Pipeline debris shearing device
US9089884B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2010 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Jan 2, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B9/0557
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pipeline debris shearing device includes a forwardly positioned, self sharpening, wear compensating, diameter conforming elastomeric member that forms a peeling edge having a negative rake angle to peel away debris from the internal wall of a pipeline. The peeling edge is formed at the point of meeting between a concave-shaped, curved forward face surface and a substantially straight outer peripheral surface. Radial slots may be provided to lessen the force being exerted on the peeling edge and provide for bypass flow to carry away debris removed by the peeling edge. Spaced-apart narrow stripper teeth may be added to help in removing harder deposits of debris. The peeling edge may be arranged substantially perpendicular the central longitudinal axis of the pipeline pig or arranged oblique to it. Further, the peeling edge may spiral about at least a portion of the pipeline pig.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.