Blade sharpening system for multiple blade shapes
OwnerMichael G. Borschinventor
Life of this patent
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Abstract
A blade sharpening system using the interior surface of a grinding wheel against which a blade is drawn along its entire length for sharpening. The sharpening system includes a blade holding configuration having multiple hinged arms. A cam operating between two of the hinged arms serves to alter the angle of incidence between the blade and the grinding wheel as the blade is drawn across the grinding wheel. The result is that a wide variety of different blade configurations can be easily accommodated by the sharpening system.
Claims20
A blade sharpening system comprising:
- a) a hollow grinding wheel having an interior circumference configured to provide an abrasive sharpening surface, and an external circumference;
- b) a blade holding arrangement configured to place a blade at said interior surface of said grinding wheel;
- and,
- c) an interface on said exterior circumference to transfer drive power to said hollow grinding wheel.
A blade sharpening system including a grinding device, and a blade holding system, said blade holding system comprising:
- a) three multiple hinged arms configured to draw an external blade across an interior surface of said grinding device by folding and unfolding by pivoting around at least one common vertical axis;
- b) a cam vertically arranged between at least two of said hinged arms, one said at least one common vertical axis, wherein said cam causes a change in angle of attack between said external blade and said grinding device;
- and,
- c) a support system for said hinged arms and said grinding device.
Dependencies are inferred from the claim text.