Patent ID: 6210071
Filing Date: 2001-04-03
Classification: E01C

Abstract:
A self-propelled machine for cutting rumble strips in the surface of a roadway, which machine comprises:(a) a frame;(b) drive means mounted to the frame and adapted for advancing the machine across the surface of the roadway;(c) a generally cylindrical cutting drum mounted on the frame for rotation about an axis that is disposed generally parallel to the surface of the roadway;(d) a plurality of cutting teeth mounted on the outer surface of the drum;(e) means for rotating the cutting drum about its axis;(f) means for maintaining the drum at a predetermined position with respect to the surface of the roadway so that the cutting teeth will cut into said surface a relatively constant, predetermined depth as the drum is rotated about its axis while the machine is advanced along the surface of the roadway;wherein the cutting teeth are arranged in a predetermined pattern around the drum so that when the drum is rotated about its axis while being maintained at said predetermined position with respect to the surface of the roadway as the machine is advanced therealong, the cutting teeth will cut a series of spaced parallel rumble strips into the surface of the roadway.