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US 11,711,991 B2Granted
Cylindrical device with knives connected thereto
OwnerMark G. Bowlinginventor
Life of this patent
Estimating the term…
Abstract
A cylindrical device includes semi-helically oriented teeth, knives, or blades radially outward from an outer surface of the cylindrical device or rotor. Each tooth, knife, or blade is part of a row of teeth, knives, or blades. Each row is oriented with an offset angle such that the spirally orientation completes angular offset of about 90° or less. The knives may have sharpened edges that are oriented to cut on different planes as the cylindrical device rotates. The knives may be held in place by holders that have configurations to oriented the knives at certain angles.
Claims19
A device comprising:
- a rotor having a first end opposite a second end and a sidewall extending from the first end to the second end defining an outer surface, and the rotor adapted to rotate about an axis;
- a first row of knives coupled to the sidewall and positioned radially outward from the outer surface relative to the axis;
- a first knife in the first row of knives, the first knife including a first sharpened edge;
- and
- a second knife in the first row of knives, the second knife including a second sharpened edge;
- wherein the first sharpened edge and the second sharpened edge are oriented to cut on different planes as the rotor rotates about the axis;
- wherein the first knife includes:
- at least two sharpened edges adapted to cut materials during land clearing or mulching;
- a top surface spaced from a bottom surface, wherein the at least one knife is shaped as a generally inverted frusto-square pyramid;
- a tapered sidewall defining one sharpened edge extending between the top surface and the bottom surface at angle in a range from about 30° to about 60°;
- an aperture defined from the top surface to the bottom surface configured to align with a hole formed in the rotor;
- and
- wherein the at least one knife is adapted to be moved to change a leading cutting edge of the knife when the one sharpened edge becomes dull.
10 more elements
A device comprising:
- a rotor having a first end opposite a second end and a sidewall extending from the first end to the second end defining an outer surface, and the rotor adapted to rotate about an axis;
- a first row of knives coupled to the sidewall and positioned radially outward from the outer surface relative to the axis;
- a first knife in the first row of knives, the first knife including a first sharpened edge;
- and
- a second knife in the first row of knives, the second knife including a second sharpened edge;
- wherein the first sharpened edge and the second sharpened edge are oriented to cut on different planes as the rotor rotates about the axis;
- a first holder that couples the first knife to the rotor, wherein the holder includes a bottom surface and an aperture formed in the holder through the bottom surface, wherein the aperture is non-orthogonal to the bottom surface and adapted to orient the holder and first knife coupled thereto non-orthogonally relative to the outer surface of the rotor.
4 more elements
A device comprising:
- a rotor having a first end opposite a second end and a sidewall extending from the first end to the second end defining an outer surface, and the rotor adapted to rotate about an axis;
- a first row of knives coupled to the sidewall and positioned radially outward from the outer surface relative to the axis;
- a first knife in the first row of knives, the first knife including a first sharpened edge;
- a holder that couples the first knife to the rotor to offset the first sharpened edge from the outer surface of the rotor;
- wherein the holder further includes:
- a planar portion that defines an aperture that aligns with a hole formed in the outer surface of the rotor adapted to receive at least one screw therethrough.
3 more elements
A device comprising:
- a rotor having a first end opposite a second end and a sidewall extending from the first end to the second end defining an outer surface, and the rotor adapted to rotate about an axis;
- a first row of knives coupled to the sidewall and positioned radially outward from the outer surface relative to the axis;
- a first knife in the first row of knives, the first knife including a first sharpened edge;
- a holder that couples the first knife to the rotor to offset the first sharpened edge from the outer surface of the rotor;
- wherein the holder further includes:
- an extension that protrudes radially outward from a planar portion of the holder, and wherein the extension includes a first angled face that connects with an upper portion that is offset from the planar portion such that the upper portion is positioned radially outward from the planar portion relative to the axis about which the rotor is configured to rotate;
- and
- wherein the first knife contacts the planar portion.
5 more elements
A device comprising:
- a rotor having a first end opposite a second end and a sidewall extending from the first end to the second end defining an outer surface, and the rotor adapted to rotate about an axis;
- a first row of knives coupled to the sidewall and positioned radially outward from the outer surface relative to the axis;
- a first knife in the first row of knives, the first knife including a first sharpened edge;
- a holder that couples the first knife to the rotor to offset the first sharpened edge from the outer surface of the rotor;
- wherein the holder further includes an extension that protrudes radially outward from a portion of the holder, and wherein the extension includes an upper portion and there is a wearable material at the upper portion that is adapted to protect the first knife as the rotor rotates about the axis.
2 more elements
Dependencies are inferred from the claim text.