Patent ID: 7857681

Claim:
An automatic rotation knife sharpener comprising: (a) a frame assembly and a protective angular shaped cover raised above said frame assembly wherein said protective cover is in an angular shape having a front section, a right rear lobe and a left rear lobe, with a protective cover top surface and side surfaces; (b) two or more sharpening rods and two or more storage troughs on said protective cover top surface to hold said sharpening rods when the device is stored; (c) a circular flexible retainer covering a portion of the troughs for securing said sharpening rods to hold them in place during storage; (d) an elongated orifice at the rear providing a means for the sharpening rods to translate back and forth through the protective cover during the sharpening operation, and a clearance slot at the back of said elongated orifice which allows for clearance at the rear when a knife blade is drawn through the device; and (e) right and left pivot arms moveably affixed to said frame having a compression spring disposed there between, a cogwheel rotatably attached to each of said right and left pivot arms, having a plurality of cog position notches, a spring steel actuator having proximal and distal ends affixed to said frame at said proximal end, having distal ends engaged with said cog positions of said cogwheel; whereby when a knife blade is drawn downwardly through the two sharpening rods, the right and left pivot arms are drawn inwardly and the distal ends of the spring steel actuator engage the cogwheels and rotate them into a new position, and when the left and right pivot arms are forced back to their static position by the compression spring the distal ends of the spring steel actuator will re-engage in the next cog position notches on said cogwheel, thereby this action produces the automatic rotation of each sharpening rod.