Compact fluid purification device with manual pumping mechanism

A compact fluid purification device comprising:

• a housing having an inlet for receiving unfiltered liquid and an open end;
• a first valve disposed within the inlet and being configured to only permit unfiltered liquid to flow into a hollow interior of the housing;
• a plunger received within the open end such that it slides within the interior of the housing, the plunger being movable between a fully extended position and a fully retracted position, wherein the plunger has an elongated housing that includes a filter element that is open at a distal end of the plunger housing and is in communication with an outlet that is associated with the plunger, wherein movement of the plunger toward the fully extended position causes unfiltered liquid to be drawn into the interior of the housing, wherein the filter element comprises a plurality of hollow filter membranes in the form of fibers that are open at the distal end of the plunger and are in communication with the hollow interior of the housing;
• and
• a second valve disposed within the outlet and being configured to only permit filtered liquid to be discharged from the plunger housing;
• wherein the unfiltered liquid is filtered when the plunger is moved toward the fully retracted position causing the unfiltered liquid in the interior to flow into the inside of the fibers and then across the fibers to a plunger space surrounding the fibers and into the outlet which is in fluid communication with the plunger space;
• wherein the outlet and second valve are located outside of the housing, the housing being configured to prevent the outlet and second valve from entering the interior space of the housing.

A compact fluid purification device comprising:

• a housing having an inlet for receiving unfiltered liquid and an open end;
• a first valve disposed within the inlet and being configured to only permit unfiltered liquid to flow into a hollow interior of the housing;
• a plunger received within the open end such that it slides within the interior of the housing, the plunger being movable between a fully extended position and a fully retracted position, wherein the plunger has an elongated housing that includes a filter element that is open at a distal end of the plunger housing and is in communication with an outlet that is associated with the plunger, wherein movement of the plunger toward the fully extended position causes unfiltered liquid to be drawn into the interior of the housing, wherein the filter element comprises a plurality of hollow filter membranes in the form of fibers that are open at the distal end of the plunger and are in communication with the hollow interior;
• and
• a second valve disposed within the outlet and being configured to only permit filtered liquid to be discharged from the plunger housing;
• a cap that is attached to a proximal end of the plunger housing, the cap having dimensions greater than the housing to prevent reception of the cap within the interior of the housing, wherein the outlet and second valve are formed in the cap at a location remote from the hollow interior of the housing;
• wherein the unfiltered liquid is filtered when the plunger is moved toward the fully retracted position causing the unfiltered liquid in the interior to flow into the inside of the fibers and then across the fibers to a plunger space surrounding the fibers and into the outlet which is in fluid communication with the plunger space.