Arrangement for measuring wheel alignment and steering geometry in an automobile
US4690557A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1985 |
| Grant date | Sep 1, 1987 |
| Priority date | — |
| Expiry date | Jun 7, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2210/283
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to an arrangement for measuring wheel alignment and steering geometry in an automobile. A substantially horizontal bar is placed in front of the vehicle at right angles to its longitudinal axis. A light source displaceable along the bar emits a narrow ray of light at an angle to the bar. The vehicle front wheel to be measured is provided with a unit including at least three angle sensors of which at least one comprises a widely dimensioned light detector placed in the focal plane of an optical means. The light source on the bar is set to a position on said bar where the emitted light beam strikes the optics approximately at the center thereof. A calculating device determines the wheel alignment values with the aid of the angle sensor signals for variable positions of the wheel and the motion of the light source along the bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.