Conveyor belt having rollers that displace objects

• US 7,588,137 B2
• Filed: 03/25/2008
• Issued: 09/15/2009
• Est. Priority Date: 04/13/2007
• Status: Active Grant

• Current Assignee: Laitram LLC
• Original Assignee: Laitram LLC
• Inventors: Fourney, Matthew L.
• Primary Examiner(s): Bidwell; James R
• Application Number:
  US12/054,663
• Publication Number:
  US 20080251359A1
• Time in Patent Office: 539 Days
• Field of Search: 198/779, 198/850, 198/853, 198/781.08, 198/370.01, 198/370.09
• US Class Current: 198/779
• CPC Class Codes: B65G 17/24 comprising a series of rollers which are moved , e.g. over a supporting surface, by the traction element to effect conveyance of loads or load-carriers
• CPC Class Codes: B65G 17/32 Individual load-carriers
• CPC Class Codes: B65G 17/40 Chains acting as load-carriers

Abstract

In one embodiment, a conveyor belt includes multiple roller sets, each roller set including a first roller and a second roller, the first and second rollers being placed in contact with each other such that driving of one of the rollers in a first angular direction causes rotation of the other roller in a second, opposite angular direction.

Claims

1. A conveyor belt comprising:

a top surface;

a bottom surface; and

multiple roller sets that are mounted to the conveyor belt, each roller set including a bottom roller and a top roller, the bottom roller extending below the bottom surface of the conveyor belt so as to be adapted to contact a drive mechanism and the top roller being adapted to contact objects conveyed by the conveyor belt, the bottom and top rollers further being configured such that contact between the bottom rollers and the drive mechanism causes the bottom rollers to rotate in a first direction and wherein rotation of the bottom rollers causes the top rollers to rotate in a second direction opposite to the first direction.

2. The conveyor belt of claim 1, wherein the bottom and top rollers directly contact each other.

3. The conveyor belt of claim 1, wherein the first and second rollers have axes of rotation that are substantially perpendicular to a longitudinal direction of the conveyor belt.

4. The conveyor belt of claim 1, wherein the first and second rollers have axes of rotation that are arranged at an angle relative to a longitudinal direction of the conveyor belt.

5. The conveyor belt of claim 1, further comprising a plurality of conveyor belt modules that are linked together to form the conveyor belt, at least some of the modules comprising a roller set.

6. The conveyor belt of claim 5, wherein the conveyor belt modules that comprise a roller set include an inner space in which the roller set is positioned.

7. A conveyor comprising:

a conveyor belt;

a roller drive mechanism; and

multiple roller sets, each roller set including a bottom roller and a top roller arranged in a vertically-stacked configuration, the bottom roller of each roller set being adapted to contact the roller drive mechanism and the top roller being adapted to contact objects conveyed by the conveyor;

wherein contact between the bottom rollers and the drive mechanism causes the bottom rollers to rotate in a first direction and wherein rotation of the bottom rollers causes the top rollers to rotate in a second direction opposite to the first direction.

8. The conveyor of claim 7, wherein the bottom and top rollers directly contact each other.

9. The conveyor of claim 7, wherein the first and second rollers have axes of rotation that are substantially perpendicular to a longitudinal direction of the conveyor.

10. The conveyor of claim 7, wherein the first and second rollers have axes of rotation that are arranged at an angle relative to a longitudinal direction of the conveyor.