Acoustical folding door

Claim 1

AN ACOUSTICAL FOLDING DOOR CONSISTING OF A PAIR OF FOLDING PANEL ASSEMBLIES ORIENTED ALONGSIDE OF AND SPACED FROM EACH OTHER WITH EACH PANEL ASSEMBLY INCLUDING A PLURALITY OF RIGID PANELS ORIENTED IN EDGE TO EDGE RELATION AND PROVIDED WITH A HINGE STRIP INTERCONNECTING ADJACENT EDGES AND FORMING A SEAL THEREBETWEEN, MEANS SUPPORTING SAID ASSEMBLIES FROM A TRACKWAY FOR MOVEMENT FROM AN EXTENDED ACCORDION FOLDED CONDITION TO A RETRACTED COLLAPSED CONDITION, SAID MEANS INCLUDING MEANS ARTICULATELY INTERCONNECTING THE ASSEMBLIES WHEREBY THE ASSEMBLIES WILL MOVE FROM THE EXTENDED TO THE RETRACTED POSITION GENERALLY IN A SIMULTANEOUS MANNER, THE ENDMOST PANELS OF EACH PANEL ASSEMBLY BEING INTERCONNECTED AND ADAPTED FOR ENGAGEMENT WITH THE PERIPHERY OF AN OPENING, AND MEANS AT THE UPPER AND LOWER EDGES OF SAID PANEL ASSEMBLIES FOR SEALING ENGAGEMENT WITH A TOP AND BOTTOM SURFACE, SAID MEANS INTERCONNECTING THE ASSEMBLIES INCLUDING A RIGID CONNECTING PLATE HAVING THE ENDS THEREOF HINGEDLY CONNECTED TO OPPOSITELY DISPOSED RIGID PANELS ON THE PANEL ASSEMBLIES.