Toilet tank filling valve mechanism

Claim 1

A TOILET TANK FILLING VALVE SYSTEM COMPRISING (A) VALVE INLET MEANS FOR CONNECTION TO A WATER SOURCE, (B) VALVE OUTLET MEANS COMMUNICATING WITH THE INTERIOR OF SAID TANK, (C) A VALVE INTERPOSED BETWEEN SAID INLET AND OUTLET MEAND AND ACTUABLE TO CONTROL THE FLOW OF WATER FROM SAID INLET MEANS TO SAID OUTLET MEANS, (D) LINKAGE MEANS CONNECTED TO SAID VALVE TO ACTUATE IT, (E) VALVE CLOSING MEANS NORMALLY URGING SAID VALVE AND SAID LINKAGE MEANS TOWARD A FIRST POSITION IN WHICH SAID VALVE IS CLOSED, (F) MEANS FOR CONNECTING TO SAID LINKAGE MEANS A HANDLE ARRANGED TO FLUSH SAID TOILET, SAID CONNECTING MEANS BEING SO ARRANGED THAT MOVEMENT OF SAID HANDLE TO FLUSH SAID TOILET MOVES THE SAID VALVE AND SAID LINKAGE MEANS FROM SAID FIRST POSITION TO A SECOND POSITION IN WHICH SAID VALVE IS OPEN, THEREBY INITIATING THE FILLING OF SAID TANK, (G) DETENT MEANS FOR HOLDING SAID VALVE AND SAID LINKAGE MEANS IN SAID SECOND POSITION, (H) CONDUIT MEANS HAVING (1) A FIRST END DISPOSED AT THE DESIRED LEVEL OF THE THE WATER IN SAID TANK, (2) A SECOND END CONNECTED IN A VENTURI ARRANGEMENT BETWEEN SAID VALVE AND SAID OUTLET MEANS, THEREBY TO DRAW AIR FROM SAID CONDUIT MEANS WHEN SAID VALVE IS OPEN AND WATER FLOWS TO SAID OUTLET MEANS AND TO REDUCE THE PRESSURE IN SAID CONDUIT MEANS WHEN SAID WATER LEVEL IS ABOVE SAID FIRST END OF SAID CONDUIT MEANS, (I) A PRESSURE RESPONSIVE ELEMENT RESPONSIVE T THE PRESSURE IN SAID CONDUIT MEAND AND CONNECTED TO SAID DETENT MEANS TO RELEASE SAID DETENT MEANS WHEN THE PRESSURE IN SAID CONDUIT MEANS DROPS AS A RESULT OF THE RISE OF SAID WATER LEVEL ABOVE SAID FIRST END, THEREBY PERMITTING SAID VALVE CLOSING MEANS TO CLOSE SAID VALVE.