Apparatus and method for measuring rear wheel toe with respect t

Details Apparatus and method for measuring rear wheel toe with respect t Apparatus and method for measuring rear wheel toe with respect t

1980-09-04

1982-08-17

Martin, Jr., William D.

Geometrical instruments

Straight-line light ray type

Process

3320318, 33288, 356155, G01B 11275

Patent

active

043442340

ABSTRACT:
An electronic aligner head is mounted on one rear wheel of a vehicle. The aligner head projects a light beam toward the front wheel on the same side of the vehicle. A centering gage is adapted to contact lower points on the inner flanges of each of the rear wheel rims. A lateral arm is connected to a housing on the centering gage. The lateral arm extends past the one rear wheel and carries a centering gage head on the free end. The arm is adjustable in length to place the centering gage head at the same lateral distance from the chassis centerline as the light beam projector. The centering gage is removed from the position between the rear wheel rims and placed in a similar position between the front wheel rims. The centering gage head is configured to either reflect the beam back to a light beam detector on the aligner head or alternatively to direct the beam to a detector in the gage head. The detector provides a signal indicative of the toe of the one rear wheel.

REFERENCES:
patent: 2401715 (1946-06-01), Wilkerson
patent: 2575194 (1951-11-01), Smith
patent: 3151396 (1954-10-01), Junkins
patent: 3417479 (1968-12-01), Hirmann
patent: 3983635 (1976-10-01), Jarman
patent: 4095902 (1978-06-01), Florer et al.
patent: 4159574 (1979-07-01), Samuelsson et al.
Hunter, Electron-A-Line Brochure, pp. 2, 3 and 5, Oct. 1976.

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