Patent ID: 8146475

Claim:
A method of cutting grooves having a trapezoidal profile into an airport runway at a predetermined depth, wherein each of said grooves has a base of a first width, an open top of a wider second width and sloped side walls that extend from said open top to said base, said method comprising the steps of: providing a saw blade having circular blank with a plurality of cutting teeth mounted thereon, each of said cutting teeth having a body with a face surface at one end of said body, a bottom surface that runs along said body furthest from said circular blank, a wide section disposed behind said face surface and above said bottom surface and side surfaces that extend from said face surface to said wide section, wherein said wide section has a width equal to said second width and both said face surface and said bottom surface have a width equal to said first width; and cutting a plurality of grooves in a surface of an airport runway utilizing said saw blade.