Patent
1987-09-22
1988-11-29
Joyce, Harold
981151, F23J 1100
Patent
active
047872985
ABSTRACT:
Ambient and localized sites within a room space are exhausted as required into a single fan unit and exhaust main. Flexible ducts connected to the main are positionable at various site locations and when one is used to for effecting exhaust at a site, the ambient exhaust to the main and the exhaust path of any other flexible duct is closed off so that exhaust flow in the system can enter only through the selected flexible duct thus maximizing the rapidity and facility with which undesirable gases present at the local site can be removed effectively and most economically from the room space.
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Gilman Michael G.
Joyce Harold
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
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