Diffuser with replaceable filter

Details Diffuser with replaceable filter Diffuser with replaceable filter

1977-09-06

1979-11-27

Prunner, Kathleen J.

Gas separation

Combined or convertible

Involving ash tray

55413, 55502, 55504, 55505, 55511, 55DIG29, 98 36, 98 40D, B01D 3502

Patent

active

041759362

ABSTRACT:
A diffuser of the type used in supplying filtered air to a clean work area includes a filter housing within which is supported a filter panel. Gaskets are carried on the upper and lower peripheral surfaces of the panel and an adjustable, resilient clamp operably engages the filter and biases the filter and the upper gasket to form a knife edge seal with a portion of the filter housing. A protective grill assembly is sealingly latched to the housing and also forms a knife seal with the lower gasket on the filter panel. Further, a curtain support member is disclosed which is carried by the grill assembly and seals an isolation curtain airtight to the ceiling.

REFERENCES:
patent: 2252724 (1941-08-01), Myers
patent: 3247652 (1966-04-01), Annas et al.
patent: 3380507 (1968-04-01), Bontrager
patent: 3465666 (1969-09-01), Knab
patent: 3780503 (1973-12-01), Smith
patent: 3788046 (1974-01-01), Kaeppler et al.
patent: 3870490 (1975-03-01), Landy
patent: 3986850 (1976-10-01), Wilcox
patent: 4034659 (1977-07-01), Raider

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