Automatic shut-off nozzle for use in a non-overflow liquid delivery system

摘要

An automatic shut-off nozzle comprises a liquid delivery conduit and a liquid recovery conduit. A valve has a first movable valve portion 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 is reconfigurable between an operating configuration whereat force can be transmitted from 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 whereat force cannot be transmitted from the valve control mechanism to the valve. A liquid sensor has a rest state and an actuated state whereat the liquid sensor reconfigures the manually operable valve control mechanism from the operating configuration to the non-operating configuration.

主权项

1. A method of delivering liquid to a destination container and precluding overflow from the destination container while having liquid delivered thereto, said method comprising the steps of:
placing a liquid dispensing outlet of a manually operable nozzle in fluid delivery relation with respect to said destination destination container while having liquid delivery thereto, manually operable nozzle into said destination container, said fluid-receiving inlet thereby defining a fill level; permitting delivery of liquid from said liquid dispensing outlet into said destination container; before the liquid in said destination container reaches said fluid-receiving inlet: moving the received fluid past and around said sensor; when the liquid in said destination container reaches said fluid-receiving inlet: receiving liquid from said destination container into said fluid-receiving inlet; permitting recovery of liquid from said destination container; sensing the received liquid; and, precluding delivery of liquid in response to sensing the recovered liquid.