Patent ID: 6843535
Filing Date: 2005-01-18
Classification: E01C

Abstract:
1. A method of installing a series of depressions in a surface of a roadway, the method comprising the steps of; a) providing a rotary cutting tool capable of milling into the surface of the roadway; b) providing a camming surface moveable in an endless loop in response to movement relative to the surface of the roadway, the camming surface having a plurality of camming groups, each camming group having a surface elevational configuration and wherein the provided camming surface is positioned on a provided cam wheel and wherein the cam wheel rolls along the surface of the roadway during the moving of the rotary cutting tool along the surface of the roadway; c) providing a follower member to track the camming surface, the follower member having an elevational displacement corresponding to movement relative to the surface elevational configuration of at least select camming groups of the camming surface; d) providing linking means to provide for a transfer of the elevational displacement of the follower member to an elevational displacement of the rotary cutting tool; e) moving the rotary cutting tool along the surface of the roadway while the elevational displacement of the rotary cutting tool is repetitively performed wherein the rotary cutting tool is alternatingly displaced downward into contact with the surface of the roadway and displaced upward out of contact with the surface of the roadway to successively install the series of depressions in the surface of the roadway.