Tapered plug cutter
AssigneeMibro Partners
InventorsKeith Louis Haughton, Glenn Wallace Haughton
Life of this patent
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Abstract
A plug cutter is for use in association with a drill, drill press and the like and is for producing a plug. The plug cutter includes a shank, a body portion, an outside cutter and an inside cutter. The shank has a longitudinal axis and is adapted to engage the drill. The body portion is integrally attached to the shank and extends downwardly therefrom. The outside cutter extends downwardly from the body portion and the inside cutter extends downwardly from the body portion and is spaced from the outside cutter. The outside cutter may have an outside cutting edge with a positive rake. The inside cutter may have an inside cutting edge with a positive rake.
Claims15
A plug cutter for use in association with a drill or a drill press for producing a plug comprising:
- a shank having a longitudinal axis adapted to engage the drill;
- a body portion integrally attached to the shank and extending downwardly therefrom;
- an outside cutter extending downwardly from the body portion and having an outside cutting edge with a positive rake;
- and
- a inside cutter extending downwardly from the body portion, being spaced from the outside cutter and having an inside cutting edge with a positive rake and an inward taper whereby the plug is a tapered plug.
Dependencies are inferred from the claim text.