Self-compensating rolling weight deflectometer
US5753808A · kind A · utility
29Cited by
14References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1995 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Sep 11, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M5/0091
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rolling weight deflectometer for monitoring deflection of pavement under load. The deflectometer incorporates an alignment laser beam emitter that measures vertical displacement of each of a plurality of distance sensors mounted on a horizontal sensor bearer member that bends or vibrates as it is transported over a pavement for deflection measurement. The measured vertical displacements, due to member bending, allow the deflectometer to compensate for errors introduced by member bending and thereby provide a more accurate measurement of pavement deflection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.