Patent ID: 8540553

Claim:
A powered sharpening system for sharpening a rotary cutting blade for a hand held rotary cutter, comprising: a case having an upper cap portion and a lower body portion; an upper rotary column with a bottom face disposed in the upper cap portion of the case; a lower rotary column with an upper face disposed in the lower body portion of the case, the upper and lower columns disposed to come together along a common rotary axis with a rotary cutting blade disposed between the bottom face of the upper rotary column and the upper face of the lower rotary column when the case is in a closed position; an upper sharpening stone disposed in the upper cap portion of the case and positioned at an appropriate angle to contact an upper cutting edge of the rotary cutting blade disposed between the bottom face of the upper rotary column and the upper face of the lower rotary column when the case is in a closed position; a lower sharpening stone disposed in the lower body portion of the case and positioned at an appropriate angle to contact a lower cutting edge of the rotary cutting blade disposed between the bottom of the upper rotary column and the upper face of the lower rotary column when the case is in a closed position; and a motor for rotating the upper and lower rotary columns to sharpen the rotary cutting blade disposed between the bottom face of the upper rotary column and upper face of the lower rotary column when the case is in a closed position.