Method and apparatus for applying a lining material to a conduit

Details Method and apparatus for applying a lining material to a conduit Method and apparatus for applying a lining material to a conduit

1986-07-01

1988-04-05

Simmons, David

Coating apparatus

Projection or spray type

Work-supported and guided carriage

118215, 118DIG10, B31B 100

Patent

active

047351683

ABSTRACT:
Apparatus for applying a lining material to a conduit comprises an elongate flexible pipe for lining material. A dispensing nozzle is provided at one end of the pipe and the other end of the pipe is squeezed between a pair of driven rollers to expel the lining material through the dispensing nozzle as the pipe is drawn through the conduit. A pair of circular steel wire brushes are mounted on the pipe below the dispensing nozzle center the pipe in the conduit and also clean the side wall of the conduit ahead of the nozzle. The cross-sectional area of the pipe is calculated so that as the pipe is pulled back down the conduit it deposits an evenly distributed, predetermined amount of lining material on the side wall of the conduit.

REFERENCES:
patent: 3039428 (1962-06-01), McLean
patent: 3327898 (1967-06-01), Farr
patent: 3987963 (1976-10-01), Pacht
patent: 4216738 (1980-08-01), Muta
patent: 4233928 (1980-11-01), Hara et al.
patent: 4368219 (1983-01-01), Nagata et al.
patent: 4380236 (1983-04-01), Norton

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