Patent ID: 6805516
Filing Date: 2004-10-19
Classification: E01C

Abstract:
A roadway paving apparatus for applying asphalt binder material and aggregate material to a ground surface, comprising:a vehicle having an engine and wheels, the vehicle having opposed front and rear ends; an aggregate material dispensing system carried by the vehicle, comprising: (a) an input hopper disposed proximate the front end of the vehicle adapted to receive aggregate material; (b) an output hopper disposed proximate the rear end of the vehicle, the output hopper converging toward a discharge port adapted to discharge aggregate material over the ground surface; (c) a conveyor mechanism extending between the input hopper and the output hopper, the conveyor mechanism adapted to transport aggregate material from the input hopper to the output hopper; an asphalt binder material dispensing system carried by the vehicle separate from the aggregate material system such that asphalt binder material and aggregate material are not mixed prior to aggregate material being dispensed through the discharge port, the asphalt binder material dispensing system comprising: (a) a tank for holding asphalt binder material; (b) a spray bar between the discharge port and the front end, the spray bar having a plurality of nozzles adapted to spray asphalt binder material; and (c) a pump mechanism adapted to pump asphalt binder material from the tank to the spray bar; wherein all of the wheels roll on the ground surface between the spray bar and the front end such that no wheels roll over asphalt binder material and aggregate material that are discharged by the spray bar and through the output hopper; and wherein the nozzles and the discharge port are arranged with substantially non-intersecting trajectories such that asphalt binder material and aggregate material ate substantially prevented from being mixed prior to contact with the ground surface during operation.