Pig for repairing interior portions of a pipeline

Details Pig for repairing interior portions of a pipeline Pig for repairing interior portions of a pipeline

1983-11-17

1985-03-12

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Product or preform repair or restoring means

425 13, B29D 2308

Patent

active

045042047

ABSTRACT:
A pig for repairing interior portions of a pipeline with resin. The pig has a cylindrical portion diameter of which is slightly smaller than the inner diameter of the pipeline so as to allow the moving of the pig in the pipeline.
A pair of introduction portions are formed by slanting rear portions of the cylindrical portion.
A pair of discharge grooves are axially formed in the cylindrical portion. The discharge grooves are overlapped with the introduction portions interposing periphery portions of the cylindrical portion and opened to the front of the cylindrical portion. Thus the resin in the rear side of the pig can be discharged to the front side passing through the periphery portions and discharge grooves.

REFERENCES:
patent: 2851061 (1958-09-01), Bernard et al.
patent: 2894539 (1959-07-01), Cook et al.
patent: 3091013 (1963-05-01), Robinson
patent: 4181484 (1980-01-01), Kostylev et al.
patent: 4370113 (1983-01-01), Nakashin

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