Abrading – Abrading process – Razor – knife – or scissors sharpening
Reexamination Certificate
2011-04-05
2011-04-05
Morgan, Eileen P. (Department: 3723)
Abrading
Abrading process
Razor, knife, or scissors sharpening
C451S224000, C451S234000, C451S361000, C451S371000, C076S082100, C269S059000
Reexamination Certificate
active
07918715
ABSTRACT:
A method and apparatus for sharpening clockwise rotating standard blades, counter-clockwise rotating standard blades and mulching style blades of either clockwise or counter-clockwise rotation is provided. The present invention comprises a base with a blade fixture which is reversible to accommodate both clockwise and counter-clockwise rotating blades. Uprights, a slide shaft, a slide bushing and a handle shaft connected to a disc grinder provide a means for setting a primary cutting angle for sharpening the primary cutting edges of a blade. An adjusting wheel rotatable attached to the handle shaft and pivotably coupled to the disc grinder provide a means for quickly and easily adjusting the cutting angle in order to accommodate sharpening the secondary cutting edges of a mulching style blade and returning the disc grinder back to its original cutting angle.
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Clark Randel R.
Steele Charles S.
Glacier Ridge Engineering, LLC
McCormick John K
Morgan Eileen P.
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