Transportable and collapsible stage assembly

Claim 1

A TRANSPORTABLE STAGE ASSEMBLY COMPRISING: A PAIR OF SIMILAR COLLAPSIBLE SPACED APART FREE-STANDING AND SELFSUPPORTING WING UNITS, EACH WING UNIT BEING COMPRISED OF A PLURALITY OF RIGID PLANAR ELEMENTS HAVING OPPOSITE VERTICAL EDGES AND A SINGLE NARROW RIGID PLANAR COLUMN ELEMENT HAVING OPPOSITE VERTICAL EDGES AND AN UPPER END, EACH OF THE PLURALITY OF ELEMENTS AND THE COLUMN ELEMENT HAVING A STRAIGHT BOTTOM EDGE, THE COLUMN ELEMENT AND THE PLURALITY OF ELEMENTS BEING DISPOSED ADJACENT EACH OTHER IN A SERIAL ANGULARLY RELATED FREE STANDING ARRANGEMENT WITH THE BOTTOM EDGES THEREOF ALIGNED TO LIE IN A SUBSTANTIALLY COMMON SUPPORTING PLANE AND WITH THE COLUMN ELEMENT BEING DISPOSED AT ONE END OF THE SERIAL ARRANGEMENT, MEANS DISPOSED ALONG THE VERTICAL EDGES OF ADJACENT ELEMENTS OF SAID SERIAL ARRANGEMENT FOR HINGABLY CONNECTING SAID ADJACENT ELEMENTS TOGETHER, THE COLUMN ELEMENT OF EACH WING UNIT DEFINING AN UPWARDLY OPEN NOTCH AT ITS UPPER END; A RIGID YET COLLAPSIBLE ELONGATED PROSCENIUM ARCH BEAM EXTENDING BETWEEN THE SPACED APART WING UNITS AND REMOVABLY ENGAGED ADJACENT EACH OF ITS OPPOSITE ENDS IN THE COLUMN ELEMENT NOTCH OF THE COOPERATING WING UNIT FOR REMOVABLY SUPPORT OF THE BEAM BY THE WING UNITS AND THE COLUMN ELEMENTS THEREOF; AN EXTENSION MEMBER EXTENDING SUBSTANTIALLY AXIALLY OF THE BEAM FROM EACH END THEREOF, EACH EXTENSION MEMBER AT A LOCATION SPACED FROM THE COLUMN ELEMENT ENGAGED WITH THE COOPERATING WING UNIT AT A LOCATION SPACED FROM THE COLUMN ELEMENT OF SAID WING UNIT FOR SECURING AT LEAST THOSE ONES OF THE PLURALITY OF ELEMENTS OF THE WING UNIT BETWEEN THE COLUMN ELEMENT AND SAID LOCATION IN A SELECTED ANGULAR RELATION TO ONE ANOTHER; A TRAVERSABLE CURTAIN DISPOSED BETWEEN THE SPACED APART WING UNITS AND DEPENDING FROM THE BEAM TO A SURFACE SUPPORTING THE WING UNITS; AND SELECTIVELY OPERABLE MEANS CARRIED BY THE BEAM FOR SUPPORTING THE CURTAIN AND OPERABLE FOR OPENING AND CLOSING THE CURTAIN, THE CURTAIN IN ITS CLOSED CONDITION CLOSING THE SPACE BETWEEN THE WING UNITS.