Patent ID: 8721248

Claim:
A rotator for a jib-carried tool including tree working units, wherein the rotator ( 10 ) is hydraulically driven and includes a stator ( 20 ) and a rotor ( 30 ) and a source of hydraulic fluid applied to the rotor, and wherein said rotator ( 10 ) is connected to a tip ( 2 ) of the jib or arm ( 3 ) via a link arrangement and to said tool ( 1 ), characterized in that the rotator ( 10 ) or its surroundings includes a computer in communication with the rotor for determining the relative position of rotation between the rotor ( 30 ) and the stator ( 20 ) and for communicating with the source of hydraulic fluid applied to the rotor for limiting the extent of rotation of the rotor relative to the stator based upon said determined relative position for limiting twisting of attached hoses and/or cables and to enhance automation.