piston, and rotationally coupled to the first tubular body, disposed in the opening in a retracted position, movable to an extended position where an outer surface of the first arm extends outward past an outer surface of the first tubular body, and having a second actuation profile formed in an inner surface thereof and corresponding to the first actuation profile; the first piston: disposed in the body bore, having a bore therethrough, and operable to move the first arm from the retracted position to the extended position in response to fluid pressure in the piston bore exceeding fluid pressure in the opening; a lock operable to retain the first piston in the retracted position; and a second piston operably coupled to the lock, wherein: the first piston extends the first arm by moving longitudinally relative to the first tubular body, thereby moving the first arm along the first actuation profile, and the first arm rotates about the pivotal connection and relative to the first tubular body during extension from the retracted position to the extended position to accommodate movement of the first arm along the first actuation profile, and the actuation profiles are disengaged in the retracted position.