Gas separation: processes – Filtering
Patent
1994-01-18
1995-08-22
Bushey, C. Scott
Gas separation: processes
Filtering
553851, 55470, 55472, 55481, 55493, B01D 4600
Patent
active
054436257
ABSTRACT:
The air filtering fixture is for suspension from the ceiling of a room to filter out unwanted tobacco smoke. The fixture has a housing formed of peripheral walls defining a generally vertical air path. The housing has an upper compartment portion and a lower flared hood portion. An air filter assembly is located within the upper compartment and a lighting assembly is situated within the hood portion below the filter assembly. At least one fan assembly is located above the filter assembly in the upper compartment. The fixture intakes air through a bottom opening in the flared hood portion and propels the air as an air stream upwardly out of a top opening in the upper compartment and toward the ceiling. A toroidal air movement about the housing is facilitated which induces unfiltered air laterally external to the housing to move downwardly from above the housing and enter the bottom opening to be filtered. An access opening in the housing permits easy filter replacement.
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Baker Robert C.
Bushey C. Scott
Proehl Jeffrey A.
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