Measuring and testing – Vehicle chassis – Steering
Reexamination Certificate
2005-08-08
2009-02-24
McCall, Eric S (Department: 2855)
Measuring and testing
Vehicle chassis
Steering
C073S123000
Reexamination Certificate
active
07493805
ABSTRACT:
An apparatus for testing the brakes, wheel alignment, suspension, transmission, and engine of motorized wheeled vehicles, includes a dynamometer for self-calibration. A platform supports a road vehicle to be tested. Two or four pairs of short high-inertia rollers are revolvably supported adjacent to the platform, and positioned to individually support either the front wheels or the back wheels of the vehicle. The rollers are drivable by a stationary vehicle resting thereon, each pair of high-inertia rollers supporting one vehicle wheel. A floating roller contacts the wheel to detect side forces. Sensors are connected to the rollers and a computer for data processing, display and recording is connected to the sensors. Speed of the rollers is monitored by an encoder having a resolution of at least 1000 pulses/sec. A preferred embodiment of the apparatus includes electric motors which can be connected to drive the rollers.
REFERENCES:
patent: 3899916 (1975-08-01), Cline
patent: 3965731 (1976-06-01), Asmus
patent: 4158961 (1979-06-01), Ben-David
patent: 5973274 (1999-10-01), Zarchy
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