Frame members with tab and slot connections

1. A vehicle frame, comprising:

a plurality of frame members including at least two side plate members interlocked with a bottom plate member and a vertically loaded plate member;

the bottom plate member and the vertically loaded plate member are non-parallel; and

the side plate members support the bottom plate member and the vertically loaded plate member through a plurality of tab and slot connections;

wherein the bottom plate is configured to support an internal side plate member.

2. The frame of claim 1 , wherein the plurality of tab and slot connections is welded in place.

3. The frame of claim 1 , wherein at least a portion of the vertically loaded plate forms an obtuse angle with the bottom plate member.

4. The frame of claim 1 , wherein the vertically loaded plate member is bent along its width.

5. The frame of claim 1 , wherein the vertically loaded plate member has tab connections that are non-parallel.

6. The frame of claim 5 , wherein the non-parallel tab connections are configured to enter slots formed into the side plate member.

7. The frame of claim 1 , wherein the tab connections are located on an edge of at least one of the plate members.

8. The frame of claim 1 , wherein the vertically loaded member is configured to support the internal side plate member.

9. The frame of claim 1 , wherein the internal side plate member is configured to be attached and welded to the bottom plate member and vertically loaded member before the side plate member is attached and welded to the bottom plate member and vertically loaded member.

10. The frame of claim 1 , wherein the vertically loaded member is configured to attach to the internal side plate members and side plate members.

11. The frame of claim 10 , wherein the internal side plate member comprises tabs that enter slots in the vertically loaded member, the vertically loaded member comprises tabs that enter slots in the side plate member, interlocking and holding the frame members together.

12. The frame of claim 1 , wherein the plurality of frame members form a motorized trike frame.

13. The frame of claim 1 , wherein the tab and slot connections comprise slots that are shorter than tabs and the tabs extend beyond an exit of the slots.

14. The frame of claim 1 , wherein the side plate member is connected to the vertically loaded plate member at a rear end of the side plate member and also attached is a forward vertical member at a forward end of the side plate member.

15. The frame of claim 1 , wherein the plate members are additionally welded together at seams formed between the plate members.

16. The frame of claim 1 , wherein the tab and slot connections are configured to carry a weight of the frame members.

17. The frame of claim 1 , wherein the tab and slot connections are configured to position the frame members for welding.