Patent ID: 6945025
Filing Date: 2005-09-20
Classification: A01G,B02C

Abstract:
1. A shredder head for passing over a terrain to be treated and with vegetation to be cut and processed, the shredder head comprising: an elongated axle; a rotor mounted onto the axle, the rotor being rotable about the axle along a given direction of rotation; a plurality of shredding assemblies, each of the shredding assemblies being mounted to the rotor for rotating therewith along the given direction of rotation, and each of the shredding assemblies being positioned adjacent to one another and extending along a respective plane transversal to the axle, each of the shredding assemblies comprising: the improvement wherein each of the shredding assemblies further comprises: a protective element also operatively connected to the rotor for rotating therewith along the given direction of rotation, the protective element extending along the respective plane of its corresponding shredding assembly and defining a peripheral radius of action with respect to the axle when the rotor is rotated about the axle, the protective element being positioned upstream of and being aligned with the shredding knife during rotation of the rotor, and the peripheral radius of action of the protective element being substantially identical to the peripheral radius of action defined by the cutting edge of the shredding knife so that said shredding knife is protected by the passage of the protective element during operation of the shredding head, the protective element comprising a disk operatively mounted onto the rotor for rotating therewith along the given direction of rotation, the disk extending substantially along the respective plane of its corresponding shredding assembly, the disk comprising a peripheral edge having a segment defining a peripheral radius of action with respect to the axle when the rotor is rotated about the axle, the peripheral radius of action of the segment of the peripheral edge of the disk being substantially identical to the peripheral radius of action defined by the cutting edge of the shredding knife so that said shredding knife is protected by the passage of the disk during operation of the shredding head, the peripheral edge of the disk defining various different peripheral radiuses of action with respect to the axle, at different locations along the peripheral edge of the disk.