Overhead door construction

Claim 1

AN OVERHEAD DOOR FOR USE WITH A VERTICALLY ARRANGED DOOR OPENING AND MOVABLE BETWEEN A LOWER CLOSED POSITION AND AN UPPER OPEN POSITION WITH RESPECT TO THE DOOR OPENING, SAID DOOR COMPRISING A PLURALITY OF HORIZONTALLY DISPOSED AND HINGEDLY INTERCONNECTED DOOR SECTIONS, EACH OF SAID DOOR SECTIONS HAVING A COMPRESSIBLE WATER-REPELLENT PLASTIC PANEL EXTENDING SUBSTANTIALLY THE WIDTH AND HEIGHT THEREOF AND A FRAME SURROUNDING SAID PLASTIC PANEL; SAID PLASTIC PANEL INCLUDING A SUBSTANTIALLY FLAT SHEET OF PLASTIC SHAPED TO PROVIDE A FORWARDLY DISPOSED BODY WITH A LONGITUDINALLY EXTENDING FLANGE THEREON ALONG THE TOP AND BOTTOM EDGES THEREOF AND A PLURALITY OF HORIZONTALLY EXTENDING AND REARWARDLY PROJECTING RIBS; SAID FRAME INCLUDING A SPACED-APART PAIR OF HORIZONTAL RAILS EXTENDING THE WIDTH THEREOF AND A PAIR OF SPACED-APART SIDE RAILS INTERCONNECTING THE ADJACENT ENDS OF SAID HORIZONTAL RAILS, EACH OF SAID HORIZONTAL RAILS HAVING A PAIR OF SPACED-APART HOLDING FLANGES ADJACENT TO THE FRONT EDGE THEREOF EXTENDING SUBSTANTIALLY THE LENGTH THEREOF TOWARD THE OTHER HORIZONTAL RAIL AND SNUGLY RECEIVING AND HOLDING THE ADJACENT PANEL FLANGE, THE INNER ONE OF SAID HOLDING FLANGES EXTENDING SUBSTANTIALLY BEYOND THE LONGITUDINAL FREE EDGE OF THE OUTER ONE OF SAID HOLDING FLANGES AND PROVIDING A FLAT SURFACE EXTENDING THE LENGTH THEREOF FOR SUPPORTING THE ADJACENT PANEL FLANGE, THE LONGITUDINAL FREE EDGE OF SAID OUTER HOLDING FLANGE BEING PRESSED INTO THE ASSOCIATED PANEL FLANGE AND URGING SAID PANEL FLANGE AGAINST SAID FLAT SURFACE TO FORM A STRONG AND WATERTIGHT JOINT BETWEEN SAID HOLDING FLANGES AND SAID PANEL FLANGE, EACH OF SAID SIDE RAILS HAVING AN OUTER WALL AND A FRONT WALL SUBSTANTIALLY PERPENDICULAR TO SAID OUTER WALL AND A REAR WALL SUBSTANTIALLY PERPENDICULAR TO SAID OUTER WALL AND SUBSTANTIALLY PARALLEL TO SAID FRONT WALL, EACH OF SAID OUTER WALLS COVERING THE ADJACENT END OF SAID PLASTIC PANEL FROM THE FRONT SURFACES OF SAID BODY TO THE REAR SURFACES OF SAID RIBS, SAID FRONT WALLS HAVING THE FRONT SURFACES THEREOF IN SUBSTANTIALLY THE SAME PLANE AS THE FRONT SURFACE OF THE FORWARD DEPENDING FLANGE OF SAID UPPER HORIZONTAL RAIL AND THE FRONT SURFACE OF THE FORWARD UPSTANDING FLANGE ON SAID LOWER HORIZONTAL RAIL AND EXTENDING THEREBETWEEN.