Gas separation – Flexible or collapsible bag type – Seaming – reinforcing or bag structure
Patent
1977-10-03
1980-02-12
Lacey, David L.
Gas separation
Flexible or collapsible bag type
Seaming, reinforcing or bag structure
55487, 55DIG2, 210505, B01D 4602
Patent
active
041881974
ABSTRACT:
A filter bag for dry copiers, i.e. copiers which employ particulate toner material. The bag comprises a filter element and a protective cover of porous non-woven material which imparts negligible resistance to air flow.
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patent: 3570224 (1971-03-01), Clemens
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For Compressed Air 400,000 Times Cleaner Than the Air We Breathe, Filtration & Separation, May/Jun., 1973, p. 301.
It's Paper--Sheet-fabric--It's Spun Bonded, Modern Plastic, Apr. 1968, pp. 93-96.
Amberkar Suresh D.
Hansen David E.
Hansen Elwood F.
Dennison Manufacturing Company
Kersey George E.
Lacey David L.
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