초록 ▼

An orally usable filter straw for the purification of water by forced movement of the water through the straw. The straw includes an elongated tubular conduit having an inlet for reception of the water at a distal end of the conduit and having an outlet at a proximal end of the conduit for expulsion

An orally usable filter straw for the purification of water by forced movement of the water through the straw. The straw includes an elongated tubular conduit having an inlet for reception of the water at a distal end of the conduit and having an outlet at a proximal end of the conduit for expulsion of the treated water. Beginning at the inlet of the straw, the straw includes the following materials retained within the conduit: a removably mounted filter, a purification resin, activated carbon granules, and a bactericide resin. A mouthpiece is mounted at the outlet of the conduit to allow the device to be suitably received by a human user. The straw includes a series of porous spacers positioned within the conduit to segregate the materials retained within the straw.

대표청구항 ▼

An orally usable filter straw for the purification of water by forced movement of water through the straw including: an elongated tubular passageway having an inlet at a distal end thereof and an outlet at a proximal end thereof, with the following materials retained within the passageway: an inlet

An orally usable filter straw for the purification of water by forced movement of water through the straw including: an elongated tubular passageway having an inlet at a distal end thereof and an outlet at a proximal end thereof, with the following materials retained within the passageway: an inlet filter removably mounted at the inlet of the passageway, the filter being retained within the passageway by a retention ring surrounding the filter and of size to frictionally engage in inner surface of the passageway; a first porous spacer of a plurality of porous spacers positioned within the passageway, the first porous spacer proximally adjacent to the retention ring, the porous spacers having a pore size larger than the filter pore size; a purification material proximal to the first porous spacer filling the passageway between the first spacer and a second porous spacer proximally adjacent to the purification material; a first resilient foam layer of a pair of resilient foam layers, the first foam layer proximally adjacent to the second porous spacer; activated carbon material proximal to the first foam layer filling the passageway between the first foam layer and a second foam layer proximally adjacent to the carbon material, the foam layers exerting a small compression force on the activated carbon and permitting the carbon particles to expand; a third porous spacer proximally adjacent to the second foam layer; a bactericide material proximal to the third porous spacer filling the passageway between the third porous spacer and a fourth porous spacer proximally adjacent to the bactericide material; and a tubular mouthpiece mounted at the outlet of the passageway.