Method and apparatus for treating the atmosphere
AssigneeEngelhard Corporation
InventorsTerence C. Poles, William G. Rosenberg, John Calcagni
Life of this patent
Estimating the term…
Abstract
Method and apparatus for treating the atmosphere to lower the concentration of pollutants, such as ozone, hydrocarbons, nitrogen oxides, sulfur oxides, carbon monoxide and the like, therein in which ambient air is passed into operative contact with a stationary substrate such as an automobile at rest, a billboard, an air conditioning unit, a transportation tunnel and the like, the stationary substrate having at least one ambient air contacting surface having a pollutant treating composition, such as manganese compounds, copper compounds, platinum group metals and compounds thereof, precious metals, and the like, thereon.
Claims14
A method for removing pollutants out of atmospheric air comprising sensing the concentration of pollutants within the atmospheric air and selectively drawing or forcing atmospheric air into operative contact with a stationary substrate containing a pollutant treating composition when the concentration of pollutants exceeds a predetermined level so that at least a portion of the pollutants are removed from the atmospheric air that contacted the stationary substrate, said method further comprising generating a first signal corresponding to the power level of a power source, comparing the first signal to a second signal corresponding to a predetermined power level, and when the second signal exceeds the first signal, transmitting a third signal to the power source to deactivate a device for drawing or forcing the atmospheric air into contact with the substrate.
A method for removing pollutants out of atmospheric air comprising sensing the temperature of the atmospheric air, comparing the temperature of the atmospheric air with a predetermined temperature indicative of a minimum concentration of pollutants in the atmospheric air, and selectively drawing or forcing the atmospheric air into operative contact with a pollutant treating composition located on a stationary substrate when the sensed temperature equals or exceeds the predetermined temperature, wherein at least a portion of the pollutants are removed from the atmospheric air that contacted the pollutant treating composition.
A method for removing pollutants out of atmospheric air comprising drawing or forcing the atmospheric air into operative contact with a pollutant treating composition located on a stationary substrate by generating a radio-frequency signal and receiving the radio-frequency signal, said received radio-frequency signal activating a device for drawing the atmospheric air into contact with the substrate, wherein at least a portion of the pollutants are removed from the atmospheric air that contacted the pollutant treating composition.
A method for removing pollutants out of atmospheric air comprising selectively drawing or forcing the atmospheric air into operative contact with a pollutant treating composition located on a stationary substrate during a pre-selected time period, the selective drawing or forcing of atmospheric air being controlled by a timing device, wherein at least a portion of the pollutants are removed from the atmospheric air that contacted the pollutant treating composition.
Dependencies are inferred from the claim text.