Patent ID: 7226536

Claim:
A portable water filtration device comprising: a liquid-tight filter container having an interior volume, side walls, a base wall, a top opening and a lid mounted thereon, said lid movable between an open position and a closed position wherein said lid covers and seals said top opening to make said liquid-tight filter container liquid-tight; a filtration device mounted in said liquid-tight container, said filtration device including; an inlet opening extending through one of said side walls and said lid for receiving liquid into said filtration device; a first filtration device in liquid transfer connection with said inlet opening for receiving and filtering liquid flowing therethrough; a second filtration device in liquid transfer connection with said first filtration device for receiving and further filtering liquid flowing therethrough; said first and second filtration devices selected from the group comprising ultraviolet, activated carbon and reverse osmosis filters; an outlet opening in liquid transfer connection with said second filtration device and extending through one of said side walls and said lid for releasing liquid from said filtration device; said filtration device operable to filter liquid therethrough via liquid flow in either direction through said filtration device, said filtration device free of unidirectional flow-specific operative elements whereby liquid flowing through said filtration device is filtered regardless of flow direction, said inlet opening being usable for alternative input of liquid and output of liquid and said outlet opening being usable for alternative input of liquid and output of liquid from said filtration device; said filtration device operative to filter liquid at a flow rate of at least one (1) gallon per minute; and said filtration device operative with said lid of said liquid-tight filter container in both open and closed positions such that said liquid-tight filter container, when said lid of said liquid-tight filter container is in said closed position, is operable to prevent liquid from entering said interior volume thereof external of said filtration device thereby preventing contamination of said filtration device from accidental incursion of contaminants into said liquid-tight filter container.