Self-aligning sewer pipe laser
US5621531A · kind A · utility
20Cited by
39References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Apr 3, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C15/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for aligning individual sections of pipe includes directing a beam of collimated light in the general direction of the pipeline and scanning the beam laterally. A target, having a retro reflective portion, is positioned in a location that will be traversed by the scanning beam. A reflection of the beam produced by the reflective portion is received and processed. The scanning is discontinued when the reflective portion is located and the beam is aimed in a direction related to the position of the retro reflective target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.