Patent ID: 8474492

Claim:
An automatic shut off nozzle for use in a non overflow liquid delivery system for delivering liquid into a destination container, and recovering excess liquid from said destination container, said automatic shut off nozzle comprising: a liquid delivery conduit having a liquid receiving inlet and a liquid dispensing outlet interconnected one with the other in fluid communication by a liquid delivery throughpassage; a liquid recovery conduit having a liquid receiving inlet and a liquid conveying outlet interconnected one with the other in fluid communication by a liquid recovery throughpassage, and having a sensor retaining portion; a valve having a first movable valve portion disposed in said liquid delivery conduit and movable between a valve closed position whereat liquid is precluded from being dispensed from said liquid dispensing outlet of said liquid delivery conduit and a valve open position whereat liquid is permitted to be dispensed from said liquid dispensing outlet of said liquid delivery conduit; a manually operable valve control mechanism reconfigurable between an operating configuration whereat force can be transmitted by said valve control mechanism to said valve to thereby move said first movable valve portion to said valve open position, and a non operating configuration whereat force cannot be transmitted by said valve control mechanism to said valve; and, a liquid sensor disposed within said sensor retaining portion of said liquid recovery conduit, and having a rest state and an actuated state whereat said liquid sensor reconfigures said valve control mechanism from said operating configuration to said non operating configuration, wherein said liquid sensor is responsive to a threshold condition of liquid in said sensor retaining portion of said liquid recovery conduit, to thereby cause said liquid sensor to be in said actuated state.