Internal riser inspection device
US6904818B2 · kind B2 · utility
64Cited by
31References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2003 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Jan 24, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2675
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An internal inspection unit for pipe has ultrasonic transducers that inspect weld volume, weld root, and wall thickness. The ultrasonic transducers are mounted to a portion of the inspection unit that is rotatable, but no more than one full revolution. One of the units has independently movable shoes for each separate transducer. The shoes are moved between retracted and extended positions by pneumatic cylinders. The other unit has shoes that support more than one transducer, the shoes being biased outwardly by springs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.