Apparatus and method for endgate with angle adjustment

• US 7,909,534 B1
• Filed: 07/31/2007
• Issued: 03/22/2011
• Est. Priority Date: 07/31/2007
• Status: Expired due to Fees

• Current Assignee: Astec Industries Incorporated (Johnson Crushers International)
• Original Assignee: Astec Industries Incorporated (Johnson Crushers International)
• Inventors: Cartwright, Jeff, Comer, Kevin
• Primary Examiner(s): Addie; Raymond W
• Application Number:
  US11/888,110
• Time in Patent Office: 1,330 Days
• Field of Search: 404 83-118
• US Class Current: 404/118
• CPC Class Codes: E01C 19/42 Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping or vibrating for distributing only E01C19/12; hand-actuated smoothing tools E01C19/44

Abstract

An endgate comprising a mounting bracket adapted to be attached to a screed assembly, a pivoting plate adapted to be pivotally attached to the mounting bracket, a sliding plate, a pavement contacting surface and a support adapted to be pivotally moved with the pivoting plate, a means for applying force to the pavement contacting surface disposed between the support and the sliding plate, a first adjustment means adapted to adjust the amount of force applied by the means for applying force to the pavement contacting surface and a second adjustment means adapted to adjust the angle of the pavement contacting surface. A method comprising providing such an endgate, adjusting the angle of the pavement contacting surface and adjusting the amount of force applied by the means for applying force to the pavement contacting surface.

Claims

1. An endgate adapted to be attached to a screed assembly and provide an outer, substantially vertical, finished edge to asphalt applied by the screed assembly, said endgate comprising:

(a) a mounting bracket, said mounting bracket being adapted to be attached to the screed assembly;

(b) a pivoting plate, said pivoting plate being pivotally attached to the mounting bracket and said pivoting plate being adapted to provide the outer, substantially vertical, finished edge to the asphalt applied by the screed assembly;

(c) a sliding plate, said sliding plate being adapted to be pivotally moved with the pivoting plate;

(d) a pavement contacting surface, said pavement contacting surface being adapted to be pivotally moved with the pivoting plate;

(e) a support, said support being adapted to be pivotally moved with the pivoting plate;

(f) a means for applying force to the pavement contacting surface, said means for applying force to the pavement contacting surface being disposed between the support and the sliding plate;

(g) a first adjustment means, said first adjustment means being adapted to adjust the amount of force applied by the means for applying force to the pavement contacting surface; and

(h) a second adjustment means, said second adjustment means being adapted to adjust the angle of the pavement contacting surface.

2. The endgate of claim 1 wherein the pivoting plate, the support, the means for applying force to the pavement contacting surface and the pavement contacting surface remain in a substantially fixed disposition relative to each other when the pavement contacting surface is pivotally moved.

3. The endgate of claim 1 wherein the first adjustment means includes a first adjustment means first end that is mounted to the sliding plate and a first adjustment means second end that is mounted to the pivoting plate.

4. The endgate of claim 1 wherein the second adjustment means includes a second adjustment means first end that is mounted to the mounting bracket and a second adjustment means second end that is mounted to the pivoting plate.

5. The endgate of claim 1 wherein the sliding plate includes a flange, said flange being adapted to bear against the means for applying force to the pavement contacting surface.

6. The endgate of claim 5 wherein the flange is adapted to be moved relative to the pivoting plate in a direction substantially perpendicular to the pavement contacting surface.

7. The endgate of claim 5 wherein the means for applying force to the pavement contacting surface comprises a plurality of springs, each of said plurality of springs being biased between the support and the flange.

8. The endgate of claim 7 wherein each of the plurality of springs is disposed around a rod.

9. The endgate of claim 7 wherein each of the plurality of springs is maintained in a substantially perpendicular disposition relative to the pavement contacting surface when the pavement contacting surface is pivotally moved.

10. The endgate of claim 7 wherein each of the plurality of springs applies a substantially equal amount of force to the pavement contacting surface.

11. The endgate of claim 1 wherein the first adjustment means and the second adjustment means are jacks.

12. An endgate adapted to be attached to a screed assembly and provide an outer, substantially vertical, finished edge to asphalt applied by the screed assembly, said endgate comprising:

(a) a mounting bracket, said mounting bracket being adapted to be attached to the screed assembly;

(b) a pivoting plate, said pivoting plate being pivotally attached to the mounting bracket;

(c) a pair of spring supports, each of said spring supports being adapted to be pivotally moved with the pivoting plate;

(d) a spring plate, said spring plate having a flange and being adapted to be pivotally moved with the pivoting plate and slidingly moved relative to the pivoting plate;

(e) a wear shoe, said wear shoe being adapted to be pivotally moved with the pivoting plate;

(f) a pair of springs, each of said pair of springs being biased between one of the pair of spring supports and the flange of the spring plate, and each of said pair of springs being disposed around a rod;

(g) a first jack, said first jack being adapted to adjust the amount of force applied to the pair of springs and having a first jack first end that is mounted to the spring plate and a first jack second end that is mounted to the pivoting plate; and

(h) a second jack, said second jack being adapted to adjust the angle of the pivoting plate and having a second jack first end that is mounted to the mounting bracket and a second jack second end that is mounted to the pivoting plate.

13. The endgate of claim 12 wherein the pair of springs are maintained in a substantially perpendicular disposition relative to the wear shoe when the pivoting plate is pivotally moved.

14. The endgate of claim 12 wherein each of the plurality of springs applies a substantially equal amount of force to the pavement contacting surface.

15. The endgate of claim 12 wherein the pivoting plate, the spring supports, the spring plate, the pair of springs and the wear shoe remain in a fixed disposition relative to each other when the pivoting plate is pivotally moved.

16. The endgate of claim 12 wherein the spring plate is adapted to be slidingly moved relative to the pivoting plate in a direction substantially perpendicular to the wear shoe.

17. A method for an endgate with angle adjustment that is adapted to be attached to a screed assembly, said method comprising:

(a) providing an endgate comprising;

(1) a mounting bracket, said mounting bracket being adapted to be attached to the screed assembly;

(2) a pivoting plate, said pivoting plate being pivotally attached to the mounting bracket and said pivoting plate being adapted to provide an outer, substantially vertical, finished edge to asphalt applied by the screed assembly;

(3) a sliding plate, said sliding plate being adapted to be pivotally moved with the pivoting plate;

(4) a pavement contacting surface, said pavement contacting surface being adapted to be pivotally moved with the pivoting plate;

(5) a support, said support being adapted to be pivotally moved with the pivoting plate;

(6) a means for applying force to the pavement contacting surface, said means for applying force to the pavement contacting surface being disposed between the support and the sliding plate;

(7) a first adjustment means, said first adjustment means being adapted to adjust the amount of force applied by the means for applying force to the pavement contacting surface; and

(8) a second adjustment means, said second adjustment means being adapted to adjust the angle of the pavement contacting surface;

(b) adjusting the angle of the pavement contacting surface;

(c) adjusting the amount of force applied by the means for applying force to the pavement contacting surface;

(d) applying asphalt to a surface with the screed assembly; and

(e) providing the outer, substantially vertical, finished edge to the asphalt applied by the screed assembly.

18. The method of claim 17 wherein the pivoting plate, the support, the means for applying force to the pavement contacting surface and the pavement contacting surface remain in a substantially fixed disposition relative to each other when the pavement contacting surface is pivotally moved.

19. The method of claim 17 wherein the means for applying force to the pavement contacting surface is maintained in a substantially perpendicular disposition relative to the pavement contacting surface when the pavement contacting surface is pivotally moved.

20. The method of claim 17 wherein the sliding plate is adapted to be slidingly moved relative to the pivoting plate in a direction substantially perpendicular to the pavement contacting surface.