Patent ID: 7503241

Claim:
A device for sharpening a blade of a manual cutting tool, the device comprising; a support which is provided with a generally vertical cut-out, a pair of first sharpening elements pivotally mounted in spaced relationship about a first pivot point to the support on one side of the cut-out with each of the first sharpening elements being independently pivotal about the first pivot point, a second sharpening element being pivotally mounted at a second pivot point to the support on an opposite side of the cut-out, each of the first and second sharpening elements being formed as generally identical levers, each lever being angled and provided with a first cutting tool engaging sharpening arm that extends generally downwardly from one side of one of the respective first and second pivot points across the cut-out and which has an upper generally concavely curved surface portion and an end having a substantially rectilinear edge and a second arm that forms a counterweight for the lever and constitutes a means for returning the lever into an initial rest position by means of gravity, the second arm of each lever being angled outwardly relative to the first arm thereof on an opposite side of the respective first and second pivot points, the second sharpening element being mounted in an opposite orientation to the pair of first sharpening elements so that the first arm thereof is movable between the first arms of the first sharpening elements and each of the levers being pivotal about a geometric axis (D 10 ) which is generally perpendicular relative to a longitudinal vertical direction (A-A′) of the cut-out.