GROOVED INCISOR SHREDDER CUTTING BLADE SET AND METHOD
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United States of America Patent
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app pub date -
Apr 14, 2015
filing date -
Oct 25, 2011
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Abstract
A grooved incisor blade set for paper shredders is disclosed. A blade includes a crown, a groove juxtaposed with the crown, and a center hole for a cutting arbor, where the crown and the groove define a relief channel. A stair-shaped, U-shaped or V-shaped blade assembly is described. In one embodiment, a notched grooved incisor blade having notches proximate to the central hole comes in contact with a mating grooved incisor blade also having a central hole. Force is applied to the mating blade to displace some of the body of the mating blade into the notches, affixing the blades together. A method for forming shredder cutting blades includes providing a strip of metal, forming a crown in the strip of metal, forming a relief groove juxtaposed to the crown in the strip of metal, thereby forming a relief channel, and trimming the grooved incisor blade of excess metal.
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