Method of covering corrugated drainage tubes

Details Method of covering corrugated drainage tubes Method of covering corrugated drainage tubes

1977-01-31

1979-12-25

Cuchlinski, Jr., William A.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

B01D 2914

Patent

active

041804643

ABSTRACT:
A method of covering a corrugated drainage tube of the type having alternating peaks and valleys and a plurality of openings in selected valleys arranged along the longitudinal axis of the tube, said method comprising the steps of knitting a length of tubular knit fabric of less diameter than a maximum diameter of the corrugated tube, drawing the tubular knit fabric onto the tube under tension, and relaxing the tubular knit fabric to conform to the surface configuration of the corrugated tube.

REFERENCES:
patent: 1137480 (1915-04-01), Gwynn
patent: 2394895 (1946-02-01), Burhans
patent: 2724176 (1955-11-01), White
patent: 2781619 (1957-02-01), Gardes
patent: 3356227 (1967-12-01), Rule et al.
patent: 3685657 (1972-08-01), Hunter et al.
patent: 3830373 (1974-08-01), Sixt et al.

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