Patent ID: 6389699
Filing Date: 2002-05-21
Classification: B26B,Y10S

Abstract:
In the method of forming a self-sharpening blade having in combinationa) 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, â€ƒthe 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.