Embossed support member with high and low skip ribs

Details Embossed support member with high and low skip ribs Embossed support member with high and low skip ribs

1975-10-08

1977-10-11

Spear, Jr., Frank A.

Liquid purification or separation

Casing divided by membrane into sections having inlet

Energy recovery from treated liquid

210494M, B01D 3100

Patent

active

040534170

ABSTRACT:
An elongated, flexible and embossed support member is disclosed herein for use in a coil-type artificial kidney dialyzer to support an elongated, flattened and tubularly shaped semipermeable membrane. The membrane is of cellophane or a cellulose derivative and has the characteristic of stretching further in the transverse direction than in the longitudinal direction. The support member includes an imperforate fluid-impermeable web having angle ribs on one side and high and low skip ribs on the other side for positioning and supporting the membrane within the dialyzer. The angle ribs extend angularly from one longitudinal edge of the member to the other longitudinal edge. The skip ribs are arranged in alternating longitudinal rows of high and low ribs with each row including a plurality of intermittently spaced skip ribs. The height of the high skip ribs is greater than the height of the angle ribs, and the height of the low skip ribs is less than the height of the high skip ribs, with the height of all of the ribs being effective to prevent the membrane from contacting the web.

REFERENCES:
patent: 3738813 (1973-06-01), Esmond
patent: 3753712 (1973-08-01), Janneck et al.
patent: 3963621 (1976-06-01), Newman

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