Patent ID: 8337697

Claim:
A bottle, comprising: a cap having a dispensing portion, internal threading, and an inner ring having an inner annular shoulder; a reservoir having an open top and external threading that mates with the internal threading; a carbon filter block having a cylindrical shaped lower portion and a frustoconical shaped upper portion; a filter holder for housing the carbon filter block comprising a frustoconical tubular shaped top portion coupled with a lower portion, the filter holder being coupled to the cap such that a liquid in the reservoir is filtered by the filter block as the liquid is being consumed, and the filter is fluidly decoupled from the reservoir when the cap is disengaged from the reservoir; wherein the top portion comprises a pressure equalization valve; wherein the frustoconical shaped top portion includes (i) a disc-shaped surface for enclosing the frustoconical shaped upper portion of the filter block and (ii) a frustoconical ring shaped surface with a plurality of vents extending therethrough adjacent an exterior surface of the upper portion of the filter block; an annular flange extending radially outward from an upper portion of the outer imperforate tubular wall, wherein the annular flange is disposed between an upper rim of the open top of the reservoir and the inner annular shoulder of the cap; wherein the lower portion of the filter holder includes an inner tubular wall with a plurality of vents extending therethrough and having a shape that conforms with an inner surface of the cylindrical shaped lower portion and frustoconical shaped upper portion of the filter block; wherein the imperforate tubular wall of the filter holder is disposed within the open top of the reservoir; and wherein the upper portion of the filter holder is disposed within the cap.