Method and apparatus for injecting foam into a pipeline, includi

Details Method and apparatus for injecting foam into a pipeline, includi Method and apparatus for injecting foam into a pipeline, includi

1976-03-04

1977-05-24

Bashore, S. Leon

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134167C, 134168C, 134169C, B08B 902

Patent

active

040253600

ABSTRACT:
Method and apparatus for injecting foam into a pipeline. Foam is produced and delivered under pressure to the inlet of a flexible foam-conducting tube. An inflatable plug slidably encircles the tube, so that the tube can be adjusted to extend any desired distance beyond the plug. The plug can be enlarged by inflation to bear against the wall of the pipe and also against the wall of the tube, so as to prevent the foam from flowing back beyond the plug.

REFERENCES:
patent: 2273984 (1942-02-01), Osborn
patent: 2485008 (1949-10-01), Morris
patent: 3608098 (1971-09-01), Andrisani
patent: 3741807 (1973-06-01), Horne
patent: 3874926 (1975-04-01), Horne et al.
patent: 3937404 (1976-02-01), Johnson

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