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US 8,567,872 B2Granted
Grinder bit
AssigneeRaytheon Company
InventorJonathan J. Carr
Life of this patent
Estimating the term…
Abstract
An apparatus for grinding material includes a grinder bit including a drum and a plurality of grinders, at least a portion of the grinders disposed longitudinally in a first helical pattern along the outer surface of the drum. The apparatus further includes a plurality of cleats, at least a portion of the cleats disposed longitudinally in a second helical pattern along the outer surface of the drum. The second helical pattern is offset from the first helical pattern.
Claims16
An apparatus for grinding material, comprising:
- a grinder bit suitable for a power hand tool comprising:
- a drum;
- a plurality of grinders for grinding material, at least a portion of the grinders affixed longitudinally in a first helical pattern along the outer surface of the drum;
- and
- a plurality of cleats for removing the material ground by the grinders, at least a portion of the cleats at least partially box shaped and affixed longitudinally in a second helical pattern along the outer surface of the drum, at least a portion of the grinders along the first helical pattern is interdisposed with at least a portion of the cleats along the second helical pattern,
- wherein at least one cleat has a first surface and a second surface non-continuous from the first surface, at least a portion of the second surface substantially parallel to the first surface and opposed to the first surface, wherein the first surface and the second surface are interchangeable such that in a first state the first surface forms a leading portion of the at least one cleat and in a second state the second surface forms a leading portion of the at least one cleat.
3 more elements
Dependencies are inferred from the claim text.