Pipeline inspection apparatus
US4249810A · kind A · utility
15Cited by
11References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1978 |
| Grant date | Feb 10, 1981 |
| Priority date | — |
| Expiry date | Feb 27, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B37/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Pipeline inspection apparatus is provided including a camera unit and associated illumination means, preferably a strobe flash unit, for recording on photographic film the images of internal surface portions of a pipe for detection of defects. The camera unit is moved longitudinally within a pipeline by a drive unit which preferably includes electric motors energized from a self-contained battery unit. Important features relate to means for automatically reversing the drive of the apparatus after it has travelled a predetermined distance and to mechanical features for facilitating movement of the device through bends and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.