Grounding device for automated guided vehicles

• US 20080112104A1
• Filed: 11/10/2006
• Published: 05/15/2008
• Est. Priority Date: 11/10/2006
• Status: Active Grant

• Current Assignee: Jervis B Webb Company (Daifuku Company Limited)
• Original Assignee: Jervis B Webb Company (Daifuku Company Limited)
• Inventors: Stewart, Brian G.
• Granted Patent: US 7,400,486 B2
• Time in Patent Office: Days
• US Class Current: 361/217
• CPC Class Codes: H05F 3/025 Floors or floor coverings specially adapted for discharging static charges

Abstract

A device and method is provided for use in connection with electrically grounding an automated guided vehicle. A grounding strap is suspended from the automated vehicle for contacting an electrical conductive ground device mounted to a floor along a travel path of the automated guided vehicle. In operation, the grounding strap contacts the electrically conductive ground device to electrically ground electronics used in connection with the guided vehicle.

Claims

1. A system for electrically grounding an automated guided vehicle comprising:

an automated guided vehicle operable to move along a predetermined path defined on a floor;

a grounding strap suspended from said automated guided vehicle;

at least one power source for providing power to said automated guided vehicle;

a ground wire extending from said power source to said grounding strap; and

a plurality of ground devices mounted in said floor and each operable to contact said grounding strap during movement of said automated guided vehicle along said predetermined path to thereby electrically ground said automated guided vehicle, wherein said plurality of ground devices are fixed to said floor only along said path.

2. The system of claim 1, wherein at least one of said plurality of ground devices arc formed as a rod.

3. The system of claim 1, wherein said plurality of grounding devices are spaced an equal predetermined distance from one another.

4. The system of claim 1, wherein at least one of said plurality of grounding devices is made of copper.

7. The system of claim 1, wherein at least one of said plurality of grounding devices include a reflector.

10. The system of claim 1, wherein said ground wire extends from said power source to a frame of said automated guided vehicle.

11. The system of claim 10, wherein said grounding strap is mounted to said frame.

5. (canceled)

6. (canceled)

8. (canceled)

9. (canceled)

12. A method for electrically grounding an automated guided vehicle comprising the steps of:

mounting an electrically conductive grounding strap to said automated guided vehicle;

connecting a negative wire of a power source of said automated guided vehicle to said ground strap;

fixing a plurality of electrically conductive ground devices relative to a surface to be traversed by said automated guided vehicle;

positioning said grounding strap to be in contact with said ground device when said automated guided vehicle traverses said surface;

defining a path of travel for the automated guided vehicle relative to the surface; and

arranging the plurality of ground devices only alone the path of travel.

18. The method of claim 12 wherein said connecting step is further defined as:

connecting the negative wire of the power source of said automated guided vehicle directly to said ground strap.

19. The method of claim 12 wherein said mounting step is further defined as:

mounting the electrically conductive grounding strap to a trailing edge of said automated guided vehicle.

13-17. -17. (canceled)