Shearing Cutter on a Degradation Drum
OwnerDavid R. Hall, Jeff Jepson +1inventors
InventorsDavid R. Hall, Jeff Jepson, Ronald B. Crockett
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Abstract
In one aspect of the present invention, a pick comprises a forward end and rearward end. The forward end comprises a shearing cutter and the rearward end comprises a shank. The shank and the shearing cutter are arranged co-axially about a central axis. The shearing cutter is supported by an enlarged section that narrows towards the shearing cutter and that has a greater cross section than the shank along a plane substantially perpendicular to the central axis. The shearing cutter comprises a flat surface that is substantially perpendicular to the central axis.
Claims20
A pick, comprising:
- a forward end and rearward end;
- the forward end comprising a shearing cutter and the rearward end comprising a shank;
- the shank and the shearing cutter are arranged co-axially about a central axis;
- the shearing cutter is supported by an enlarged section that narrows towards the shearing cutter and that has a greater cross section than the shank along a plane substantially perpendicular to the central axis;
- and
- the shearing cutter comprising a flat surface that is substantially perpendicular to the central axis.
A degradation drum, comprising:
- a pick secured to an outer surface of the drum through a block rigidly mounted to the outer surface;
- the block comprising a bore with an inner surface, the shank being secured within the bore;
- at least one pick comprising a shearing cutter comprising a shearing cutter comprising a flat surface;
- the shearing cutter and the shank are co-axially arranged about a central axis;
- and
- the flat surface of the shearing cutter is substantially perpendicular to the central axis.
Dependencies are inferred from the claim text.