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US 4,904,280 AGranted
Conditioning block for sharpening stones
AssigneeNorton Company
InventorsStanley W. Cygan, Muni S. Ramakrishnan
Life of this patent
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Abstract
A product and process for reconditioning abrasive stones used to sharpen metal tools such as woodworking tools. The product is a slab made up of abrasive grain bond with an organic polymer.
Claims4
A porous slab for reconditioning cutting tool sharpening stones comprising abrasive grain and a foamed organic polymer bond therefor, said porous slab having an amount of porosity of from 40% to 80%, said abrasive grain having a grit size of from about 46 to about 220 based on U.S. Standard Sieve Series.
Dependencies are inferred from the claim text.