Patent ID: 7832321

Claim:
A cutting blade for cutting a groove into pavement, wherein said groove has a depth between a bottom and a top and wherein said top of said groove is wider than said bottom of said groove, said cutting blade comprising; a circular metal blank having an arbor mounting hole disposed therein, said circular metal blank having an outer rim; a plurality of cutting tooth elements symmetrically affixed to said outer rim, each of said cutting tooth elements having a body defined between a forward surface, a rearward surface and a peripheral edge surface that extends between said forward surface and said rearward surface; wherein said body varies in width between said forward surface and said rearward surface and has a maximum width in a thickened area between said forward surface and said rearward surface that is equal in width to said top of said groove; and wherein said peripheral edge surface is farthest from said outer rim and has a constant width equal to said bottom of said groove; and wherein said forward surface has a uniform width that is equal to that of said peripheral edge surface.