Pipeline pig for lining pipe lines

Details Pipeline pig for lining pipe lines Pipeline pig for lining pipe lines

1981-11-30

1983-07-19

McIntosh, John P.

Coating apparatus

Solid member or material acting on coating after application

Inside of hollow work

118103, 118DIG10, 1510405, B05C 700

Patent

active

043938051

ABSTRACT:
A pipeline pig for lining pipe lines with an internal coating of a solidifying plastic composition with which the pipe line is spread by means of the pig, the pipeline pig having at least one spreader body and at least one forward and one rear guide body. The guide body comprises at least three narrow, resiliently elastic guide pieces bent into U-form comprising a middle part with forward and rear U-legs at the ends and rounded transitions from the middle part to the U-legs, the middle parts extending in the axial direction of the pipeline pig for guidance of the pipeline pig in the pipe line by abutment on the inner wall of the pipe line and being offset in relation to one another in the circumferential direction, the forward U-legs being non-displaceably secured in the axial direction in the pig and the rear U-legs being displaceably mounted in the axial direction in the pig and secured to a common bearing.

REFERENCES:
patent: 528132 (1894-10-01), Jess
patent: 2480358 (1949-08-01), Curtis et al.
patent: 3111431 (1963-11-01), Weaver
patent: 3135629 (1964-06-01), McLean
patent: 3363301 (1968-01-01), Delaruelle et al.
patent: 3950461 (1976-04-01), Levens

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