Patent ID: 8506681

Claim:
An apparatus for cleaning air comprising: a housing having a chamber; a carbon dioxide scrubber layer of particles of soda lime disposed in the chamber which cleans carbon dioxide from air passing through the scrubber layer, the layer having a plurality of cartridges having the particles of soda lime, each cartridge having a cartridge housing having a cartridge chamber disposed within the housing, and a porous top and opposing porous bottom with the cartridge chamber disposed between the top and the bottom; and a forcing element which draws the air into the scrubber and forces the air through the scrubber layer which is powered without any electricity, the forcing element includes a fan, the forcing element includes a fluid powered motor mechanically engaged with the fan to operate the fan which draws the air into the chamber and forces the air through the layer, the forcing element includes a valve in fluid connection with the motor through which fluid is provided to the motor to operate the motor, the valve includes a compressed air port which receives a flow of compressed air.