Abstract: A tree stump grinding wheel assembly includes a rotor having a plurality of holders distributed about its cutting periphery. Each holder has a neck in which resides a socket adapted to receive the shank of an indexable tooth. A head is attached to one end of the shank and screw threads are formed in its other end. The head has a plurality of flats configured to sequentially register with a forward shoulder on the neck. A hermetic spring is operatively disposed on the shank between a rearward face of the socket and a retention nut. The hermetic spring is made of elastomeric material and has a tapered nose that self-seats in a countersink at the rearward opening of the socket. The hermetic spring has an accordion-like bellows section. The bellows section can have a central annular bulge.

Abstract: A stump cutter bit for use with a stump cutting apparatus of the type utilizing a cutting wheel or drum rotated about a rotational axis wherein the cutting tool is attached to the cutting wheel or drum. The cutting tool supports the stump cutter bit. The cutting bit having a front face including a plurality of surfaces including an outer surface, an inner surface, and in intermediate surface located between the outer and inner surface.

Abstract: A cutting wheel for use with a stump cutting apparatus. A plurality of tool holders are secured to the cutting wheel, and there are a plurality of apertures in each tool holder. Each aperture has a cutting tool or tooth mounted therein so that each tool holder supports more than one cutting tool or tooth. In some embodiments, the cutting wheel includes first and second sections. The first and second sections including a support member, with a tool holder attached to the support member. Each of the first and second sections having a notch therein, the respective notches cooperating to form a joint between the first and second sections.

Abstract: A stump grinding wheel assembly having a disk-like wheel body. A plurality of bilateral mounting stations integral with the wheel body and arranged into spiral cluster groups. Each spiral cluster having an inner mounting station and at least one middle mounting station and an outer mounting station. The inner mounting stations are thicker than the middle mounting stations, which are thicker than the outer mounting stations. A pair of opposing side-cutters are disposed on each left and right side of the mounting stations. A separate plunge-cutter may be included with each spiral cluster. The bilateral mounting stations produce conically-helical cutting paths using identical side-cutters. The unequal width of the inner and middle and outer mounting stations enables better management of cutting forces in side cutting mode, which produces smoother operation.

Abstract: A cutting assembly for use with a stump cutting apparatus. Cutting assembly including a plurality of tool holders and cutting tools supported in said tool holders. The tool holders placed in a side-by-side relationship on at least one side of the cutting wheel. Further, in an alternative example a single tool holder supports multiple cutting tools.

Abstract: A cutting wheel for use with a stump cutting apparatus. A plurality of tool holders are secured to the cutting wheel, and there are a plurality of apertures in each tool holder. Each aperture has a cutting tool or tooth mounted therein so that each tool holder supports more than one cutting tool or tooth. In some embodiments, the cutting wheel includes first and second sections. The first and second sections including a support member, with a tool holder attached to the support member. Each of the first and second sections having a notch therein, the respective notches cooperating to form a joint between the first and second sections.

Abstract: A stump grinding wheel assembly having a disk-like wheel body. A plurality of bilateral mounting stations integral with the wheel body and arranged into spiral cluster groups. Each spiral cluster having an inner mounting station and at least one middle mounting station and an outer mounting station. The inner mounting stations are thicker than the middle mounting stations, which are thicker than the outer mounting stations. A pair of opposing side-cutters are disposed on each left and right side of the mounting stations. A separate plunge-cutter may be included with each spiral cluster. The bilateral mounting stations produce conically-helical cutting paths using identical side-cutters. The unequal width of the inner and middle and outer mounting stations enables better management of cutting forces in side cutting mode, which produces smoother operation.

Abstract: A stump cutting apparatus including a cutting wheel with a plurality of tool holders secured to the cutting wheel. A plurality of apertures located in each of the tool holders. Each of said apertures having a cutting tool or tooth mounted therein whereby each tool holder supports more than one cutting tool or tooth.

Abstract: A stump cutter bit for use with a stump cutting apparatus of the type utilizing a cutting wheel or drum rotated about a rotational axis wherein the cutting tool is attached to the cutting wheel or drum. The cutting tool supports the stump cutter bit. The cutting bit having a front face including a plurality of surfaces including an outer surface, an inner surface, and in intermediate surface located between the outer and inner surface.

Abstract: A cutting assembly for use with a stump cutting apparatus. Cutting assembly including a plurality of tool holders and cutting tools supported in said tool holders. The tool holders placed in a side-by-side relationship on at least one side of the cutting wheel. Further, in an alternative example a single tool holder supports multiple cutting tools.

Abstract: A stump cutting apparatus including a cutting wheel with a plurality of tool holders secured to the cutting wheel. A plurality of apertures located in each of the tool holders. Each of said apertures having a cutting tool or tooth mounted therein whereby each tool holder supports more than one cutting tool or tooth.

Abstract: A stump cutting apparatus including a cutting wheel with a plurality of tool holders secured to the cutting wheel. A plurality of apertures located in each of the tool holders. Each of said apertures having a cutting tool or tooth mounted therein whereby each tool holder supports more than one cutting tool or tooth.