Abstract: A shredder head for passing over a terrain containing vegetation and rocks so as to silviculturally process said terrain. The shredder head includes an elongated support shaft, a rotor, and a plurality of first and second sections provided longitudinally along a peripheral support surface area of the rotor. The second sections are each disposed between pairs of first sections so as to have an alternation of first and second sections longitudinally along the rotor. Each section includes at least one supporting element for supporting at least one processing tool configured for cooperating with the terrain via a rotation of the rotor for processing the terrain and corresponding vegetation and rocks present therein.

Abstract: A tandem wheel assembly including a support frame; a pair of wheels; a motor mounted onto the support frame for providing power to the wheels so as to impart a rotation of the wheels; and a power transmission system operatively connected between the motor and the wheels for transmitting power from the motor to the wheels. The power transmission system has a rotatable power transmission shaft including first and second components each having a longitudinal axis, the first and second components being connected to each other via coupling means for enabling the first and second components to rotate together as part of the rotatable power transmission shaft, while allowing the longitudinal axis of the second component to be displaced at an angle ? with respect to the longitudinal axis of the first component, so as to sustain a transversal load component subjected to the rotatable power transmission shaft.

Abstract: The method and apparatus are for controlling a longitudinal shifting of an elongated piece along a predetermined length SL as said piece moves transversely within a plane at a given speed PS. The apparatus comprises a longitudinal arm having a given length PL pivotable within the plane to shift the piece; a flexible link operatively mounted around the arm to contact the piece as the arm is pivoted to shift the piece; a controllable pivoting means for pivoting the arm according to an angle &thgr; determined in relation to the predetermined length SL and the given length PL; and a controllable driving means for driving the flexible link around the arm according to a speed SS determined in relation to the speed PS of the piece and the angle &thgr; so that the longitudinal shifting is controlled.

Abstract: The method and apparatus are for controlling a longitudinal shifting of an elongated piece along a predetermined length SL as said piece moves transversely within a plane at a given speed PS. The apparatus comprises a longitudinal arm having a given length PL pivotable within the plane to shift the piece; a flexible link operatively mounted around the arm to contact the piece as the arm is pivoted to shift the piece; a controllable pivoting means for pivoting the arm according to an angle &thgr; determined in relation to the predetermined length SL and the given length PL; and a controllable driving means for driving the flexible link around the arm according to a speed SS determined in relation to the speed PS of the piece and the angle &thgr; so that the longitudinal shifting is controlled.