Single handle control valve for cold and hot water or a mixture thereof

Claim 1

A MIXING VALVE FOR COLD AND HOT WATER HAVING A SINGLE VALVE OPERATING HANDLE, A VALVE HOUSING FORMING A FIRST VALVE SEAT AT ITS INNER END, A HOLLOW HANDLE SHAFT JOURNALLED IN SAID VALVE HOUSING AND HAVING A CONICAL END EXTENDING INTO PROXIMITY OF SAID FIRST VALVE SEAT, INLET CANALS FOR COLD AND HOT WATER IN SAID VALVE HOUSING AND HAVING OUTLET OPENINGS IN SAID FIRST VALVE SEAT, A SEALING DISC LODGED IN SAID FIRST VALVE SEAT AND HAVING APERTURES REGISTERING WITH THE OUTLET OPENINGS IN SAID FIRST VALVE SEAT, AN INSERT MEMBER DISPOSED IN THE INNER END OF SAID HANDLE SHAFT, SAID INSERT MEMBER HAVING A LOWER CONICAL END JOURNALLED IN THE CONICAL END OF SAID HANDLE SHAFT, A DISCHARGE OPENING IN THE CONICAL END OF SAID HANDLE SHAFT, A CORRESPONDING RECESS IN THE CONICAL END OF SAID INSERT MEMBER, SAID HOLLOW HANDLE SHAFT CONSTITUTING A MIXING CHAMBER, A PASSAGEWAY BETWEEN THE INNER WALL OF SAID HOLLOW HANDLE SHAFT AND SAID INSERT MEMBER TO PROVIDE A PASSAGE FROM SAID MIXING CHAMBER TO SAID DISCHARGE OPENING, SLIDE MEANS AT THE CONICAL END OF SAID INSERT MEMBER AND HAVING PASSAGEWAYS FOR COMMUNICATING WITH THE APERTURES IN SAID SEALING DISC, SAID INSERT MEMBER HAVING AN UPPER TUBULAR EXTENSION PROJECTING INTO SAID MIXING CHAMBER AND FORMING A SECOND VALVE SEAT AT ITS UPPER END, SAID INSERT MEMBER HAVING AXIALLY DIRECTED FLOW CANALS PROVIDED WITH INLET OPENINGS IN ITS CONICAL END FOR COMMUNICATION WITH SAID PASSAGEWAYS IN SAID SLIDE MEANS AND WITH OUTLET OPENINGS IN SAID SECOND VALVE SEAT, GRIPPING MEANS ON THE INNER WALL OF SAID HOLLOW HANDLE SHAFT FOR ENGAGING SAID TUBULAR EXTENSION AND ADAPTED TO TRANSMIT THE MOVEMENT OF SAID HANDLE SHAFT TO SAID INSERT MEMBER, AND A HANDLE KNOB ROTATABLY MOUNTED ON SAID OPERATING HANDLE, SAID HANDLE KNOB HAVING A VALVE CONE FIXED TO ITS INNER END PROJECTING INTO SAID MIXING CHAMBER, SAID VALVE CONE BEING MOVABLE RELATIVE TO SAID SECOND VALVE SEAT UPON ROTATION OF SAID HANDLE KNOB TO CONTROL THE FLOW OF WATER THROUGH SAID DISCHARGE OPENING.