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US 6,105,261 AGranted
Self sharpening blades and method for making same
AssigneeGlobix Technologies, Inc.
InventorGunes M. Ecer
Life of this patent
Estimating the term…
Abstract
In a self-sharpening blade having a cutting edge, the combination comprising a layered structure, the structure including a relatively harder first layer with relatively higher wear resistance extending to the blade cutting edge, and the structure also including a second layer characterized by relatively lesser hardness and lesser wear resistance and located at one side of the first layer.
Claims22
In a self-sharpening blade having a cutting edge, the combination comprising
- a) a layered structure,
- b) said structure including a first layer extending to the blade cutting edge, and substantially defining said cutting edge,
- c) said structure also including a second layer located at one side of said first layer,
- d) wear resistance of said first layer being superior to wear resistance of said second layer,
- e) said first layer thickness being less than about 1.5 mm and substantially equal to or less than an ultimate tip diameter defined as the diameter of the very tip of the blade cutting edge;
- said tip having an exposed, outer convex surface, said tip diameter providing the best cutting action in the intended service of said self-sharpening blade,
- f) said first and second layers being reduced in thickness under pressure, and having compacted configurations, said first layer thickness being between about 3000 Angstroms and 1.5 mm, and
- g) said first layer having increased wear resistance formed by heat treating at elevated temperature.
5 more elements
In a self-sharpening blade having a cutting edge, the combination comprising
- a) a layered structure,
- b) said structure including a first layer extending to the blade cutting edge, and substantially defining said cutting edge,
- c) said structure also including second and third layers located at opposite sides of said first layer,
- d) wear resistance of said first layer being superior to wear resistance of said second and third layers,
- e) said first layer thickness being substantially equal to or less than an ultimate tip diameter defined as the diameter of the very tip of the blade cutting edge;
- said tip having an exposed, outer convex surface,
- f) said first, second and third layers being reduced in thickness under pressure, and having compacted configurations, said first layer thickness being between about 3000 Angstroms and 1.5 mm, and
- g) said first layer having increased wear resistance formed by heat treating at elevated temperature between metallic elements contained in said first layer and one or more of elements carbon, oxygen, nitrogen, and boron.
5 more elements
Dependencies are inferred from the claim text.