Apparatus and method for transporting cargo over a cargo bed

1. An apparatus, comprising:

a first rail having a first key and a second key;

a first track member including (a) a first keyway having a first end and a second end, (b) a second keyway axially aligned with said first end and (c) a third keyway axially aligned with said second end;

a second rail having a third key and a fourth key and a second track member including (a) a fourth keyway having a third end and a fourth end, (b) a fifth keyway aligned with the third end and (c) a sixth keyway aligned with the fourth end; and

a tonneau cover inboard of said first track member and said second track member.

2. The apparatus of claim 1 wherein

said first end and said second end of said first keyway are both +-shaped.

3. The apparatus of claim 1 , wherein said second keyway and said third keyway are both +-shaped.

4. The apparatus of claim 3 , wherein said second keyway and said third keyway are angularly offset from said first end and said second end.

5. The apparatus of claim 4 , further including a first clamp lever connected to said first key and a second clamp lever connected to said second key.

6. The apparatus of claim 5 , including a first screw connecting said first clamp lever to said first key and a second screw connecting said second clamp lever to said second key.

7. The apparatus of claim 6 , wherein said first screw includes a first shaft having a first head at a first proximal end and said first key at a first distal end.

8. The apparatus of claim 7 , wherein said second screw includes a second shaft having a second head at a second proximal end and said second key at a second distal end.

9. A method of carrying cargo over a cargo bed, comprising:

raising a first rail from a stowed position into a deployed position;

releasing a first end of said first rail from a first track member;

pivoting said first end of said first rail over said cargo bed; and

engaging said first end of said first rail with a second track member at an opposite side of said cargo bed.

10. The method of claim 9 , including unclamping said first end from said first track member.

11. The method of claim 10 , including displacing a first key at said first end through a second keyway and a first keyway of said first track member to release said first end from said first track member.

12. The method of claim 11 , including inserting said first key through a fourth keyway in said second track member to engage said first end of said first rail with said second track member.

13. The method of claim 12 , including sliding said first key along a second channel in said second track member and then clamping said first end to said second track member.