Gas separation – With separated gas outflow control – Baffle or flow guide
Patent
1991-10-04
1992-03-31
Hart, Charles
Gas separation
With separated gas outflow control
Baffle or flow guide
55419, 55493, 55495, 55504, 55518, 55519, 55DIG31, B01D 4610
Patent
active
051004453
ABSTRACT:
A disposable filter for heating and ventilating registers wherein a supporting framework includes apertures with removable cover portions which permit selective air flow, means for securing the framework to the register or adjacent structural members and re-closable means for admitting a filter element to an interior cavity. In alternative configurations, differing filter media or replacement media may be mounted to the framework. A separately attached border trim may also be included for oversize registers. Also considered is a finish cover including means for retaining the filter to the cover and the cover to the ductwork port.
REFERENCES:
patent: 3046719 (1962-07-01), Tropiano
patent: 3429434 (1969-02-01), Hickin
patent: 3823926 (1974-07-01), Bracich
patent: 3831765 (1974-08-01), Flynn et al.
patent: 3905787 (1975-09-01), Roth
Johnson Howard C.
Kueng Marlys
Hart Charles
Tschida Douglas L.
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