| 摘要 |
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 the destination container, comprises a liquid delivery conduit having a liquid-receiving inlet and a Iiquid-dispensing outlet interconnected one with the other in fluid communication by a liquid delivery through passage, 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 through passage, and having a sensor retaining portion, a valve having a first movable valve portion disposed in the liquid delivery conduit and movable between a valve closed position whereat liquid is precluded from being dispensed from the liquid-dispensing outlet of the liquid delivery conduit and a valve open position whereat liquid is permitted to be dispensed from the liquid-dispensing outlet of the liquid delivery conduit, a manually operable valve control mechanism reconfigurable between an operating configuration where force can be transmitted by the valve control mechanism to the valve to thereby move the first movable valve portion to the valve open position, and a non-operating configuration where force cannot be transmitted by the valve control mechanism to the valve, and a liquid sensor disposed within the sensor retaining portion of the liquid-recovery conduit, and having a rest state and an actuated state where the liquid sensor reconfigures the valve control mechanism from the operating configuration to the non-operating configuration, and where the liquid sensor is responsive to a threshold condition of liquid in the sensor retaining portion of the liquid recovery conduit, to thereby cause the liquid sensor be in the actuated state.
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