Frank L. Wells Company

Edwin E Katt

George T Vattakattu

Disclosed herein is a vehicle testing apparatus comprising a pair of brake clipers operable in response to the application of pressure fluid for applying torque in opposition to driving torque delivered by the driving wheels of a vehicle operating at a given speed, a force sensor for sensing differential in the driving and applied torque, a control for generating a signal representative of the torque differential, and a pressure regulator for maintaining the applied torque at a constant magnitude by regulating the pressure of the fluid applied to the brake calipers.

Vehicle testing apparatus

A road test simulator is provided of the type adapted to be drivingly engaged by a pair of wheels of a vehicle, such as an automobile, which wheels are spaced apart and aligned for rotation about a common axis. The road test simulator includes a first roller unit adapted to receive one of the wheels, a second roller unit spaced from the first roller unit in the axial direction and adapted to receive the other of the wheels, and structure, operable when the road test simulator is in use, for continuously impeding movement of the vehicle in the axial direction.

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Kenosha, WI, United States of America

Edwin E Katt