Filter cartridge and method of manufacturing the filter cartridg

Details Filter cartridge and method of manufacturing the filter cartridg Filter cartridge and method of manufacturing the filter cartridg

1978-03-24

1979-05-29

Sever, Frank

Gas separation

Flexible or collapsible bag type

Valved, self-closing, or apparatus contained bag closing means

55491, 210489, 210492, 210497R, 210DIG5, B01D 4600

Patent

active

041566017

ABSTRACT:
A filter cartridge for filtering fluids comprising: a cylindrical porous support tube which is permeable to the fluid to be filtered; at least one layer of boro-silicate glass filter paper being wrapped around the cylindrical support; a porous sleeve including a wall having a longitudinal slit therein to allow wrapping of the sleeve around the filter paper; and a zipper affixed to the wall which closes the slit and maintains the position of the glass filter paper without damage to the paper. Also disclosed is a method for manufacturing a filter cartridge having as a principle filtering element a boro-silicate glass paper which is very fragile and can be seriously degraded by crushing. The method comprises wrapping at least one layer of boro-silicate glass paper around a cylindrical porous support; wrapping a cylindrical porous sleeve including a wall having a longitudinal slit therein around the filter paper to secure and protect the filter paper; and closing the slit by closing a zipper attached to the wall.

REFERENCES:
patent: 934076 (1909-09-01), Kneuper
patent: 1755962 (1930-04-01), Shigyo
patent: 1894884 (1933-01-01), Page
patent: 1897976 (1933-02-01), Birkholz
patent: 2557279 (1951-06-01), Greenberg
patent: 2812065 (1957-11-01), Wilson
patent: 2826265 (1958-03-01), DeWoody
patent: 3876544 (1975-04-01), Fowler
patent: 3980565 (1976-09-01), Fowler

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