Arm apparatus for mounting electronic devices with cable management system

1. A reinforced channel for use in an extension arm that mounts a device to a support, said channel comprising

a U-shaped body having first and second spaced apart ends, said body including a pair of spaced apart sidewalls, each sidewall having an upper edge, and a bottom wall therebetween;

and a rib assembly within said body between said sidewalls overlying said bottom wall, said rib assembly comprising a plurality of first ribs projecting upwardly from said bottom wall transversely from one of said sidewalls to the other said sidewall and a plurality of second ribs projecting upwardly from said bottom wall at an oblique angle to said sidewalls;

wherein said rib assembly extends to a location below said upper edge on each sidewall.

2. The channel of claim 1 , wherein said rib assembly is an integral assembly with said bottom wall.

3. The channel of claim 1 , wherein said rib assembly is an integral assembly separate from said bottom wall.

4. The channel of claim 3 , wherein said rib assembly further includes a pair of spaced apart side ribs, said first and second ribs connected therebetween.

5. The channel of claim 4 , wherein said side ribs are an integral assembly with said first and second ribs.

6. The channel of claim 1 , further including a first roller at said first end of said body and a second roller at said second end of said body.

7. The channel of claim 1 , wherein said first and second ribs form triangular shaped openings therebetween.

8. The channel of claim 1 , wherein said first and second ribs comprise elongated ribs.

9. A reinforced channel for use in an extension arm that mounts a device to a support, said channel comprising a U-shaped body having first and second spaced apart ends, said body including a pair of spaced apart sidewalls and a bottom wall therebetween; a first roller at said first end of said body and a second roller at said second end of said body; and a rib assembly within said body between said sidewalls overlying said bottom wall, said rib assembly comprising a plurality of first ribs projecting upwardly from said bottom wall transversely between said sidewalls and a plurality of second ribs projecting upwardly from said bottom wall at an oblique angle to said sidewalls, wherein said first and second rollers and said rib assembly are an integral assembly with said U-shaped body.

10. The channel of claim 9 , wherein said rib assembly further includes a pair of spaced apart side ribs, said first and second ribs connected therebetween.

11. The channel of claim 10 , wherein said first and second ribs form triangular shaped openings therebetween.

12. A reinforced channel for use in an extension arm that mounts a device to a support, said channel comprising

a U-shaped body having first and second spaced apart ends, said body including a pair of spaced apart sidewalls, each sidewall having an upper edge and a bottom wall therebetween;

and a plurality of ribs within said body between said sidewalls projecting upwardly from said bottom wall;

wherein said plurality of ribs extend to a location below said upper edge, said ribs forming an open channel extending between said first and second ends of said body between said upper edges of said sidewalls and said plurality of ribs.

13. The channel of claim 12 , wherein said ribs are integral with said bottom wall.

14. The channel of claim 12 , wherein said ribs are separate from said bottom wall.

15. The channel of claim 14 , wherein said ribs further include a pair of spaced apart side ribs.

16. The channel of claim 12 , further including a first roller at said first end of said body and a second roller at said second end of said body.

17. The channel of claim 16 , wherein said first and second rollers and said ribs are integral with said body.

18. The channel of claim 1 , wherein said ribs form triangular shaped openings therebetween.

19. A reinforced channel assembly for use in an extension arm that mounts a device to a support, said channel assembly comprising first and second channels each including a U-shaped body having first and second ends, each said body including a pair of spaced apart sidewalls and a bottom wall therebetween, wherein said first channel is longitudinally nested within said second channel forming a longitudinal opening therebetween; and a rib assembly within at least one of said U-shaped bodies between the sidewalls thereof overlying the bottom wall thereof, said rib assembly comprising a plurality of first ribs projecting upwardly from said bottom wall transversely between said sidewalls and a plurality of second ribs projecting upwardly from said bottom wall at an oblique angle to said sidewalls.

20. The channel assembly of claim 19 , wherein said rib assembly is an integral assembly with said bottom wall.

21. The channel assembly of claim 19 , wherein said rib assembly is an integral assembly separate from said bottom wall.

22. The channel assembly of claim 19 , wherein said rib assembly further includes a pair of spaced apart side ribs, said first and second ribs connected therebetween.

23. The channel assembly of claim 19 , wherein said side ribs are an integral assembly with said first and second ribs.

24. The channel assembly of claim 19 , wherein said first channel includes a first and second roller at the first and second ends thereof and said second channel includes a third and fourth roller at the first and second ends thereof.

25. The channel assembly of claim 24 , wherein said first and second roller and said rib assembly are an integral assembly with said first channel.

26. The channel assembly of claim 19 , wherein the sidewalls of said first channel are arranged overlying the sidewalls of said second channel when said first and second channels are nested together.

27. The channel assembly of claim 26 , further including first and second spaced apart endcaps, wherein one end of said first and second channels are pivotably attached to said first endcap and the other end of said first and second channels are pivotably attached to said second endcap.

28. A reinforced channel assembly for use in an extension arm that mounts a device to a support, said channel assembly comprising first and second channels each including a U-shaped body having first and second ends, each said body including a pair of spaced apart sidewalls and a bottom wall therebetween, wherein said first channel is longitudinally nested within said second channel forming a longitudinal opening therebetween; and a plurality of ribs within at least one of said U-shaped bodies between the sidewalls thereof projecting upwardly from said bottom wall.

29. The channel assembly of claim 28 , wherein said ribs are integral with said bottom wall.

30. The channel assembly of claim 28 , wherein said ribs are separate from said bottom wall.

31. The channel assembly of claim 30 , wherein said ribs further includes a pair of spaced apart side ribs.

32. The channel assembly of claim 28 , wherein said first channel includes a first and second roller at the first and second ends thereof and said second channel includes a third and fourth roller at the first and second ends thereof.

33. The channel assembly of claim 32 , wherein said first and second roller and said ribs are an integral assembly with said first channel.

34. The channel assembly of claim 28 , wherein the sidewalls of said first channel are arranged overlying the sidewalls of said second channel when said first and second channels are nested together.

35. The channel assembly of claim 34 , further including first and second spaced apart endcaps, wherein one end of said first and second channels are pivotably attached to said first endcap and the other end of said first and second channels are pivotably attached to said second endcap.

36. The channel of claim 12 wherein said channel is adapted to receive a gas spring extending between said first and second ends of said body.