Two or more poppet valves are mechanically coupled or linked to each other by a web. A single valve stem operates the multiple poppets together. One poppet controls the flow of a liquid from a reservoir. The other poppet controls the flow of air into the reservoir. The air control poppet opens after
Two or more poppet valves are mechanically coupled or linked to each other by a web. A single valve stem operates the multiple poppets together. One poppet controls the flow of a liquid from a reservoir. The other poppet controls the flow of air into the reservoir. The air control poppet opens after the liquid control poppet enabling a vacuum to be developed in the reservoir before the air control poppet opens. Air is thus drawn into the reservoir through the air control poppet.
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1. A linked poppet valve having a single stem, which operates multiple poppets, each poppet controlling the flow of a corresponding fluid, the linked poppet valve comprising: a liquid control valve and an air control valve, operatively linked to each other, the liquid and air control valves being la
1. A linked poppet valve having a single stem, which operates multiple poppets, each poppet controlling the flow of a corresponding fluid, the linked poppet valve comprising: a liquid control valve and an air control valve, operatively linked to each other, the liquid and air control valves being laterally separated from and coupled to each other such that both valves move at the same time, in the same direction and the same distance, responsive to displacement of a valve stem coupled to one of the liquid and air control valves;wherein the liquid control valve comprises a liquid sealing surface that alternately makes contact with and separates from a corresponding liquid control valve seat responsive to displacement of the stem in corresponding opposite directions;wherein the air control valve comprises an air sealing surface, configured to extend into a tapered air control chamber and alternately make contact with and separate from at least one interior surface of the tapered air control chamber responsive to displacement of the stem in said corresponding opposite directions, the tapered air control chamber having first and second ends, a length and a cross sectional shape between the ends, which changes between the first and second ends; andwherein the air sealing surface and the length and taper of the tapered air control chamber are selected such that, when the stem moves in a first direction, the liquid sealing surface separates from the liquid control valve seat before the air sealing surface separates from the at least one interior surface of the tapered air control chamber, and when the stem moves in an opposite second direction, the air sealing surface makes contact with the at least one interior surface of the tapered air control chamber before the liquid sealing surface makes contact with the liquid control valve seat. 2. The linked poppet valve of claim 1, further comprising a flow path separator between the liquid control valve the air control valve. 3. The linked poppet valve of claim 1, wherein the flow path separator comprises a substantially rectangular panel, sized, shaped and arranged to cover a slot formed in a fluid-carrying conduit. 4. The linked poppet valve of claim 1, wherein the substantially rectangular panel is substantially convex. 5. The linked poppet valve of claim 1, further comprising a web coupled to both the liquid control valve and the air control valve, the web spatially separating the control valves from each other. 6. The linked poppet valve of claim 1, wherein the single stem extends from one of the first and second control valves. 7. The linked poppet valve of claim 3, wherein the single stem extends from the web. 8. The linked poppet valve of claim 1, wherein the liquid sealing surface comprises an O-ring in an O-ring groove formed in an exterior surface of the liquid control valve. 9. The linked poppet valve of claim 1, wherein the air sealing surface comprises an O-ring in an O-ring groove, the O-ring groove for the air sealing surface being formed in an exterior surface of an elongated plug. 10. The linked poppet valve of claim 9, wherein the elongated plug is substantially cylindrical and wherein the tapered air control chamber is a cylinder having a taper. 11. The linked poppet valve of claim 1, wherein the liquid sealing surface comprises a pliable material over-molded a non-pliable material. 12. The linked poppet valve of claim 1, wherein the air sealing surface comprises a pliable material over-molded a non-pliable material. 13. The linked poppet valve of claim 1, wherein at least one of the air and liquid sealing surfaces comprise first and second mating surfaces, lapped to each other. 14. A linked poppet valve having a single stem coupled to a plurality of poppets, each poppet controlling the flow of a corresponding fluid, the linked poppet valve comprising: a first poppet comprising: first and second opposing ends, at least one of which is tapered,a first major axis extending between the first and second ends, anda liquid sealing interface proximate the first end;a second poppet comprising: first and second opposing ends, anda second major axis extending between the first and second ends, the second major axis being substantially co-planar with and substantially parallel to the first axis and being separated from the first major axis by a predetermined distance,the second poppet also comprising a gas sealing interface proximate its first end;a web having first and second opposing ends and a length corresponding to the distance between said first and second web ends, the web's first end being coupled to the first poppet, the web's second end being coupled to the second poppet, the web mechanically linking the first and second poppets to each other;a stem having first and second ends and an axis substantially parallel to one of the first and second major axes, the first end of the stem being coupled to the first end of the first poppet, the second end of the stem being distal to the first end;wherein linear displacement of the stem in a first direction causes both poppets to be linearly displaced at the same time, the same distance and in the same direction, the liquid sealing interface separating from a mating interface surface for the liquid sealing surface before the gas sealing interface separates from a mating gas sealing interface surface;wherein linear displacement of the stem in an opposite second direction causes both poppets to be linearly displaced at the same time, the same distance and in the same direction, the gas sealing surface engaging the mating gas sealing interface surface before the liquid sealing interface engages the mating interface for the liquid sealing interface. 15. The linked poppet valve of claim 14, wherein the web further comprises a flow path separator located between the first and second poppets. 16. The linked poppet valve of claim 15, wherein the flow path separator comprises a substantially rectangular and planar plate, having a length dimension that extends away from the web in both directions parallel to the axes of the poppets. 17. The linked poppet valve of claim 14, wherein the first and second poppets, the web, the flow path separator and the stem are a single, unitary structure. 18. The linked poppet valve of claim 14, wherein the liquid sealing surface comprises an O-ring in an O-ring groove located on the first poppet such that the O-ring groove lies substantially on a first geometric plane, which is substantially orthogonal to the first major central axis. 19. The linked poppet valve of claim 14, wherein the gas sealing interface comprises an O-ring in an O-ring groove located on the second poppet such that the second O-ring groove lies on a second geometric plane, substantially orthogonal to the second major axis, the first and second geometric planes being substantially parallel to, and spaced apart from each other. 20. The linked poppet valve of claim 14, wherein the liquid sealing surface comprises a first O-ring in a first O-ring groove located on the first poppet such that the first O-ring groove lies substantially on a first geometric plane, substantially orthogonal to the first major central axis, and wherein the gas sealing interface comprises a second O-ring in a second O-ring groove located on the second poppet such that the second O-ring groove lies on a second geometric plane, substantially orthogonal to the second major axis and which is substantially parallel to the first geometric plane, the first and second geometric planes being separated from each other by a predetermined O-ring groove separation distance, the O-ring groove separation distance determining a distance that the second poppet travels before an O-ring in the second O-ring groove separates from a tapered cylinder comprising the mating gas sealing interface surface. 21. A spout for a liquid container, the spout enabling an air to flow into the liquid container at a rate that is at least substantially equal to the rate at which liquid flows out of the container, the spout comprising: a first poppet comprising a substantially prolate-spheroid-shaped body having first and second opposing ends and a major axis extending between the opposing ends, the first end facing toward the liquid container, the second end facing toward a liquid outlet of the spout;a stem having a central axis substantially parallel with the major axis of the substantially prolate-spheroid-shaped body, the stem being coupled to the first end of the substantially prolate-spheroid-shaped body first poppet and having an opposite, distal end configured to engage a poppet actuator;a first O-ring groove located proximate the first end of the substantially prolate-spheroid-shaped body;an O-ring located substantially in the first O-ring groove;a first interface surface, configured to engage the O-ring in the first O-ring groove when the first poppet is in a closed position;a second poppet having a first cross sectional shape, a central axis that is substantially co-planar with, and substantially parallel to the major axis of the substantially prolate-spheroid-shaped body, as well as the central axis of the stem, the second poppet having a first end facing an air flow control chamber and the liquid container and having a second end facing an air supply conduit;an air flow control chamber having first and second open and opposing ends and an open interior having a second cross sectional shape that is substantially similar to the first cross sectional shape of the second poppet, the first end of the air flow control chamber facing the liquid container, the second end of the air chamber facing toward the first end of second poppet and receiving the second poppet therein, said second end of the air flow control chamber being sized, shaped and arranged to allow the first end of the second poppet to move back and forth in the air flow control chamber, the cross sectional shapes of the air flow control chamber at the first and second ends differing in size but not differing substantially in their shapes such that the air flow control chamber tapers inwardly from the second end toward the first end, the inward taper closing the air flow control chamber responsive to movement of the first poppet toward the first end of the air flow control chamber;a web, having a width, first and second opposing ends, the first end of the web merging into the substantially prolate-spheroid-shaped body, the second end of the web merging into the second poppet;wherein the poppets are in a closed position when the stem is in a first position at which the O-ring in the first O-ring groove is in contact with the first interface surface and the first end of the second poppet is inside the air flow control chamber contacting the tapered interior surface thereby blocking air flow, when the stem is translated away from the first position to a second position, stem translation moves both poppets the same distance, in the same direction, however, the O-ring of the first poppet separates from the first interface surface before second poppet separates from the tapered interior surface thereby allowing liquid to flow past the O-ring and first interface surface before air flows through the air chamber. 22. The spout for a liquid container of claim 21, wherein the web further comprises a flow path separator between the first and second poppets. 23. The spout for a liquid fuel container of claim 22, wherein the web further comprises a substantially rectangular and planar plate having a length dimension that extends away from the web in opposite directions. 24. The spout for a liquid container of claim 21, wherein the cross sectional shapes of the second poppet and the air flow control chamber are substantially cylindrical. 25. The spout for a liquid container of claim 21, wherein the first end of the second poppet comprises a second O-ring groove and an O-ring. 26. The spout for a liquid container of claim 21, wherein the cross sectional shapes of the second poppet and the air flow control chamber are substantially rectangular. 27. The spout for a liquid container of claim 21, wherein the central axis of the second poppet is radially offset from the major axis of the first poppet. 28. The spout for a liquid container of claim 21, wherein the first and second poppets, the web, the flow path separator and the stem are a single, unitary structure. 29. The spout for a liquid container of claim 21, wherein at least one of the first and second ends of the substantially prolate-spheroid-shaped body is truncated. 30. The spout for a sealed liquid container of claim 21, wherein the major axis of the substantially prolate-spheroid-shaped body is substantially parallel to the flow of fluid leaving the container.
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