摘要 |
A cartridge for a compressible bottle containing a liquid. The cartridge comprises a housing attachable to the bottle and a collapsible bag. The housing and the bag together form an interior which contains a concentrate such as a drink mix. A transfer mechanism is provided whereby the liquid is pumped from the bottle into the cartridge by repeatedly compressing the bottle. As liquid is transferred into the cartridge, the bag expands within the bottle. In the preferred embodiment, the transfer mechanism is provided as part of the cartridge and the cartridge may be sized to fit a standard water bottle. In an alternate embodiment, the transfer mechanism is provided as part of a special bottle.
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