Hydraulically efficient ribbed pipe having openings

Details Hydraulically efficient ribbed pipe having openings Hydraulically efficient ribbed pipe having openings

1994-04-29

1995-10-03

Bryant, III, James E.

Pipes and tubular conduits

Spirally seamed

138122, 138135, 138173, F16L 0916

Patent

active

054544025

ABSTRACT:
A hydraulically efficient metal pipe particularly adapted for use in storm drain and sanitary sewer applications which is adapted for use with a self-supporting interior inert protective lining. The pipe has a channeled wall defining a plurality of outwardly projecting structural ribs and a hydraulically smooth interior surface. The ribs are preferably of a helical configuration and the channels which are formed interiorly thereof are generally either square or rectangular in cross-section and are open along the interior surface of the pipe. The walls defining the ribs can be tapered inwardly to form triangular-shaped channels so as to define an anchor throughout the length of the pipe for securing thereto a smooth interior lining of corrosion-resistant protective material.

REFERENCES:
patent: 1263340 (1918-04-01), Silk
patent: 3224814 (1965-12-01), Fisher
patent: 3572394 (1971-03-01), Davis
patent: 3731711 (1973-05-01), Bauer
patent: 4161194 (1979-07-01), Nyssen
patent: 4161811 (1979-07-01), Nyssen
patent: 4790686 (1988-12-01), Cheist et al.
patent: 4852616 (1989-08-01), Holcomb

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