Pipeline bend verification pig

Details Pipeline bend verification pig Pipeline bend verification pig

1983-12-05

1988-11-01

Martin, Jr., William D.

Geometrical instruments

Gauge

With conveying wheel support

33302, 33304, G01B 528

Patent

active

047809620

ABSTRACT:
A pipeline pig device comprises a longitudinal housing of given length, having adjacent each end a substantially centralizing packer or seal by which pipeline fluids may be used to propel the device. Intermediate the longitudinal housing are a plurality of outwardly extending feeler arms which ride against the pipeline interior. Movement of the feeler arms caused by the pig traversing bends, miters or other deviations from straight, round pipe are transmitted to a recording system which, in combination with odometers, will provide information and/or changes in such bends.

REFERENCES:
patent: 3571937 (1971-03-01), Sears
patent: 3755908 (1973-09-01), Ver Nooy
patent: 3789511 (1974-02-01), Groom et al.
patent: 3886665 (1975-06-01), Lowen
patent: 4228593 (1980-10-01), Frank et al.
patent: 4342225 (1982-08-01), Jondera et al.

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