Gas separation – With means securing or retaining separating media – Unit or cohesive sheet-like media in flow line or frame
Patent
1982-03-03
1984-01-17
Lacey, David L.
Gas separation
With means securing or retaining separating media
Unit or cohesive sheet-like media in flow line or frame
55270, 55481, 55DIG69, 55DIG31, 7386323, 7386325, 73 28, B01D 4610
Patent
active
044262140
ABSTRACT:
Disclosed are filters which are particularly useful in sampling devices for detecting radioactive particulate contaminants in a gaseous medium, such as air. The filters comprise a filter membrane sandwiched between two pieces of plastic material having holes exposing the filter membrane to the gaseous medium. The filters can readily be handled by grasping them by their plastic portions and there is little risk of the filter medium being damaged. An air tight seal may easily be made with the plastic surrounding the filter medium. The filter is easily constructed by placing a piece of filter material to cover a hole in a plastic base layer and then covering them both with a plastic cover layer having a hole to match the hole in the base layer. The cover layer is preferably formed of self-adhesive layer.
REFERENCES:
patent: 1020782 (1912-03-01), Tinker
patent: 3342729 (1967-09-01), Strand
patent: 3348044 (1967-10-01), Sanders
patent: 3555278 (1971-01-01), Schroeder
patent: 3654801 (1972-04-01), Keefer et al.
patent: 3679311 (1972-07-01), Vandusen, Jr.
patent: 3803810 (1974-04-01), Rosenberg
patent: 4174205 (1979-11-01), Koushiafes
Fallow Charles W.
Hoffman Martin P.
Lacey David L.
Pylon Electronic Development Company Ltd.
Wasson Mitchell B.
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