Method and apparatus for cement lining of pipes

Details Method and apparatus for cement lining of pipes Method and apparatus for cement lining of pipes

1978-06-06

1981-02-24

Arnold, Donald J.

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Applied to clay, sand, or earthen workpiece

239214, 239215, 264269, 264270, 425460, B29D 900, B05C 302

Patent

active

042527635

ABSTRACT:
A pipe lining apparatus includes a distributor head which throws cement mortar centrifugally against the interior of a pipe, a trowel which smooths the cement mortar and a liquid coating spray applicator which applies a curing control substance to the trowelled lining. The spray applicator comprises an air atomizing device which produces a very fine coating spray and blows it onto the freshly applied mortar lining without disturbing the lining. Also, in one embodiment the coating spray application is mounted to swing laterally with the trowel so as to be maintained centrally in the pipe.

REFERENCES:
patent: 1636367 (1927-07-01), Illemann
patent: 1988329 (1935-01-01), Perkins
patent: 2168917 (1939-08-01), Perkins
patent: 2204785 (1940-06-01), Bennett
patent: 2293365 (1942-08-01), Scott
patent: 3069093 (1962-12-01), Schultz
patent: 3257699 (1966-06-01), Ruegsegger
patent: 3920363 (1975-11-01), Holland

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