Vacuum cleaner

Claim 1

IN AN UPRIGHT VACUUM CLEANER HAVING A NOZZLE STRUCTURE ADAPTED TO MOVE OVER A SURFACE BEING CLEANED IN COMBINATION, A PAIR OF LONGITUDINAL WALL MEMBERS AND A PAIR OF TRANSVERSE WALL MEMBERS COOPERATING TO FORM A SUCTION INLET, A NOZZLE GUARD HAVING A PAIR OF LONGITUDINAL FRAME MEMBERS AND A PAIR OF TRANSVERSE FRAME MEMBERS, SAID FRAME MEMBERS EACH COMPRISING A VERTICAL PORTION AND A HORIZONTAL PORTION AND COOPERATING TO FORM A SUBSTANTIALLY BOX-LIKE STRUCTURE HAVING A CONTINUOUS TOP SURFACE AT THE FREE ENDS OF SAID VERTICAL PORTIONS, A SEALING GASKET POSITIONED BETWEEN THE FREE ENDS OF SAID WALL MEMBERS AND SAID CONTINUOUS TOP SURFACE, EXTENSIBLE MEANS INCLUDING A HOOK FOR SECURING ONE OF SAID LONGITUDINAL MEMBERS TO AN ADJACENT LONGITUDINAL FRAME MEMBER TO FORM A HINGE BETWEEN SAID NOZZLE GUARD AND SAID NOZZLE STRUCTURE, ROTATABLE MEANS SECURED TO THE NOZZLE STRUCTURE ADJACENT THE OTHER OF SAID LONGITUDINAL WALL MEMBERS AND ADAPTED TO EXERT PRESSURE ON THE OTHER OF SAID LONGITUDINAL FRAME MEMBERS WHILE SIMULTANEOUSLY EXTENDING SAID EXTENSIBLE MEANS, WHEREBY SEALING BETWEEN THE FREE ENDS OF SAID WALLS AND THE SEALING GASKET AND BETWEEN SAID TOP SURFACE AND SAID SEALING GASKET IS EFFECTED.