Shear knife
AssigneeAndritz Asko Inc.
InventorsJoel D. Kneisley, Menno Johan van der Woude, Albert R. Zelt, III
Life of this patent
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Abstract
A metal shearing tool demonstrating improved fatigue life having a body; an edge of the body having a first surface and a second surface; a cutting surface disposed between the first surface and the second surface. The edge has a substantial absence of finish marks substantially parallel with the cutting surface on all surfaces of the edge, and at least one of a curved profile surface and a radiused cutting surface.
Claims6
A metal shearing tool comprising:
- a body;
- an edge of the body having a first surface and a second surface;
- a cutting surface disposed between the first surface and the second surface;
- wherein the edge has a convex curved profile, and wherein the edge further has a substantial absence of finish marks substantially parallel with the cutting surface.
The metal shearing tool according to any one of the preceding claims, wherein the metal shearing tool demonstrates improved fatigue life.
A metal shearing tool comprising:
- a body;
- an edge of the body having a first surface and a second surface;
- a cutting surface disposed between the first surface and the second surface;
- wherein the edge has at least one of a convex curved profile and a radius, and wherein the edge further has a substantial absence of finish marks substantially parallel with the cutting surface;
- wherein the metal shearing tool demonstrates improved fatigue life of at least 130% compared to the same metal shearing tool not having at least one of a convex curved profile, and a radius, and wherein the edge further has a substantial absence of finish marks substantially parallel with the cutting surface.
Dependencies are inferred from the claim text.