Apparatus
AssigneeFLT Seals Technology Limited
InventorsSteve Smith, Simon Sykes
Life of this patent
Estimating the term…
Abstract
There is described a novel apparatus for use in connection with pipe cleaning and monitoring systems. The apparatus is a suspension system adapted to fit a pipeline pig shaft, the pig being provided with a plurality of wheels. The wheels are concentrically mounted around a biasing means which is operable in a direction coplanar with the pig shaft. There is also described a pipeline pig comprising the suspension system and a method of cleaning a pipeline.
Claims18
1-28. (canceled)
A pipeline pig provided with a suspension system for a pig shaft, said suspension system comprising a plurality of wheels, each wheel being supported by a respective radially mounted suspension arm connected, via a pivot pin, to a suspension mounting, the suspension arm also being connected, at a point along its length, to a tie rod, the tie rod being connected to a sliding piston assembly comprising a piston operable in a direction parallel with an axis of the pig shaft, such that the suspension system provides substantially constant wheel loading to accommodate a multi-diameter pipeline and a pivot axis of the pivot pin of the suspension arms is offset at an angle from the plane of the cross section of the pig shaft so that the pig rotates as it travels down a pipe.
Dependencies are inferred from the claim text.