초록 ▼

This invention relates to an improved pouring spout of the type of ones which are detachably connected to a filling container for transferring liquid in a receiving container. These kind of pouring spout include an inlet tube for receiving liquid from the filling container, and an outlet tube telesc

This invention relates to an improved pouring spout of the type of ones which are detachably connected to a filling container for transferring liquid in a receiving container. These kind of pouring spout include an inlet tube for receiving liquid from the filling container, and an outlet tube telescopically mounted to slide onto the inlet tube for guiding liquid therefrom into the receiving container. The spout also comprises a liquid valve which opens and closes automatically upon sliding of the outlet tube. The current invention further comprises an air passage and an air valve for regulating an air flow inside the spout from the receiving container into the receiving container, such that the flow of liquid inside the spout stops automatically when the receiving container is full, thereby avoiding spillage of liquid. The pouring spout of the invention also resolve the problem of emanations related to the transfer of dangerous volatile and highly inflammable liquid.

대표청구항 ▼

[ What is claimed is:] [1.] In a non-spilling detachable pouring spout for transferring liquid from a filling container to a receiving container, said spout comprising:a) an inlet tube for receiving liquid from the filling container, said inlet tube having an inlet portion with an upstream end and a

[ What is claimed is:] [1.] In a non-spilling detachable pouring spout for transferring liquid from a filling container to a receiving container, said spout comprising:a) an inlet tube for receiving liquid from the filling container, said inlet tube having an inlet portion with an upstream end and a downstream end, a main portion with an upstream end and a downstream end, the downstream end of the inlet portion being adjacent to the upstream end of the main portion, the inlet portion being detachably connectable to the filling container;b) an outlet tube operatively coupled to said inlet tube for guiding liquid therefrom into the receiving container, said outlet tube having a collar-like portion with an upstream end and a downstream end and an outlet portion with an upstream end and a downstream end, the downstream end of the collar-like portion being adjacent to the upstream end of the outlet portion, the collar-like portion being devised to be telescopically slidable onto the main portion of the inlet tube, the outlet portion being devised to be inserted inside the receiving container;c) a liquid valve located inside the liquid passage, said liquid valve comprising:a valve head;means for connecting the valve head to the outlet tube, said connecting means comprising a perforated plate extending across the upstream end of the outlet portion of the outlet tube, and a pin having one end connected to a central portion of the perforated plate and another end connected to the valve head;a valve seat inside the inlet tube substantially at the downstream end of the main portion of the inlet tube; andbiasing means mounted between the perforated plate and the valve seat for biasing the valve head against the valve seat in a normally closed position;d) stop means responsive to an upward force, said stop means being operatively connected to the liquid valve for opening said liquid valve when an upward pressure is applied to the pouring spout and thus allowing transfer of liquid from the filling container to the receiving container; ande) air regulating means operatively connected to the liquid valve, said air regulating means allowing air to flow from outside the spout into the receiving container upon actuation of the liquid valve;the improvement wherein the air regulating means includes:an air passage extending inside the spout from the downstream end of the outlet tube up to the upstream end of the inlet tube, said passage providing an air flow entering from the downstream end of the outlet tube up into the filling container; andsealing means disposed around the main portion of the inlet tube and under the slidable collar-like of the outlet tube for coupling in a sealing manner said main portion and said slidable collar-like portion.