Duct insertion filter

Details Duct insertion filter Duct insertion filter

1996-11-20

1998-07-07

Chiesa, Richard L.

Gas separation

With means securing or retaining separating media

Unit or cohesive sheet-like media in flow line or frame

55DIG31, 55DIG35, B01D 3502

Patent

active

057762180

ABSTRACT:
A filter unit is provided for a forced air heating duct having an inside and an outlet end with a register. The unit includes a frame having a tapered body shaped to wedge within the duct adjacent the register. A filter is shaped to fit inside the duct and is disposed entirely between the duct and the register. The filter can be replaced by removing the register, while leaving the frame in place.

REFERENCES:
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patent: 2825500 (1958-03-01), McLean
patent: 5100445 (1992-03-01), Johnson et al.
patent: 5167677 (1992-12-01), Hammes
patent: 5173094 (1992-12-01), Brady
patent: 5216822 (1993-06-01), Madiedo
patent: 5240487 (1993-08-01), Kung
patent: 5350444 (1994-09-01), Gould
patent: 5417743 (1995-05-01), Dauber
patent: 5421862 (1995-06-01), Davis
patent: 5462569 (1995-10-01), Benjamin
patent: 5509950 (1996-04-01), Van De Graaf et al.
patent: 5597392 (1997-01-01), Hawkins et al.

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