Patent ID: 7900536
Filing Date: 2011-03-08
Classification: B23D,B24B

Abstract:
1. A wiskar for sharpening cutting teeth of a chain provided on a chain bar of a chain saw, a housing that is removably attached to the chain bar and includes a recess to receive the wiskar, the wiskar comprising: a first member configured to be operationally engaged by the recess of the housing; a second member configured to frictionally engage a bottom surface of the cutting teeth; and abrasives uniformly impregnated throughout the first and second member, wherein the abrasives sharpen the bottom surface of the cutting teeth, wherein the first member engages the second member at a location intermediate opposing ends of the second member, and wherein the second member includes a body portion intermediate the opposing ends, the opposing ends of the second member each having at least one lobe defined therein, a thickness of each lobe being greater than a thickness of the body portion.