Bottle with an integrated filtration assembly that is manually operated using a plunger

A bottle for storing drinking fluids, the bottle having an integrated filtration system, wherein the bottle comprises:

• a substantially cylindrical vessel body that has an inner surface and an outer surface;
• a pressing assembly that includes:
• a stopper, said stopper optionally defining a fluid passage therein;
• a filtration assembly;
• and
• a rod having a top end that is attached to the stopper and a bottom end that is releasably attached to the filtration assembly;
• and
• a neck portion whose cross-sectional area increases from a sole opening at its upper end, until it equals the cross-sectional area of said cylindrical vessel body, said neck portion receiving the pressing assembly such that the rod of the pressing assembly is slidably attached to a bearing of the neck portion, said bearing being located at a lower end of said neck portion, said neck portion being sealingly attachable to said cylindrical vessel body, an annular passage of sufficient size to permit water flow is defined between a sidewall of said sole opening and said rod;
• wherein:
• the filtration assembly comprises a chamber that receives a filtration element and a gasket that maintains a seal between the inner surface of the vessel body and an outer perimeter of the filtration assembly;
• the stopper sealingly engages said sole opening when in a completely lowered position;
• the orientation of the rod within the vessel is controlled by the gasket and by the bearing;
• and
• a contaminant present in the water stored in the vessel is removed when the pressing assembly is forced through the vessel body, thereby producing purified water which may then exit said bottle through said annular passage when said stopper is not sealingly engaged in said sole opening, or through said optional fluid passage in said stopper when said stopper is sealingly engaged in said sole opening.