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US 4,923,253 AGranted
Braking system for aircraft towing vehicle
AssigneeKrauss-Maffei Aktiengesellschaft
InventorsJuergen Pollner, Gregor Trummer, Peter Moelzer, Karl Fichtner
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AssigneeKrauss-Maffei Aktiengesellschaft
InventorsJuergen Pollner, Gregor Trummer, Peter Moelzer, Karl Fichtner
Estimating the term…
A braking system for an aircraft towing vehicle which supports the nose wheel of an aircraft in a raised position and firmly clamps it to the vehicle. The braking force generated by the front wheels of the towing vehicle is greater by about 2:1 to 8:1 than the braking force at the rear wheels. The braking system has two hydraulic circuits employing identical braking cylinders at all four wheels of the vehicle. The number of cylinders per wheel are varied and different effective lever arms are used to generate like braking forces at each side of the vehicle, and the relatively greater braking force at the front wheels, even if one of the hydraulic circuits fails. The system limits the braking force at the front and rear wheels to maximum values to prevent excessive forces from damaging the nose gear of relatively smaller aircraft. The load carried by the vehicle is hydraulically sensed by tapping into the hydraulic leveling system to increase the braking forces that are generated when towing relatively heavier aircraft which is able to withstand such greater forces.
A braking system for a towing vehicle adapted to tow another vehicle such as an aircraft, the towing vehicle having a front wheel and a rear wheel, each fitted with a brake, at each side of the vehicle, the system comprising braking means including first and second independent brake circuits for applying braking forces to each of the wheels so that the braking force applied to the front wheels exceed the braking forces applied to the rear wheels and the braking forces applied to the wheels on each side of the vehicle are equal when the first brake circuit and when the first and second brake circuits are active, the first and second brake circuits each being operatively coupled with the brakes of the front wheels at each side and a rear wheel at one side of the vehicle for activating the brakes and thereby generating braking forces at the wheels;
A braking system for towing vehicles adapted to tow another vehicle such as an aircraft, the towing vehicle having a hydraulically actuated brake for at least a front wheel and at least a rear wheel on each side of the vehicle;
Dependencies are inferred from the claim text.