Roadway paving supply truck

• US 6,776,557 B2
• Filed: 09/04/2002
• Issued: 08/17/2004
• Est. Priority Date: 06/04/2001
• Status: Expired due to Fees

• Current Assignee: ED Etnyre & Company
• Original Assignee: ED Etnyre & Company
• Inventors: Barnat, James J., Brown, Thomas R., OʼBrien, Patrick, Dabbs, Harold, Hannebaum, Tyrone, Heller, Jeremy
• Primary Examiner(s): Will, Thomas B.
• Assistant Examiner(s): Addie, Raymond W.
• Application Number:
  US10/235,871
• Publication Number:
  US 20030012601A1
• Time in Patent Office: 713 Days
• Field of Search: 404/101, 404/111, 404/90, 404/91, 404/108, 299/39, 222/74, 222/617, 222/622, 414/527, 414/528, 414/657, 414/662, 414/674, 298/23
• US Class Current: 404/101
• CPC Class Codes: E01C 19/21 for simultaneously but separately applying liquid material and granular or pulverulent material, e.g. bitumen and grit, with or without spreading with rolling E01C19/4813; for filling grooves and gritting the filling
• CPC Class Codes: E01C 19/48 for laying-down the materials and consolidating them, or finishing the surface , e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ E01C19/002, E01C23/065 take precedence; devices for guiding or controlling the machines along a predetermined path E01C19/004
• CPC Class Codes: E01C 2019/2075 with longitudinal conveyor belt

Abstract

A roadway paving system for chipsealing a roadway surface comprising a novel roadway paving vehicle and a novel supply truck is provided. The roadway paving vehicle comprises an asphalt binder material dispensing system and an aggregate material dispensing system. The asphalt binder material dispensing system includes an asphalt tank and a sprayer that sprays a first layer of the asphalt binder material over the roadway surface. The aggregate material dispensing system comprises an aggregate hopper and conveyor mechanism that discharges a second layer of aggregate material over the roadway surface. No wheels run over a freshly laid surface. Supply trucks are linked to the roadway paving vehicle to refill the roadway paving vehicle on a continuous basis without the need of stopping the vehicle.

Claims

1. A supply truck, comprising:

a chassis supported on wheels extending between front and rear ends;

a supply hopper supported by the chassis having a discharge region at the rear end;

a conveyor mechanism in the supply hopper adapted to convey aggregate material towards the discharge region;

a tailgate closing the discharge region of the supply hopper, the tailgate moving rearwardly relative to the chassis to open the discharge region to allow discharge of aggregate material from the rear end of the supply truck;

a supply tank supported by the chassis carrying liquid material;

a transfer conduit carried by the tailgate and connected to the supply tank, the transfer conduit including a hydraulic coupling, the transfer conduit and hydraulic coupling extending rearwardly when the tailgate moves rearwardly; and

a support ann mounted to the tailgate, the support arm supporting the transfer conduit and guiding rearward extension of the transfer conduit and hydraulic coupling.

2. The supply truck of claim 1 further comprising:

a control module supported by the support arm and electronically connected to the conveyor mechanism, the control module controlling operation of the conveyor mechanism to control discharge of material from the hopper.

3. The supply truck of claim 2 wherein the tailgate comprises a pair of doors, the doors being pivotably mounted to the hopper such that the doors pivot horizontally outwardly away from each other to open the discharge region and inwardly toward each other to close the discharge region, the support arm being mounted to one of the doors.

4. The supply truck of claim 3 wherein the support arm extends diagonally between vertical and horizontal axes and extends vertically above a vertical top edge of the doors, the control module and hydraulic coupling arranged on the support arm such that the control module and hydraulic coupling extend horizontally rearwardly substantially beyond the doors when the doors are open sufficient to avoid interference with material discharged through the discharge region when the conveyor mechanism is operating.

5. The supply truck of claim 4 further comprising:

means for securing the transfer conduit to the support arm.

6. The supply truck of claim 3 further comprising:

fluid powered cylinders mounted to the hopper controlling the opening and closing of the doors.

7. The supply truck of claim 1 wherein the supply truck is linked to a roadway paving vehicle, the roadway paving vehicle including an operator station, an asphalt binder material dispensing system and an aggregate material dispensing system, the asphalt binder material dispensing system including an asphalt tank and an input conduit connected to the asphalt tank, the input conduit having a hydraulic coupling at the operator station, the hydraulic coupling of the input conduit connecting to the hydraulic coupling of the transfer conduit.

8. A supply truck, comprising:

a chassis supported on wheels extending between front and rear ends;

a supply hopper supported by the chassis having a discharge region at the rear end;

a conveyor mechanism in the supply hopper adapted to convey aggregate material towards the discharge region;

a tailgate closing the discharge region of the supply hopper, the tailgate moving rearwardly relative to the chassis to open the discharge region to allow discharge of aggregate material from the rear end of the supply truck;

a supply tank supported by the chassis carrying liquid material;

a transfer conduit carried by the tailgate and connected to the supply tank, the transfer conduit including a hydraulic coupling, the transfer conduit and hydraulic coupling extending rearwardly when the tailgate moves rearwardly; and

wherein the supply truck includes front wheels and rear wheel sets, the supply tank being mounted beneath the conveyor mechanism and the hopper and between the front wheel set and the rear wheel set, whereby a low center of gravity is provided when the tank is filled with liquid.