Process and prepressing pipe for laying a pipeline in the earth

Details Process and prepressing pipe for laying a pipeline in the earth Process and prepressing pipe for laying a pipeline in the earth

1982-10-22

1985-11-12

Husar, Cornelius J.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Repair, replacement, or improvement

405135, 405154, 285 55, 138109, B63B 3504, E21D 1100, F16L 5500, F16L 102

Patent

active

045524858

ABSTRACT:
A process for laying a prepressed pipeline and pipe advantageously employed therein are described. Concrete pipe sections have an inner lining of a polymeric material anchored by flexible projections to the inner surface of the pipe. The thickness of the lining is increased at the ends of the pipe to form an elongated sealing surface and a stress absorbing region. A compression seal may thereby be employed. Stresses created by the seal are absorbed both by the thickened region and by a shoulder formed in the concrete wall of the pipe. In use, compression is maintained as the result of friction between the pipe well and the surrounding earth.

REFERENCES:
patent: 406140 (1889-07-01), Howell
patent: 2789844 (1957-04-01), Kessler
patent: 3177902 (1965-04-01), Rubenstein
patent: 3516690 (1970-06-01), Kreig
patent: 3858912 (1975-01-01), Bower
patent: 3965555 (1976-06-01), Webster et al.
patent: 4091630 (1978-05-01), Nemoto et al.
patent: 4195850 (1980-04-01), Berger et al.
patent: 4363565 (1982-12-01), MacKenzie
patent: 4388021 (1983-06-01), Weiss

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