Self sharpening blades and method for making same
AssigneeGlobix Technologies, Inc.
InventorGunes M. Ecer
Life of this patent
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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.
Claims34
In the method of forming a self-sharpening blade having in combination
- a) a layered structure,
- b) said structure including a first layer extending to a blade cutting edge,
- c) said structure also including a second layer located at one side of said first layer,
- d) said first layer being exposed at said cutting edge, and substantially defining said cutting edge,
- e) said first layer having wear resistance superior to wear resistance of said second layer,
- f) said first layer thickness being less than about 1.5 mm and substantially equal to or less than an ultimate tip diameter defined as a blade cutting edge tip diameter providing a desirable cutting action in the intended service of said self-sharpening blade,
- the steps that include:
- i) connecting said first and second layers, in side-by-side relation, and
- ii) exposing an edge of said first layer to define said cutting edge.
In the method of forming a self-sharpening blade having in combination
- a) a layered structure,
- b) said structure including a first layer extending to a blade cutting edge,
- c) said structure also including second and third layers located at opposite sides of said first layer,
- d) said first layer having wear resistance superior to wear resistance of said second and third layers,
- e) said first layer being exposed at said cutting edge, and substantially defining said cutting edge,
- f) said first layer thickness being less-than about 1.5 mm and substantially equal to or less than an ultimate tip diameter defined as a blade cutting edge tip diameter providing a desirable cutting action in the intended service of said self-sharpening blade,
- the steps that include:
- i) connecting said first, second and third layers, in side-by-side relation,
- ii) exposing an edge of said first layer to define a cutting edge, and
- iii) providing chamfers toward both side regions of the-first layer proximate said cutting edge.
In the method of forming a self-sharpening blade having in combination
- a) a layered structure,
- b) said structure including a relatively harder first layer with relatively higher wear resistance extending to the blade cutting edge,
- c) said structure also including a second layer characterized by relatively lesser hardness and lesser wear resistance and located at one side of said first layer,
- the steps that include:
- i) connecting said first and second layers, in side-by-side relation, and
- ii) exposing an edge of said first layer to define a cutting edge.
In the method of forming a self-sharpening blade having in combination
- a) a layered structure,
- b) said structure including a first layer with relatively higher wear resistance extending to the blade cutting edge,
- c) said structure also including two or more additional layers located at opposite sides of said first layer, and each characterized by wear resistance less than the wear resistance of said first layer,
- the steps that include:
- i) connecting said layers in side-by-side relation, with said first layer sandwiched between two of said additional layers, and
- ii) exposing an edge of said first layer to define a cutting edge that protrudes relative to said two additional layers.
Dependencies are inferred from the claim text.