Patent ID: 11873938
Assignee: TDW DELAWARE, INC.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A pipeline pigging element (10) arranged to change its size in an axial and a radial direction as a function of applied pipeline pressure when traversing an interior of a pipeline, the pipeline pigging element comprising:
an elastomeric body (11) including:
a first circumferential band (13) having a first section modulus;
a second circumferential band (15) located adjacent the first circumferential band in the axial direction and having a second section modulus different than that of the first section modulus;
each of the first and second circumferential bands changing at different rates from one another between an uninflated and an inflated state at the applied pipeline pressure;

the elastomeric body, when traversing the interior of the pipeline, having a first length and a first diameter at a first applied pipeline pressure and a second length and a second diameter different than the first length and diameter at a second applied pipeline pressure different than the first applied pipeline pressure.