Transverse-roller belts and modules

• US 7,540,368 B2
• Filed: 05/01/2007
• Issued: 06/02/2009
• Est. Priority Date: 05/01/2007
• Status: Active Grant

• Current Assignee: Laitram LLC
• Original Assignee: Laitram LLC
• Inventors: Weiser, David C.
• Primary Examiner(s): Deuble; Mark A
• Application Number:
  US11/742,614
• Publication Number:
  US 20080271978A1
• Time in Patent Office: 763 Days
• Field of Search: 198/370.9, 198/779, 198/853
• US Class Current: 198/370.09
• CPC Class Codes: B65G 17/40 Chains acting as load-carriers

Abstract

A modular roller-top conveyor belt with a dense array of rollers freely rotatable toward the sides of the belt. The rollers are arranged in offset lines and columns in a checkerboard pattern on the top side of the belt. The rollers rotate on axes parallel to the direction of belt travel. The rollers extend in the direction of belt travel over the hinge axes formed between adjacent rows of belt modules.

Claims

1. A conveyor belt comprising:

a plurality of rows of one or more belt modules, each row extending longitudinally in a direction of belt travel between a first end and a second end, laterally between a first side edge and a second side edge, and in thickness between a top side and a bottom side, wherein the rows are hingedly connected together first end to second end at hinge joints each defining a laterally disposed hinge axis allowing the conveyor belt to articulate;

a plurality of rollers supported at the top side of each row, the rollers having axles aligned in the direction of belt travel defining longitudinal axes of rotation for the rollers;

wherein at least some of the rollers in a row of belt modules extend over the hinge axis at the first end of the row.

2. A conveyor belt as in claim 1 comprising a plurality of roller supports upstanding from the top side of the rows to support the roller axles.

3. A conveyor belt as in claim 2 wherein each of the rollers is supported between a longitudinally spaced pair of the roller supports.

4. A conveyor belt as in claim 2 further including a mounting base fastened to the top side of a row and wherein the roller supports extend from the mounting base.

5. A conveyor belt as in claim 1 wherein the rollers are arranged in a checkerboard pattern.

6. A conveyor belt as in claim 1 wherein each row includes a single lateral line of rollers.

7. A conveyor belt as in claim 1 wherein each row includes a plurality of lateral lines of rollers.

8. A conveyor belt as in claim 7 wherein the rollers in a line are laterally offset from the rollers in an adjacent line.

9. A conveyor belt as in claim 1 wherein the rollers at the first end of a row are laterally offset from the rollers at the first end of an adjacent row.

10. A conveyor belt as in claim 1 wherein none of the rollers in a row extend over the hinge axis at the second end of the row.

11. A conveyor belt comprising:

a series of rows of one or more belt modules, each row extending longitudinally in a direction of belt travel between a first end and a second end, laterally between a first side edge and a second side edge, and in thickness between a top side and a bottom side, wherein the rows are hingedly connected together first end to second end at hinge joints defining laterally disposed hinge axes at each end of each row on which the conveyor belt articulates, wherein the hinge axes at opposite ends of a row define a first plane;

a plurality of roller supports upstanding from the top side of each row;

rollers supported in the roller supports and arranged to rotate toward the first and the second side edges;

wherein at least some of the rollers are positioned above the hinge axes so that a second plane perpendicular to the first plane through one of the hinge axes of the row intersects the rollers positioned above the hinge axes.

12. A conveyor belt as in claim 11 wherein each of the rollers is supported between a longitudinally spaced pair of the roller supports.

13. A conveyor belt as in claim 11 further including a mounting base fastened to the top side of a row and wherein the roller supports extend from the mounting base.

14. A conveyor belt as in claim 11 wherein the rollers are arranged in a checkerboard pattern.

15. A conveyor belt as in claim 11 wherein each row includes a single lateral line of rollers.

16. A conveyor belt as in claim 11 wherein each row includes a plurality of lateral lines of rollers.

17. A conveyor belt as in claim 16 wherein the rollers in a line are laterally offset from the rollers in an adjacent line.

18. A conveyor belt as in claim 11 wherein the rollers at the first end of a row are laterally offset from the rollers at the first end of an adjacent row.

19. A conveyor belt as in claim 11 wherein none of the rollers in a row extend over the hinge axis at the second end of the row.

20. A conveyor belt module comprising:

a first end and an opposite second end defining the length of the module;

a first side edge and an opposite second side edge defining the width of the module; and

a top side and an opposite bottom side defining the thickness of the module;

a first set of aligned hinge elements spaced apart across the width of the module body along the first end to define a first hinge axis through the aligned hinge elements;

a second set of aligned hinge elements spaced apart across the width of the module body along the second end to define a second hinge axis through the aligned hinge elements;

wherein the first and second hinge axes define a first plane;

a plurality of rollers supported at the top side for rotation toward the first and second side edges;

wherein at least some of the rollers intersect a second plane perpendicular to the first plane through the first hinge axis.

21. A conveyor belt module as in claim 20 comprising a plurality of roller supports upstanding from the top side of the module to support the rollers.

22. A conveyor belt module as in claim 21 wherein each of the rollers is supported between a pair of the roller supports spaced apart in the length direction.

23. A conveyor belt module as in claim 21 further including a mounting base fastened to the top side of the module and wherein the roller supports extend from the mounting base.

24. A conveyor belt module as in claim 20 wherein each module includes a single line of rollers extending along the width of the module.

25. A conveyor belt module as in claim 20 wherein each module includes a plurality of lines of rollers extending along the width of the module and wherein the rollers in a line are offset in the width direction from the rollers in an adjacent line.