Measuring device for reinforcing steel rods for concrete
US6678063B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Jun 5, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/105
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method and an arrangement for optically detecting the measurements, in particular the diameters, of a long object during or after its production, which object moves forward continuously at high speed in lengthwise direction. With this method, one light beam intersects with the object at a measuring location at a flat angle (&agr;) and a second light beam intersects with the object at the same measuring location at a flat angle (&bgr;) and the shadows formed in the process are detected. The light beams are offset relative to each other in the cross-sectional plane that extends perpendicular to the longitudinal axis of the object by a specific angle (&ggr;), and the angle (&agr;) corresponds to the angle (&bgr;) and preferably measures 10 to 40°, in particular essentially 20°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.