Gas separation – With nonliquid cleaning means for separating media – Solid agent cleaning member movingly contacts apparatus
Patent
1983-05-23
1985-10-01
Hart, Charles
Gas separation
With nonliquid cleaning means for separating media
Solid agent cleaning member movingly contacts apparatus
55503, 55510, 73 28, B01D 5000
Patent
active
045443866
ABSTRACT:
A filter cassette for sampling of airborne substances comprising a body section having an air flow passageway that extends through the body section from an air inlet to an air outlet. A filter medium inside the body section is disposed across the air flow passageway for capturing airborne substances flowing through the passageway. The portion of the passageway directly downstream from the filter medium has a uniform frusto-conical contour converging in the direction of flow. The air inlet comprises openings in the body section upstream from the filter medium, the openings being arranged to direct air into the air flow passageway normal to the direction of flow onto the filter medium.
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patent: 3957469 (1976-05-01), Nebash
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patent: 4233043 (1980-11-01), Catterson
patent: 4314831 (1982-02-01), Barbic
patent: 4350507 (1982-09-01), Greenough et al.
patent: 4382808 (1983-05-01), Van Wormer et al.
Petrizzi Jeffrey M.
Trayford, III Charles
Environmental Safety Products, Inc.
Hart Charles
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