Gas separation – Combined or convertible – In motor vehicle
Reexamination Certificate
2004-05-13
2009-10-13
Smith, Duane (Department: 1797)
Gas separation
Combined or convertible
In motor vehicle
C055S471000, C096S130000, C096S139000, C096S143000, C096S144000, C096S108000, C096S134000, C096S135000, C096S140000, C096S141000, C096S142000, C422S122000, C422S171000, C422S173000, C423S239100, C423S244090, C165S061000, C454S158000, C095S139000, C095S148000
Reexamination Certificate
active
07601189
ABSTRACT:
A filtering method and a filter device (10) for removing impurities from the breathing air (24) in a room, an air raid shelter or a vehicle. According to the filtering method, the air to be filtered is driven through a carbon dioxide filter (13) by a fan (15), with the result that at least a portion of the carbon dioxide and/or mold spores and other impurities in the air are trapped in the carbon dioxide filter. After the filtering, the filter is regenerated and the carbon dioxide and/or mold spores trapped in it are removed by a technique whereby air heated by a thermal resistor (20) is passed through the filter, this air preferably consisting of the same air to be filtered.
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Anttila Tomi
Lampinen Markku
Rauhala Keijo
Kubovcik & Kubovcik
Oy Hydrocell Ltd.
Pham Minh-Chau T
Smith Duane
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