| 摘要 |
An apparatus for sealing and pressurizing a bottle having an opening in a top end section and external threads extending around the end section includes an internal cap section having a bottom end with a bottom opening, a top end, and a generally cylindrical side wall located between the two ends. This cap section forms a chamber adapted to receive at least a portion of the top end section and has internal threads formed in this chamber and adapted for engaging the external threads in order to detachably mount the apparatus on the bottle. An annular compressing plate is mounted on the cap section so as to be movable upwardly or downwardly thereon. This compressing plate is non-rotatable relative to the cap section. A resilient, expandable and compressible bellows is located above the compressing plate and around the cap section. There is an exterior cover member that has a cylindrical side wall with interior threads in operative engagement with the edge of the plate. Rotation of the cover member to a sufficient extent causes the bellows to be compressed by upward movement of the plate.
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