Bottle filter cap

A container for dispensing filtered water, comprising:

• a plastic bottle having an open neck with an inside diameter of about 50 mm or less, and with a cap engaging portion;
• a plastic cap having a bottle neck engaging portion, said cap and neck engaging portions cooperating to releasably hold said cap on said neck, said cap having first and second substantially opposite surfaces;
• a self-supporting, self-venting tube of or containing filtering material capable of reducing the level of chlorine in water passing therethrough by at least 50% at a flow rate of about 5 ml/second, said tube having a substantially continuous liquid porous side wall having an axis, a hollow interior, a first closed end, and a second open end;
• a manual valve operatively associated with said cap, in fluid communication with said tube of filtering material and manually movable between a position defining means for allowing liquid flow through said tube and a position defining means not allowing liquid flow through said tube;
• and
• said tube operatively connected to said cap second surface, and said tube having an outside diameter less than said inside diameter of said neck, and positioned with respect to said-cap within said bottle so that said tube axis is substantially transverse to said second surface and so that flow of liquid through said tube is primarily radial with respect to said tube axis during filtering, and through said side wall.

A filter assembly for use with a bottle having a circular cross-section neck or open end to simultaneously cap the neck or open end and filter liquid poured out of the bottle through the neck or open end, comprising:

• a tube of filtering material having a porosity of about 10-120 microns, and having a substantially continuous liquid-porous side wall having an axis, a hollow interior, a first closed end, and a second open end;
• a cap for a bottle neck or end, having a fitting portion thereof for cooperating with a bottle neck or end and closing a neck or end, said cap having first and second substantially opposite surfaces;
• a manual valve comprising a baby bottle nipple extending from said cap first surface;
• and
• said tube operatively connected to said cap second surface at said tube second open end, and positioned with respect to said cap within a bottle so that said tube axis is substantially transverse to said second surface and so that flow of liquid through said tube is primarily radial with respect to said tube axis during filtering, and through said side wall.