Apparatus for determining the relationship of vehicle thrust line, and body center line for use in wheel alignment
US4615618A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1984 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Jun 21, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2210/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus is provided for determining the relationship between a vehicle's thrust line and the vehicle's body center line. A movable light source is located externally of and independent of the vehicle and serves to establish a pair of reference light beams falling in parallel planes and which are spaced apart sufficient to permit a vehicle to be positioned longitudinally therebetween. The vehicle's thrust direction is determined by mounting sensors on the nonsteerable wheels so as to extend transversely away from the vehicle's body to intercept the light beams, together with circuitry for providing output indications dependent upon the location of light interception and which indications are representative of the vehicle thrust direction. The body center line is determined by employing targets which are mounted to body sides of the vehicle to intercept reference light beams. The targets on each side include a first slotted target which is positioned near one end of the vehicle to permit passage therethrough of the reference light beam and a second scaled target positioned rearwardly of the first target so as to intercept the light beam passed by the first target. The light source …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.