Importance

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Abstract

A method and assembly (10) to prevent the dripping of a liquid dispensing nozzle (100) after deactivation of the nozzle and to automatically deactivate the nozzle when it is removed from the fuel tank (150), is described. The non-drip valve assembly is attached to the dispensing end (104B) of the nozzle and includes a housing (12) within which is mounted a valve (14) comprised of a stopper (16) and a spring (18). When the nozzle is activated, the liquid pressure on the extreme end (16D) of the stopper moves the stopper out of the opening (12E) in the proximal end (12A) of the housing which allows the liquid to flow into the housing around the stopper and out through the apertures (12G) in the sidewall (12C) of the housing. When the nozzle is deactivated, the spring biases the stopper into the opening which prevents liquid remaining in the spout from escaping. A shut-off sleeve (112) is mounted around the spout of the nozzle and has a spring and ball plunger (116) and a locating detent (124). In use, the sleeve slides along the spout of the nozzle exposing the venturi opening (110) as the nozzle is inserted into a fuel tank. Once the nozzle is removed from the tank, the return spring (114) biases the sleeve back along the spout to cover the venturi opening and deactivate the nozzle.

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First Claim