| 摘要 |
To dispense quantities of pressurized liquid (e.g., carbonated beverage) from a container of the type having a ring near the base of the neck and a cap on the neck-without removing the cap. A fitting grips the ring. A hollow screw is threaded into the top of the fitting and is turned to seal against the cap in an annular area. A tube fits through the screw, pierces the cap inside the annular area and extends inside the container, the tube being sealed within the screw. A valve on the tube dispenses desired quantities of fluid. Where the cap is exceptionally tough, a lever may be used to force the tube downward to pierce the cap.
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