Disinfectant dispensing devices for flush tanks

Claim 1

A DISINFECTANT DISPENSING DEVICE FOR WATER TANKS COMPRISING A RECEPTACLE ADAPTED TO CONTAIN A DISINFECTANT FLUID AND PROVIDED WITH AN OPENING IN THE BASE THEREOF, GUIDE MEANS COUPLED TO A SIDE OF SAID RECEPTACLE AND HAVING ALIGNED APERTURES, A FLOAT MECHANISM MOVABLE WITH RESPECT TO SAID RECEPTACLE AND OPERATIVELY ASSOCIATED WITH SAID GUIDE MEANS, SAID FLOAT MECHANISM HAVING A FLOAT ROD AND A FLOAT COUPLED TO SAID ROD AT ONE END THEREOF, SAID ROD BEING SLIDABLY MOUNTED IN SAID APERTURES FOR LINEAR RECIPROCATION, REPLACEABLE NOZZLE MEANS REMOVABLY ENGAGED WITH SAID BASE WITHIN SAID OPENING AND HAVING AN ORIFICE FOR DISCHARGE OF SAID FLUID FROM SAID RECEPTACLE, AND VALVE SEAT MEANS DISPOSED WHOLLY OUTSIDE SAID RECEPTACLE AND OPERATIVELY ASSOCIATED WITH SAID NOZZLE MEANS, BUT INDEPENDENT THEREOF, FOR OPENING AND CLOSING SAID ORIFICE, SAID VALVE SEAT MEANS BEING DIRECTLY, RIGIDLY AND FIXEDLY COUPLED SOLELY TO SAID FLOAT ROD AND MOVABLE THEREWITH INTO AND OUT OF SEALING ENGAGEMENT WITH SAID NOZZLE MEANS AT SAID ORIFICE, TO CLOSE SAID ORIFICE IN ONE DIRECTION OF LINEAR MOVEMENT OF SAID ROD WITHOUT ENTRY THEREINTO AND TO OPEN SAID ORIFICE IN THE OPPOSITE DIRECTION OF LINEAR MOVEMENT OF SAID ROD WITHOUT ALTERING THE ORIFICE AREA THEREOF.