Tilting valve with floating link operator

Claim 1

A VALVE AND ACTUATING LINKAGE INCLUDING: MEANS PROVIDING A SEAT OPENING FOR THE PASSAGE OF FLUID THERETHROUGH, A VALVE ELEMENT HAVING, (A) A ROUND FLAT BASE FITTING OVER THE SEAT OPENING AND ADAPTED TO BE TILTED ABOUT ANY POINT ON ITS ROUND EDGE IN FUNCTION TO VARY THE RESTRICTION OF THE SEAT OPENING, (B) AND A PROTUBERANCE EXTENDING FROM THE MIDDLE OF THE BASE AND WITH AN AXIS AT RIGHT ANGLES TO THE PLANE OF THE BASE; A LINK MEMBER AXIALLY ALIGNED WITH THE PROTUBERANCE AND WITH AN AXIALLY HOLE JOURNALLED OVER THE PROTUBERANCE AND ADAPTED TO MOVE AXIALLY AND PIVOT TO AXIALLY MISALIGN WITH THE VALVE ELEMENT TO EXERT A TRANSVERSE FORCE ON THE PROTUBERANCE WITH THE WALL OF THE HOLE TO TILT THE BASE ABOUT A POINT ON ITS ROUND EDGE TO MOVE THE VALVE ELEMENT FROM ITS FULLY SEATED POSITION OVER THE SEAT OPENING TO A POSITION WHICH WILL RESTRICT THE SEAT OPENING, AND A BASE MEMBER ADJUSTABLE ALONG A LINE PARALLEL WITH THE VALVE ELEMENT AND LINK MEMBER IN PROVIDING A PIVOT POINT FOR THE LINK MEMBER WHICH VARIES THE POSITION OF THE PIVOT POINT ABOUT WHICH THE LINK MEMBER IS MISALIGNED WITH THE VALVE ELEMENT PROTUBERANCE.