Patent ID: 7163625

Claim:
A filtration device, comprising: an unfiltered fluid inlet surface, through which unfiltered fluid may enter the filtration device; a first filter media in fluid communication with the unfiltered fluid inlet surface, said first filter media being spirally wound and being positioned with respect to said unfiltered fluid inlet surface so that unfiltered fluid entering the filtration device through the unfiltered fluid inlet surface is directed to flow radially inward and through the first filter media, said first filter media being spirally wound with generally complete overlap and contact between adjacent layers such that edges of said layers are generally aligned in a common plane, said first filter media comprising a laminate of a plurality of different material layers, wherein at least one of said material layers in said laminate comprises activated carbon; a core in fluid communication with the first filter media, said core having a surface that defines apertures, said core being positioned with respect to said spirally wound first filter media so that filtered fluid flowing radially inward from the first filter media flows into the core, said core having a first end and a second end with said first end being open so that filtered fluid may exit the core and with said second end being closed so that the flow of fluid through the second end is prevented; and a filtered fluid outlet in fluid communication with the first end of the core so that filtered fluid flowing from the first end of the core exits the filtration device through the filtered fluid outlet.