Folding door structure

Claim 1

A FOLDING DOOR STRUCTURE COMPRISING A PLURALITY OF RIGID PANELS INCLUDING FULL PANEL SECTIONS, HALF PANEL SECTIONS, A LEAD POST, AND A JAMB POST, SAID PANELS BEING INTERCONNECTED BY HINGE MEMBERS RECEIVED IN SIDE MARGIN HINGE GROOVES FORMED IN SAID PANELS FOR ACCORDION-TYPE FOLDING INTO AND OUT OF STACKED RELATION, SAID FULL PANEL SECTIONS AND SAID LEAD POST HAVING TROLLEY SUPPORT MEANS ATTACHED THERETO FOR HANGING FROM AN OVERHEAD TRACK HOUSING, EACH OF THE HINGE GROOVES BEING PARTIALLY DEFINED BY A PROJECTING RIB-LIKE PORTION LOCATED ADJACENT OPPOSITE FACES OF A PANEL ALONG OPPOSITE SIDE MARGINS THEREOF, SAID HINGE MEMBERS EACH HAVING RIB-LIKE SIDE MARGINS RECEIVED IN ADJACENT HINGE GROOVES OF ADJACENT PANELS, THE PROJECTING RIB-LIKE PORTIONS DEFINING SAID HINGE GROOVES BEING ARRANGED FOR ABUTMENT UPON COMPLETE UNFOLDING OF SAID PANELS TO LIMIT MOVEMENT THEREOF INTO COPLANAR RELATION, SAID FULL PANEL SECTIONS EACH CARRYING A HANGER MEMBER ATTACHED THERETO AT ONE END AND TO A TROLLEY AT THE OTHER END WHICH CONSTITUTES SAID TROLLEY SUPPORT MEANS, SAID HANGER MEMBER BEING ARRANGED TO PIVOT ABOUT ITS LONGITUDINAL AXIS WITH SAID FULL PANEL SECTION RELATIVE TO SAID TROLLEY DURING OPERATION OF SAID DOOR STRUCTURE, AND HANGER MEMBER GUIDE MEANS CARRIED BY SAID TROLLEY AND PROJECTING THEREFROM FOR ENGAGEMENT WITH A PORTION OF A TRACK HOUSING, SAID GUIDE MEANS INCLUDING HANGER MEMBER PIVOT CONTROL MEANS IN OPERATIVE ASSOCIATION WITH SAID OTHER END OF SAID HANGER MEMBER.