Concrete pipe with an inner lining

Details Concrete pipe with an inner lining Concrete pipe with an inner lining

1984-03-22

1985-02-19

Marcus, Stephen

Pipes and tubular conduits

Combined

With end structure

138141, 138144, F46L 908

Patent

active

044999232

ABSTRACT:
A concrete pipe of the type employed, for example, in large sewers is described, having a concrete wall and an inner lining sheet of a polymeric or other plastic material anchored to the wall by a layer of fabric welded or otherwise firmly connected to the sheet. The fabric includes a plurality of preferably monofilament projections having a higher modulus of elasticity than the material of the sheet which projections extend into the inner wall of the concrete pipe and anchor the fabric and sheet thereto. A protective plastic ring and a covering strip positively support the sheet at the joint between two pipes.

REFERENCES:
patent: 868785 (1907-10-01), Johnson
patent: 1152860 (1915-09-01), Stoetzer
patent: 2925831 (1960-02-01), Welty et al.
patent: 3742985 (1973-07-01), Rubenstein
patent: 3868296 (1975-02-01), McKeon, Jr. et al.
patent: 4241762 (1980-12-01), Link et al.
patent: 4242406 (1980-12-01), El Bouhnini et al.

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