Projection screen

Claim 1

A PROJECTION SCREEN STRUCTURE OF THE CHARACTER DESCRIBED ADAPTED TO BE SUPPORTED IN USE POSITION BY COMPRESSIVE ENGAGEMENT OF PORTIONS OF SAID STRUCTURE BETWEEN TWO SPACED STATIONARY SUBSTASNTIALLY PARALLEL CONFRONTING SURFACES COMPRISING: A FIRST ELONGATED POLE-LIKE MEMBER INCLUDING SUBSTANTIALLY COAXIAL PAD-INCLUDING ELEMENTS AT EACH END AND AN ELONGATED TUBULAR HUSING WITH CLOSED ENDS INTERMEDIATE THE ENDS FOR SAID MEMBER, SPACED SOCKETFORMING MEANS OF LESSER CROSS-SECTIONAL AREA THAN SAID HOUSING ATTACHED TO EACH END OF SAID HOUSING, SAID SOCKETFORMING MEANS EACH EXTENDING AWAY FROM SAID HOUSING IN OPPOSITE DIRECTIONS COAXIAL WITH SAID ELEMENTS, FIRST MEANS HAVING ONE END ATTACHED TO ONE OF SAID ELEMENTS AND ANOTHER END INSERTED WITHIN ONE OF SAID SOCKET-FORMING MEANS FOR JOINING SAID ONE ELEMENT TO SAID ONE POCKETFORMING MEANS, SECOND MEANS HAVING ONE END ATTACHED TO THE OTHER OF SAID ELEMENTS AND ANOTHER END INSERTED WITHIN THE OTHER OF SAID SOCKET-FORMING MEANS FOR JOINING SAID OTHER ELEMENT TO SAID OTHER SOCKET-FORMING MEANS, AT LEAST ONE OF SAID JOINING MEANS AND ITS ASSOCIATED SOCKETFORMING MEANS INCLUDING MEANS FOR ALTERING THE OVERALL LENGTH OF SAID FIRST MEMBER; A FLEXIBLE SUBSTANTIALLY RECTANGULAR WEB, ONE END OF SAID WEB EXTENDING THROUGH A SLOT IN SAID HOUSING AND ATTACHED TO A STORAGE ROLLER LOCATED THEREIN, SPRING-INCLUDING MEANS ROTATABLY MOUNTING SAID ROLLER WITHIN SAID HOUSING AND PROVIDING FOR SPRING RETRACTION OF A PORTION OF SAID WEB INTO SAID HOUSING AND AROUND SAID ROLLER SUBSEQUENT TO EXTRACTION OF SAID WEB PORTION OUT OF SAID HOUSING AND OFF OF SAID ROLLER, A SECOND ELONGATED POLE-LIKE MEMBER INCLUDING SUBSTANTIALLY COAXIAL PAD-INCLUDING ELEMENTS AT EACH END AND AN ELONGATED INTERMEDIATE TUBULAR SECTION TO WHICH THE END OF SAID WEB OPPOSITE SAID ONE END IS ATTACHED, SPACED HOLLOW MEMBERS EACH HAVING A PORTION LOCATED WITHIN SAID TUBULAR SECTION AND EXTENDING FROM EACH END OF SAID TUBULAR SECTION IN COAXIAL ALIGNMENT WITH THE ELEMENTS ON SAID SECOND POLE-LIKE MEMBER, THIRD MEANS HAVING ONE END ATTACHED TO ONE OF SAID ELEMENTS ON SAID SECOND POLELIKE MEMBER AND ANOTHER END INSERTED WITHIN ONE OF SAID HOLLOW MEMBERS FOR JOINING SAID ONE ELEMENT ON SAID SECOND POLE-LIKE MEMBER TO SAID ONE HOLLOW MEMBER, FOURTH MEANS HAVING ONE END ATTACHED TO THE OTHER OF SAID ELEMENTS ON SAID SECOND POLE-LIKE MEMBER AND ANOTHER END INSERTED WITHIN THE OTHER OF SAID HOLLOW MEMBERS FOR JOINING SAID OTHER ELEMENT ON SAID SECOND POLE-LIKE MEMBER TO SAID OTHER HOLLOW MEMBER, BIASING SPRING MEANS LOCATED WITHIN SAID TUBULAR SECTION AND ENGAGING AT LEAST ONE OF SAID LAST-MENTIONED HOLLOW MEMBERS FOR URGING SAID LAST-MENTIONED HOLLOW MEMBER OUTWARDLY OF SAID TUBULAR SECTION, AND STOP MEANS ON THE HOLLOW MEMBER WHICH IS ENGAGED BY SAID BIASING SPRING MEANS FOR PREVENTING SAID LAST-MENTIONED HOLLOW MEMBER FROM BEING URGED COMPLETELY OUT OF SAID TUBULAR SECTION.