Plastic and nonmetallic article shaping or treating: processes – Forming structural installations in situ – Repositioning or moving mold to form sequential portions of...
Patent
1990-07-13
1992-04-14
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Forming structural installations in situ
Repositioning or moving mold to form sequential portions of...
118DIG10, 138145, 264 35, 264514, 264564, 264573, 2642092, 2642093, 425 13, 4253261, 425380, B29C 4706, B29C 6334
Patent
active
051045958
ABSTRACT:
Underground pipelines that carry wastewater water, natural gas and industrial fluids deteriorate with age. Shown is a process and apparatus for installing a thermoplastic liner in such existing pipelines to accomplish in situ rehabilitation. It involves extruding a tube of thermoplastic liner material within the interior of a pipeline in situ, said tube having an outside diameter smaller than the inside diameter of said pipeline. The tube is next expanded so that the outside diameter of said tube is essentially equal to the inside diameter of said pipeline. The expanded tube is then cooled and hardened in a liner configuration.
REFERENCES:
patent: 2632205 (1953-03-01), Fitz Harris
patent: 3122786 (1964-03-01), Huisman
patent: 3376181 (1968-04-01), Larson et al.
patent: 3560295 (1971-02-01), Kimbrell et al.
patent: 3720557 (1973-03-01), Longoni et al.
patent: 4207130 (1980-06-01), Barber
patent: 4233101 (1980-11-01), Scragg et al.
patent: 4308824 (1982-01-01), Muta et al.
patent: 4371569 (1983-02-01), Muta et al.
patent: 4386628 (1983-06-01), Stanley
patent: 4419163 (1983-12-01), Yamamoto et al.
patent: 4496499 (1985-01-01), Brittain et al.
patent: 4640313 (1987-02-01), Stanley
patent: 4773450 (1988-09-01), Stanley
patent: 4777984 (1988-10-01), Storah
patent: 4867921 (1989-09-01), Steketee
patent: 4925381 (1990-05-01), Aoki et al.
Hunter, R. M. and Stephens, J. E., System for In Situ Pipeline Rehabilitation, Jul. 1990, pp. 9-13.
Silbaugh Jan H.
Vargot Mathieu
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