Portable drill bit sharpener
AssigneeWestern New England University
InventorsGlenn E. Vallee, James C. McKeon, Eric D. Perkins, Gregory J. O'Brien, Daniel James Goodwin, Nicholas W. Kantany
Life of this patent
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Abstract
A hand held, portable drill bit sharpener is provided which may be powered by a standard commercially available electrical power tool. The power tool may be used to actuate the drill bit sharpener by arranging the drive shaft of the sharpener into the power tool chuck. This drive shaft is connected through a gear set to a biased rotating sharpening stone which is pressed against a drill bit tip. The drill bit may be held in the sharpener using a standard keyless drill bit chuck.
Claims20
A sharpener comprising
- a case;
- a shaft extending from a first end of the case, the shaft having a first end sized to couple with an electrical power tool;
- a gear train coupled to the shaft;
- a grinding stone operably coupled to the gear train, the grinding stone having a conical recess on one side;
- and
- a drill chuck coupled to the case opposite the shaft, the drill chuck being substantially axially aligned with the conical recess.
A sharpener comprising:
- a case having a hollow interior area;
- a shaft extending from a first end of the case, the shaft having a first end sized to removably couple with an electrical power tool;
- a first gear train disposed within the hollow interior area and coupled to the shaft;
- a second gear train disposed within the hollow interior area and coupled to the first gear train;
- a grinding stone operably coupled to the second gear train, the grinding stone having a conical recess on a side opposite the second gear train;
- and
- a drill chuck coupled to the case opposite the shaft, the drill chuck being substantially axially aligned with the conical recess.
A sharpener comprising:
- a case having a hollow interior area;
- a shaft extending from a first end of the case, the shaft having a first end sized to removably couple with an electrical power tool;
- a first gear train disposed within the hollow interior area and coupled to the shaft;
- a second gear train disposed within the hollow interior area and coupled to the first gear train;
- a grinding stone operably coupled to the second gear train, the grinding stone having a conical recess on a side opposite the second gear train;
- a drill chuck coupled to the case opposite the shaft, the drill chuck being substantially axially aligned with the conical recess;
- a slip collar coupled for axial movement relative to the case, the slip collar being disposed between the grinding stone and the drill chuck;
- and
- a spring arranged within the hollow interior area to bias the grinding stone towards the slip collar.
Dependencies are inferred from the claim text.