Patent ID: 7867062

Claim:
A blade sharpener, comprising: a sharpening assembly comprising an abrasive stone unit and a guiding rod coupled to the abrasive stone unit; a controllably moveable bearing module adapted to pivotally support the sharpening assembly and provide a clearance fit to the guiding rod; a spring-loaded clamping mechanism adapted to receive, grip, and release a blade, said clamping mechanism: engageable using a screw drive which axis of rotation coincides with an axis of rotation of the clamping mechanism and is substantially coplanar with an axis of the guiding rod; rotateable at least 360 degrees about the axis of the screw drive independently from the sharpening assembly or the bearing module; and comprising at least one element defining pre-determined opposing angular positions of the clamping mechanism; and a monolithic base slidingly supporting the bearing module at a controlled distance from the axis of rotation of the clamping mechanism and having one or more indexers releaseably securing the clamping mechanism in the pre-determined opposing angular positions, the base having a sliding scale for defining said controlled distance.