Abstract: A vehicle door formed primarily from plastic material and a structure for reinforcing the door is disclosed. The door of the present invention includes a metal reinforcing beam extending longitudinally from an upper hinge support at a first end to a door latch at a second end. The beam has a hollow box like cross section and is affixed an inner surface of a door outer wall. A first end of the beam includes an upper hinge support, and a second end of the beam includes a latch support.

Abstract: A frame for vehicle folding tops is disclosed. The folding top of the present invention is configured to be moved from a deployed position covering the vehicle passenger compartment to a folded position in one single continuous motion. No sliding linkages or over center linkages are employed. The frame comprises only three bows to support the folding top, and when the frame has been moved to a folded position and the bows abut each other at a rear deck of the vehicle. A rear bow is pivotally attached at a lower end to a rear portion of the vehicle passenger compartment in a pivoting manner. Front and center bows are pivotally supported at their open ends by the rear bow. The front bow is folded upward at a point forward of the center bow, and a scissor linkage interconnecting the front bow and the center bow assures that in the folded position the bows lie parallel and abut each other at a rear deck of the vehicle.