Vehicle steering and front-end alignment defect detector

Details Vehicle steering and front-end alignment defect detector Vehicle steering and front-end alignment defect detector

1981-05-18

1983-07-19

Myracle, Jerry W.

Measuring and testing

Vehicle chassis

Steering

3320313, G01M 1500

Patent

active

043936946

ABSTRACT:
An apparatus and corresponding method for detecting steering or front-end alignment defects in a vehicle, such as an automobile, having a steering wheel steerably connected to dirigible front wheels. Each side of the vehicle being tested is restrained from sideward motion by a retaining brace having a force transducer mounted therein. A roller mounted in a support floor rotates or allows the rotation of each of the front wheels of the vehicle. While the front wheels are rotated, the steering wheel of the vehicle is turned from center position through a relatively small angle of rotational to the right and then to the left (or vice versa). An angle indicating device measures the angles of steering wheel rotation. While the steering wheel is maintained momentarily at each of the respective angles of rotation, a rotating-force measuring device, such as a torque wrench, is used to measure the force exerted on the steering wheel and the force transducers, in cooperation with a readout device, are used to determine the force exerted on the respective retainers. All force values thus obtained are then mathematically compared to determine if a steering or front-end alignment defect exists in the vehicle.

REFERENCES:
patent: 2598599 (1952-05-01), Pleasance
patent: 3238771 (1966-03-01), Myrtetus et al.
patent: 3238772 (1962-12-01), Pellicciotti
patent: 3763699 (1973-10-01), Sangster
patent: 3813932 (1974-06-01), Wallace
patent: 3889527 (1975-06-01), Wallace
patent: 3897636 (1975-02-01), Leblanc
patent: 4158961 (1979-06-01), Ben-David
L. Hunter, Wheel Alignment Equals Motion Balance.

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