Adjustable, foldable, telescoping structure

Claim 1

A FOLDABLE STRUCTURE COMPRISING A PLURALITY OF USHAPED TUBULAR UNITS, EACH UNIT HAVING TWO LEGS SECTIONS AND A SECTION INTERCONNECTING ONE END OF EACH OF SAID LEG SECTION, THE LEG SECTIONS OF ONE OF SAID UNITS TELESCOPING WITHIN A RESPECTIVE LEG SECTION OF TWO OTHER UNITS, AND THE LEG SECTIONS OF ANOTHER UNIT TELESCOPING WITHIN THE OTHER LEG SECTIONS OF SAID TWO OTHER UNITS, ONE OF SAID TWO OTHER UNITS AND SAID FIRST-MENTIONED UNIT BEING ADAPTED TO ROTATE ABOUT THE LEG-SECTIONS OF SAID OTHER UNITS TO FIRST FOLD SAID UNITS INTO SUBSTANTIALLY A SINGLE PLANE AND THEN TO CONTINUE SAID ROTATING TO FOLD SAID UNITS INTO TWO SUBSTANTIALLY PARALLEL PLANES, AND A FLEXIBLE FARBIC, SAID FABRIC BEING ATTACHED TO AND INTERCONNECTING SECTIONS OF TWO OF SAID TUBULAR UNITS, SAID FABRIC BEING ADAPTED TO SLIDE ALONG SAID INTERCONNECTING SECTIONS AND HAVING A LENGTH EXTENDING SAID FABRIC BEYOND ONE OF SAID INTERCONNECTING SECTIONS, AN ADDITIONAL PAIR OF TUBULAR UNITS BEING PROVIDED TOGETHER WITH MEANS FOR RIGIDLY INTERCONNECTING THE INTERCONNECTING SECTION OF SAID ADDITIONAL UNIT TO THE INTERCONNECTING SECTION OF ONE OF SAID FIRST-MEMTIONED UNITS, SAID FLEXIBLE FABRIC EXTENDING OVER THE OUTER INTERCONNECTING SECTIONS OF ALL OF SAID TUBULAR UNITS.