Patent ID: 7758674

Claim:
A system for producing power, the system comprising (a) a filter assembly comprising: (i) a housing having an inlet and an outlet, the inlet receiving dirty atmospheric air into the filter assembly, and the outlet receiving clean air from the filter assembly; (ii) an end cap attached to an edge portion of said filter assembly; (iii) a filter element within said housing, the filter element comprising: (A) a physical filter portion constructed and arranged to remove particulate contaminants from the dirty air; and (B) a chemical filter portion constructed and arranged to remove chemical contaminants from the dirty air, wherein the chemical filter portion includes: (1) an acidic material capable of chemisorbing basic contaminants, or (2) a basic material capable of chemisorbing acidic contaminants, or (3) an acidic material capable of chemisorbing basic contaminants and a basic material capable of chemisorbing acidic contaminants; and (4) a shaped adsorbent material formed by extrusion, wherein the filter element is cylindrical and extends between the end cap and a second end cap; (b) a fuel cell having an air intake port; said air filter assembly constructed and arranged to provide clean air from the outlet of the filter assembly to the intake port of the fuel cell.