Selective twist filtration roving

Details Selective twist filtration roving Selective twist filtration roving

1984-11-19

1989-01-31

Fisher, Richard V.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

2104971, 55487, 19236, 57253, 242 544, B01D 3908

Patent

active

048013838

ABSTRACT:
This invention relates to a filtration roving with the cross section of the roving exhibiting portions more tightly twisted than the remainder of the roving.

REFERENCES:
patent: Re27717 (1973-08-01), Breen et al.
patent: 1751000 (1930-03-01), Goldman
patent: 1958268 (1934-05-01), Goldman
patent: 2368216 (1945-01-01), Hastings et al.
patent: 3319793 (1967-05-01), Miller, Jr. et al.
patent: 3334752 (1967-08-01), Matravers
patent: 3356226 (1967-12-01), Miller, Jr. et al.
patent: 3624779 (1971-11-01), Miller, Jr. et al.
patent: 3904798 (1975-09-01), Vogt et al.
patent: 4014076 (1977-03-01), Slanik
patent: 4225442 (1980-09-01), Tremblay et al.
"Cartridge Filtration Guide", 1980, pp. 4-6.
"Dref OE System", para. 3.2 & 7.4, pictures 11, 12, 17, 18.

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