Arrangement for measuring wheel alignment and steering geometry

Details Arrangement for measuring wheel alignment and steering geometry Arrangement for measuring wheel alignment and steering geometry

1985-06-07

1987-09-01

Evans, F. L.

Optics: measuring and testing

Angle measuring or angular axial alignment

With screen

33288, G01B 11275

Patent

active

046905570

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.

REFERENCES:
patent: 3963352 (1976-06-01), Rishoud et al.
patent: 4115007 (1978-09-01), Thiele et al.
patent: 4135823 (1979-01-01), Horvallius
patent: 4466196 (1984-08-01), Woodruff
patent: 4574490 (1986-03-01), Curchod

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