Collapsible roof constructions

Claim 1

A COLLAPSIBLE ROOF CONSTRUCTION FOR A VEHICLE TO PROVIDE MORE HEADROOM THEREIN, COMPRISING A BASE FRAME ADAPTED TO BE ATTACHED TO THE VEHICLE, SAID BASE FRAME INCLUDING A REAR FRAME MEMBER EXTENDING TRANSVERSELY ACROSS THE VEHICLE AND HAVING FRONT AND REAR EDGES, A ROOF TOP LOCATED OVER SAID BASE FRAME, AND MEANS CONNECTING SAID ROOF TOP TO SAID BASE FRAME FOR MOVEMENT RELATIVE THERETO BETWEEN A LOWER COLLAPSED POSITION WHERE SAID ROOF TOP IS CLOSELY ADJACENT TO SAID FRAME AND AN UPPER EXPANDED POSITION WHERE SAID ROOF TOP IS SITUATED OVER SAID FRAME AT A GREATER DISTANCE THEREFROM THAN WHEN SAID ROOF TOP IS IN SAID COLLAPSED POSITION, SAID CONNECTING MEANS ALSO CONNECTING SAID ROOF TOP TO SAID BASE FRAME FOR LONGITUDINAL MOVEMENT RELATIVE THERETO, WHEN SAID ROOF TOP IS MOVED BETWEEN SAID COLLAPSED AND EXPANDED POSITIONS THEREOF, SO THAT SAID ROOF TOP IN ITS EXPANDED POSITION IS LONGITUDINALLY DISPLACED WITH RESPECT TO SAID BASE FRAME AS COMPARED TO THE POSITION WHICH SAID ROOF TOP HAS WITH RESPECT TO SAID BASE FRAME WHEN SAID ROOF TOP IS IN ITS COLLAPSED POSITION, SAID CONNECTINGMEANS INCLUDING A REAR ARCUATELY MOVABLE PANEL HINGEDLY CONNECTED AT THE BOTTOM THEREOF TO THE BASE FRAME AND HINGEDLY CONNECTED AT ITS UPPER END TO THE ROOF TOP, SAID REAR PANEL BEING HINGEDLY CONNECTED AT SAID BOTTOM THEREOF TO SAID REAR FRAME MEMBER ADJACENT SAID FRONT EDGE THEREOF.