Conveyor assembly

• US 6,959,804 B2
• Filed: 07/18/2003
• Issued: 11/01/2005
• Est. Priority Date: 07/19/2002
• Status: Active Grant

• Current Assignee: Activar Technical Products Group, Inc.
• Original Assignee: MagStar Technologies, Inc.
• Inventors: Hall, Timothy J., Koenig, Brian D., Helgerson, David E., Fresonke, John, Jensen, Steven A.
• Primary Examiner(s): DILLON JR, JOSEPH A
• Application Number:
  US10/622,623
• Publication Number:
  US 20040016626A1
• Time in Patent Office: 837 Days
• Field of Search: 198/805, 198/783, 198/781.01, 198/781.05, 198/781.06
• US Class Current: 198/805
• CPC Class Codes: B65G 13/06 Roller driving means
• CPC Class Codes: B65G 13/11 Roller frames
• CPC Class Codes: B65G 39/12 mounted on framework

Abstract

The conveyor apparatus disclosed herein is generally formed of a first rail and a second rail, each rail having a plurality of rollers. A portion of the rollers are desirably drive rollers, receiving power from an integral motor assembly. The motor generally comprises a stator that is coupled to the rail and an outer roller assembly rotatably coupled to the rail. The roller assembly includes an outer circumferential magnetized portion positioned in surrounding engagement to the motor stator and functions both as the motor rotor and the conveying surface of the roller. Non-slip roller covering material may be attached to the exterior of the roller assembly. A circuit board having logic controls is preferably in communication with at least one sensor and the motor rotor to regulate rotation of the motor rotor during use of the conveyor.

Claims

1. A conveyor for moving an object comprising:

a first rail having a rail aperture;

a second rail positioned substantially parallel to said first rail;

a roller coupled to said first rail;

a motor arranged to engage said roller;

a circuit board having a controller arranged to control said motor; and

a sensor mounted to said circuit board;

wherein said circuit board is mounted to said first rail such that said sensor may detect the presence of an object upon said roller through said rail aperture.

2. The conveyor of claim 1, wherein said controller is arranged to operate said motor depending upon a signal received from said sensor.

3. The conveyor of claim 2, further comprising:

a second roller coupled to said first rail;

a second motor arranged to engage said second roller; and

a slave circuit board having a controller arranged to control said second motor;

wherein said slave circuit board is arranged to operate said second motor depending upon a signal received from said sensor.

4. The conveyor of claim 2, further comprising:

a second roller coupled to said first rail;

a second motor arranged to engage said second roller;

a second circuit board having a second controller arranged to control said second motor; and

a second sensor mounted to said second circuit board;

wherein said second controller is arranged to operate said second motor depending upon a signal received from said second sensor.

5. The conveyor of claim 4, wherein said circuit board and said second circuit board communicate with one another and may adjust operation of said motor and said second motor with respect to one another.

6. The conveyor of claim 1, further comprising a second sensor mounted to said circuit board, wherein said controller is arranged to operate said motor depending upon signals received from said sensor and from said second sensor.

7. The conveyor of claim 6, wherein said second sensor is arranged to detect the presence of an object upon said roller through said rail aperture.

8. The conveyor of claim 6, further comprising a second aperture in said rail, wherein said second sensor is arranged to detect the presence of an object upon said roller through said second rail aperture.

9. The conveyor of claim 1, further comprising a recessed portion in said rail, wherein a portion of said motor is located within said recessed portion.

10. The conveyor of claim 1, said motor comprising a stator and a rotor, the stator being mounted to the first rail, and said roller comprising the rotor, said rotor comprising a circumferential plurality of alternating magnetic poles arranged about the stator.

11. The conveyor of claim 10, the first rail further comprising a recessed pocket proximal to said roller, and a portion of the motor is located within said recessed pocket.

12. The conveyor of claim 11, the motor further comprising a sealed bearing, the sealed bearing being located within said recessed pocket.

13. The conveyor of claim 12, wherein the stator is mounted outside of the recessed portion adjacent to said sealed bearing.

14. The conveyor of claim 1, further comprising a passive roller mounted to the second rail, the conveyor having a transport tray width comprising the distance between an outer edge of said roller and an outer edge of said passive roller, the transport tray width measured perpendicular to said first rail, the conveyor having an overall device width comprising the distance between an outer edge of said first rail and an outer edge of said second rail, the overall device width measured perpendicular to said first rail, wherein the overall device width is not more than 1.5 inches greater than the transport tray width.

15. The conveyor of claim 12, wherein said roller extends 0.6 inches or less into the transport tray width.

16. A conveyor for moving an object comprising:

a first rail having a rail aperture;

a second rail positioned substantially parallel to said first rail;

a roller rotatably coupled to said first rail;

a motor arranged to rotate said roller, the motor comprising a stator and a rotor, the stator being mounted to the first rail;

a circuit board having a controller arranged to control said motor;

a sensor mounted to said circuit board;

said first rail comprising said circuit board wherein said sensor may detect the presence of an object upon roller through said rail aperture; and

said roller comprising the rotor, said rotor comprising a circumferential plurality of alternating magnetic poles arranged about the stator.