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US 2017/0299108 A1Published application
Flexible pig for pipeline maintenance
OwnerSamuel Perstnevinventor
Life of this patent
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Abstract
The present invention provides pipeline pigs for maintenance of a pipeline, the pig including two adjacent ovular sections generally symmetrically disposed about a vertical axis, a polymeric band disposed along the vertical axis, the band being adapted to reduce a cross section of the pig along the axis and a longitudinal inner support member disposed centrally along the ovular sections and perpendicularly to the vertical axis.
Claims21
1-31. (canceled)
A pipeline pig for maintenance of a pipeline, the pig comprising:
- a. two adjacent ovular sections generally symmetrically disposed about a vertical axis;
- b. a polymeric band disposed along said vertical axis, said band being adapted to reduce a cross section of said pig along said axis;
- and
- c. a longitudinal inner support member disposed centrally along said ovular sections and perpendicularly to said vertical axis.
1 more element
A pipeline pig according to claim 46, wherein said expanded polyurethane has a density in a range of 3-25 kg/m3.
Dependencies are inferred from the claim text.