Water Filter With Inwardly Sloping Top

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 filter having a cylindrical shaped lower portion and a frustoconical shaped upper portion;
• a filter cartridge for housing the filter comprising a top member coupled with a bottom member;
• wherein the top member has a substantially v-shaped cross section
• wherein at least one of the top member and the bottom member comprises an annular flange;
• and
• wherein the annular flange is coupled to the inner annular shoulder of the cap such that a liquid in the reservoir is filtered by the filter as the liquid is being consumed, and the filter is fluidly decoupled from the reservoir when the cap is disengaged from the reservoir.

A filter cartridge for housing a filter, comprising:

• a top member having an inwardly sloping exterior surface, a plurality of openings, a first flange, and a first recessed portion;
• a bottom member coupled to the top member and having a plurality of inlets and a second flange;
• a seal that covers at least a portion of each of the first and second flanges;
• wherein the top and bottom members couple with each other to form an enclosure sized and dimensioned to house the filter;
• and
• wherein the filter cartridge is configured to couple to a bottle opening.