Patent ID: 6171017
Filing Date: 2001-01-09
Classification: E01C

Abstract:
A roadway crack repair system comprising:(a) a steerable vehicle for navigating the roadway;(b) a platform assembly supported relative to the vehicle, at least a portion of the platform assembly being spaced directly above the roadway and being laterally movable relative to the vehicle;(c) a sensor unit mounted on the movable portion of the platform and directed to the roadway below the platform assembly for detecting local variations in a sensed parameter during movement of the vehicle, a sensed continuous local deviation of the parameter being indicative of a roadway crack;(d) a controller responsive to the sensor unit for generating an actuator drive signal, the drive signal reflecting a sensed lateral position of the crack relative to the sensor;(e) an actuator for laterally positioning the platform in response to the actuator drive signal;(f) an appliance supported by the movable portion of the platform for performing a maintenance operation on the crack as the appliance follows the crack.