Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining
Patent
1995-07-31
1997-06-03
Neuder, William P.
Hydraulic and earth engineering
Underground passageway, e.g., tunnel
Lining
405155, 138 98, 156294, E02D 1100
Patent
active
056347430
ABSTRACT:
The lining of pipelines and passageways is effected by everting a flexible lining tube containing curable synthetic resin into and along the pipeline or passageway. The resin is of the latent type and requires the application of energy to initiate the cure, after which the cure continues. The cure is initiated by applying energy, e.g. ultrasonic, to the everting face via a device which travels in the pipeline or passageway ahead of the everting face. The device is kept centralised and focuses energy on the center of the everting face. As the respective lengths of the lining pass the everting face and lie on the pipeline or passageway surface they cure to hard condition. The process is dynamic and quick.
REFERENCES:
patent: 3860565 (1975-01-01), Barber, Jr.
patent: 4009063 (1977-02-01), Wood
patent: 4064211 (1977-12-01), Wood
patent: 4135958 (1979-01-01), Wood
patent: 4456401 (1984-06-01), Williams
patent: 4602974 (1986-07-01), Wood et al.
patent: 4836715 (1989-06-01), Wood
Neuder William P.
Sound Pipe, Ltd.
Wolfson Michael I.
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