Ground cushion aircraft and control system

Claim 1

IN A GAS FLOW SYSTEM WHEREIN GAS IS CAUSED TO FLOW IN A TUBULAR CONDUIT AND TO PASS OUT OF SAID CONDUIT AS A RADIAL FLOW INTO AN ANNULAR PASSAGE, A VALVE WITHIN SAID CONDUIT COMPRISING A MEMBER MOVABLE RADIALLY OF SAID CONDUIT TO OBTURATE A PART OF SAID ANNULAR PASSAGE AND MOUNTING MEANS FOR SAID MEMBER FOR MOVING SAID MEMBER INDEPENDENTLY IN TWO DIRECTIONS AT RIGHT ANGLES RADIALLY OF SAID CONDUIT, SAID MOUNTING MEANS COMPRISING, A SUPPORTING BRACKET FOR RECEIVING SAID MEMBER FOR MOVEMENT IN ONE OF SAID TWO DIRECTIONS AT RIGHT ANGLES, POSITIVE ROTARY DRIVE MEANS ON SAID BRACKET FOR MOVING SAID MEMBER RELATIVELY TO SAID BRACKET IN ONE OF ITS TWO DIRECTIONS AT RIGHT ANGLES, MEANS MOUNTING SAID SUPPORTING BRACKET FOR MOVEMENT IN THE SECOND OF SAID TWO DIRECTIONS AT RIGHT ANGLES, AND CABLE MEANS FOR SAID POSITIVE DRIVE MEANS INCLUDING A PAIR OF ENDS, SAID POSITIVE DRIVE MEANS BEING ROTATABLE TO MOVE SAID MEMBER IN SAID ONE DIRECTION WHEN SAID CABLE IS MOVED LONGITUDINALLY BY MOVEMENT OF SAID ENDS IN OPPOSITE DIRECTIONS, AND FOR MOVING SAID SUPPORTING BRACKET IN SAID SECOND DIRECTION BY MOVEMENT OF SAID ENDS IN THE SAME DIRECTION.