Manual sharpener
AssigneeEdgecraft Corporation
InventorsSamuel Weiner, Bela Elek, Daniel D. Friel, JR.
Life of this patent
Estimating the term…
Abstract
A manual sharpener includes at least one pre-sharpening stage having interdigitating comb-like abrasive sharpening structure. The sharpener also includes a finishing stage having a pair of abrasive surfaced truncated conical disks as its sharpening structure. The disks are mounted on a rotatable shaft with the small ends of the disks in contact with each other.
Claims6
In a non-electric manual knife sharpener having at least one pre-sharpening stage and a finishing stage, the improvement being in that the pre-sharpening stage has first abrasive sharpening structure, the finishing stage having second abrasive sharpening structure, the second abrasive sharpening structure being a pair of abrasive surfaced truncated conical disks having their small ends disposed toward each other, the disks being non-slidably mounted on a freely movable rotatable shaft, and the first abrasive sharpening structure differing from the second sharpening structure.
Dependencies are inferred from the claim text.