Method and apparatus for measuring vehicle wheel roll radius
US6237234A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1999 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Sep 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2210/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus are provided for determining a roll radius of a vehicle wheel for use in alignment and other diagnostic or maintenance operations. An optically scannable target is attached to a wheel of the vehicle. A first position measurement is made using a machine vision system, such as a three-dimensional aligner. The vehicle is rolled a short distance and a second position measurement is made. The linear and angular differences of the first and second position measurements are used to compute and store a roll radius value. Alignment values resulting from alignment of the motor vehicle are modified based on the roll radius value. A plane angle value may also be created and stored for use in adjusting the alignment values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.