Gas separation – Flexible or collapsible bag type – Housing closure secures bag
Patent
1993-03-22
1993-11-30
Hart, Charles
Gas separation
Flexible or collapsible bag type
Housing closure secures bag
55381, 55493, 55495, 454284, 454289, B01D 4610
Patent
active
052660915
ABSTRACT:
An air filter for use in combination with a climate control system having a register with an outwardly extending perimeter flange and an exposed surface, the outwardly extending perimeter flange supporting the register when the register is installed over an aperture formed in a support surface. The air filter includes porous material for filtering air emanating from the system with limited restriction of air flow caused by the porous material covering the register which, when not covered, would allow air to flow from the system unrestricted. The air filter slips over the register with excess material extending beyond the perimeter flange of the register and folded under the perimeter flange for securing the porous material to the register by interposing the porous material between the perimeter flange and the support surface.
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