Patent ID: 8490372

Claim:
A robotic tree trimmer comprising a hydraulic system adapted to be mounted to a tractor and comprising an extendible vertical mast; a first hydraulic motor attached to said vertical mast and adapted to linearly extend and rotate said vertical mast 180 degrees around a first vertical axis; an extendible horizontal boom attached to a distal top end of said vertical mast and having an extension member on an end opposite said distal top end of said vertical mast; a second hydraulic motor attached to said extension member and used to rotate a trimming apparatus 360 degrees around a second vertical axis variably spaced from said first vertical axis by said extendible horizontal boom; said trimming apparatus including a trimming member and a hydraulic piston that is attached between said trimming member and said extension member at a position that is spaced from the connection between said second hydraulic motor and said extension member to thereby provide the ability to pivot and adjust the angle of said trimming member with respect to said horizontal boom, such that said trimming member can be moved in a variety of positions, angles, heights in order to trim trees of varying positions and sizes in a variety of desired shapes.