Back-flow preventing bag valve for bag-in-box container
AssigneeThe Coca-Cola Company
InventorsSimon J. Richter, Kevin J. Totten, William S. Credle, Jr., Thomas R. Boston
Life of this patent
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Abstract
A bag valve coupling member for a soft drink syrup bag-in-box container having a back-flow preventing one-way valve therein, preferably in addition to the standard self-sealing poppet valve that is biased closed and that is opened when a hose connector coupling member is attached to the bag valve coupling member. The one-way valve prevents back-filling (reuse) of the bag and syrup substitution.
Claims10
A bag valve coupling member for a collapsible bag of a bag-in-box container comprising:
- (a) a housing having an inner end and an outer end and having a liquid passageway extending therethrough for dispensing liquid flow therethrough in the direction from said inner to said outer end:
- (b) a first self-sealing valve having closed and open positions and being disposed in said passageway and including a first valve seat, a first valve member movable into and out of sealing contact with said first valve seat biasing means for biasing said first valve member into sealing contact with said first valve seat, and a movable actuating stem connected to said valve member and extending toward said outer end of said housing for causing said first valve to move to its open position when said stem is caused to move;
- (c) a back-flow preventing one-way valve disposed in said passageway for preventing reverse liquid flow through said passageway in the direction from said outer end to said inner end, said one-way valve including a second valve seat and a second valve member being movable toward and into sealing contact with said second valve seat by reverse liquid flow through said passageway closings aid passageway, and being movable away from and out of contact with said second valve seat by dispensing liquid flow through said passageway, opening said passageway;
- and
- (d) wherein said housing is cylindrical and said inner end of said housing includes a flat, circular wall perpendicular to the axis of said passageway, said wall including a plurality of equally spaced-apart circular openings in a circular array, and said second valve member being ring-shaped.
The coupling member as recited in claim I including a one-way valve chamber located between said first valve and said inner end of said housing, said one-way valve being located in said chamber, said first valve member moving into said chamber and toward said second valve member when moving out of contact with said first valve seat, and said second valve member moving into said chamber and toward said first valve member when moving away from said second valve seat.
Dependencies are inferred from the claim text.