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

Claim 20:
21. 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 plurality of alternating first and second circumferential bands (13, 15) in the axial direction,
the first circumferential band (13) of the plurality having a first section modulus;
the second circumferential band (15) of the plurality 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.