Geometrical instruments – Gauge – Wheel
Patent
1982-03-01
1984-02-14
Stearns, Richard R.
Geometrical instruments
Gauge
Wheel
33DIG13, G01B 7315
Patent
active
044308027
ABSTRACT:
Wheel alignment testing apparatus is shown for use with the wheels of a motor vehicle. This apparatus is adapted for use with the racks of an alignment machine. A remote monitoring console would be provided with gauges for recording the reading of caster, camber, toe and turning radius angles of both front wheels of the vehicle. The apparatus includes two units, one unit for each front wheel. Each unit has a stationary base and a wheel-supporting platform or turntable with front and rear rails for centering the center of the wheel on the vertical turning axis of the turntable. A cross-bar transducer is supported from the turntable, and it is provided with electrical strain gauges at both the front and rear of the wheel for sensing either a positive or negative caster angle, as well as at both the left and right sides of the wheel for sensing either a positive or negative camber angle. In order to measure the toe angle of the wheel, a light transmitter means is mounted on either the base or the turntable, and a cooperating optical receiving means is mounted on the opposite member so that the angular movement of the turntable relative to the base will be sensed and displayed at the remote monitoring console as the toe angle of the wheel. The turning radius of the two front wheels relative to each other may also be measured readily.
REFERENCES:
patent: 2020614 (1935-11-01), Miller
patent: 2025051 (1935-12-01), Haucke
patent: 2045108 (1936-06-01), Smith
patent: 2087909 (1937-07-01), Haucke
patent: 2499033 (1950-02-01), Oberholtzer
patent: 2676415 (1954-04-01), Love
patent: 4110913 (1978-09-01), Dick
patent: 4167816 (1979-09-01), Jarman et al.
Caslin Richard L.
Rodrigues Daniel T.
Stearns Richard R.
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