초록 ▼

A non-overflow liquid delivery system comprises a pumping apparatus having a liquid delivery pumping portion and a liquid recovery pumping portion fluidically isolated one from the other. A nozzle has a liquid delivery conduit and a liquid recovery conduit. A liquid delivery hose connects the liquid

A non-overflow liquid delivery system comprises a pumping apparatus having a liquid delivery pumping portion and a liquid recovery pumping portion fluidically isolated one from the other. A nozzle has a liquid delivery conduit and a liquid recovery conduit. A liquid delivery hose connects the liquid delivery pumping portion of the pumping apparatus in fluid communication with the liquid delivery conduit. A liquid recovery hose connects the liquid recovery pumping portion of the pumping apparatus in fluid communication with the liquid recovery conduit. A valve has a first movable valve portion for opening and closing the liquid delivery conduit. A manually operable valve control mechanism is connected to the valve for controlling the first movable valve portion, and has a liquid sensor responsive to a threshold condition of liquid in the liquid recovery conduit to thereby cause the first movable valve portion to close the liquid delivery conduit.

대표청구항 ▼

1. A non-overflow liquid delivery system for delivering liquid into a destination container, and recovering excess liquid from said destination container, said non-overflow liquid delivery system comprising: a pumping apparatus having a liquid delivery pumping portion and a liquid recovery pumping p

1. A non-overflow liquid delivery system for delivering liquid into a destination container, and recovering excess liquid from said destination container, said non-overflow liquid delivery system comprising: a pumping apparatus having a liquid delivery pumping portion and a liquid recovery pumping portion fluidically isolated one from the other;a nozzle having a liquid delivery conduit and a liquid recovery conduit;a liquid delivery hose connecting said liquid delivery pumping portion of said pumping apparatus in fluid communication with said liquid delivery conduit;a liquid recovery hose connecting said liquid recovery pumping portion of said pumping apparatus in fluid communication with said liquid recovery conduit;a valve having a first movable valve portion for opening and closing said liquid delivery conduit; and,a manually operable valve control mechanism connected to said valve for controlling said first movable valve portion, and having a liquid sensor responsive to a threshold condition of liquid in said liquid recovery conduit to thereby cause said first movable valve portion to close said liquid delivery conduit. 2. The non-overflow liquid delivery system of claim 1, wherein said liquid sensor comprises a piston slidably mounted in a sensor retaining portion of said liquid recovery conduit. 3. The non-overflow liquid delivery system of claim 2, wherein the cross-sectional area separating said piston of said liquid sensor and said liquid recovery conduit is of a size between the minimum cross-section area of said liquid recovery conduit and the predominant cross-sectional area of the liquid delivery throughpassage of said liquid recovery conduit. 4. A non-overflow liquid delivery system for delivering liquid into a destination container, and recovering excess liquid from said destination container, said non-overflow liquid delivery system comprising: a pumping apparatus having a liquid delivery pumping portion and a liquid recovery pumping portion fluidically isolated one from the other;a nozzle having a liquid delivery conduit and a liquid recovery conduit;a liquid delivery hose connecting said liquid delivery pumping portion of said pumping apparatus in fluid communication with said liquid delivery conduit;a liquid recovery hose connecting said liquid recovery pumping portion of said pumping apparatus in fluid communication with said liquid recovery conduit; and,a valve having a first movable valve portion for opening and closing said liquid delivery conduit, and a second movable valve portion for opening and closing said liquid recovery conduit;wherein said first movable valve portion and said second movable valve portion are interconnected one to the other for co-operative movement one with the other. 5. The non-overflow liquid delivery system of claim 4, wherein said first movable valve portion and said second movable valve portion are interconnected one with the other for concurrent movement one with the other. 6. The non-overflow liquid delivery system of claim 5, wherein said first movable valve portion and said second movable valve portion are integrally formed one with the other for concurrent movement one with the other. 7. The non-overflow liquid delivery system of claim 6, wherein said first movable valve portion is disposed adjacent the liquid-dispensing outlet of said liquid delivery conduit, and said second movable valve portion is disposed adjacent the liquid-receiving inlet of said liquid recovery conduit.