Abstract: A hydraulic drive system has a variable displacement hydraulic pump; a prime mover driving the hydraulic pump; a variable displacement hydraulic motor fed hydraulic fluid by the hydraulic pump, the hydraulic motor having internal torque control and speed modulation via the variable displacement; and a shaft driven by the hydraulic motor. The prime mover is either an electric motor or an internal combustion engine, advantageously a diesel engine. The system is either an open loop hydraulic system or a closed loop hydraulic system. With the system, relatively low output prime movers are used without reduction in the systems maximum torque output.

Abstract: A primary reduction apparatus having a frame structure and at least one shaft mounted on the frame. The shaft is reversibly rotatable around an axis of rotation in a first direction of rotation or a second direction of rotation. A drive supplies rotation force to rotate the shaft. Protruding cutters are arranged on the shaft, each cutter having a stem portion which edges define shear edges, a first protruding wedge-shaped tooth arranged on the stem portion and facing the first direction of rotation and a second protruding wedge-shaped tooth facing the second direction of rotation. Cross members connect sides of the frame with cracker jaw plates removably attached to each cross member. The cracker jaw plates have a working surface with multiple pierce points forming a serrated edge to cooperate with the cutters. The cracker jaw plates have a relief on a surface of the cracker jaw plates facing the cutter and are removably attached to the cross members.

Abstract: A primary reduction apparatus having a frame structure and at least one shaft mounted on the frame. The shaft is reversibly rotatable around an axis of rotation in a first direction of rotation or a second direction of rotation. A drive supplies rotation force to rotate the shaft. Protruding cutters are arranged on the shaft, each cutter having a stem portion which edges define shear edges, a first protruding wedge-shaped tooth arranged on the stem portion and facing the first direction of rotation and a second protruding wedge-shaped tooth facing the second direction of rotation. Cross members connect sides of the frame with cracker jaw plates removably attached to each cross member. The cracker jaw plates have a working surface with multiple pierce points forming a serrated edge to cooperate with the cutters. The cracker jaw plates have a relief on a surface of the cracker jaw plates facing the cutter and are removably attached to the cross members.

Abstract: A hydraulic drive system has a variable displacement hydraulic pump; a prime mover driving the hydraulic pump; a variable displacement hydraulic motor fed hydraulic fluid by the hydraulic pump, the hydraulic motor having internal torque control and speed modulation via the variable displacement; and a shaft driven by the hydraulic motor. The prime mover is either an electric motor or an internal combustion engine, advantageously a diesel engine. The system is either an open loop hydraulic system or a closed loop hydraulic system. With the system, relatively low output prime movers are used without reduction in the systems maximum torque output.

Abstract: A shredding apparatus comprises a plurality of rotatable rolls, each one of the rolls being rotatable around an axis of rotation in a first direction of rotation or a second direction of rotation. Each roll further has a plurality of angled replaceable teeth, which are arranged in at least one first set of teeth arranged in a first helical line across an outer surface of each roll, circumferentially spaced apart a first angle and facing the first direction of rotation. Further, at least one second set of teeth is arranged in a second helical line across the outer face of each roll, circumferentially spaced apart the first angle and facing the second direction of rotation. The first helical line and the second helical line of teeth are arranged to axially (in the longitudinal direction of the rolls) move material to be shredded when the rolls are rotated.

Abstract: An interlocking interchangeable interface element and rotor assembly comprising at least two rotor bodies, a plurality of interface element mounting cut-outs arranged substantially radially in the rotor bodies, a plurality of interface elements arranged to be mountable in the cut-outs and a plurality of peripheral mounting holes arranged to receive rotor body bundling means to hold the rotor bodies fixedly against each-other and to prevent the hammers to exit the interface element mounting cut-outs. Each of the interface elements has a substantially oblong and planar shape; a bottom end shaped to interlock with the cut-outs; a leading edge facing the direction of rotation of the rotors; a trailing edge facing the side opposite to the direction of rotation; and interface element tip mounting means, arranged in an upper mounting portion of each interface element.