Land vehicles – Wheeled – Running gear
Patent
1984-02-16
1987-01-20
Bennett, Henry
Land vehicles
Wheeled
Running gear
180 2402, 280718, B60G 500
Patent
active
046376275
ABSTRACT:
A vehicle such as a 6.times.2 tractor having at least three axles is provided with a novel leaf spring suspension (1) for its middle axle. When the load, imposed on the chassis by a semi-trailer, exceeds a predetermined threshold, the free, rear, end of the leaf spring (1) engages the under-surface of the upper portion of a slipper bracket (4) attached to the chassis, and the middle axle takes a proportion of the load. With loads below the threshold, the free end drops through a vertical "air gap" and is held by a lower supporting arm on the slipper bracket, the middle axle being unloaded. The rear, driving, axle is thus more heavily loaded whenever the vehicle is part-laden, ensuring greater traction.
REFERENCES:
patent: 2361323 (1944-10-01), Seghers
patent: 2864454 (1958-12-01), LaBelle
patent: 3257124 (1966-06-01), Mendez
Translation of French Patent Appln. No. 2,007,105, "Suspension System for Motor Vehicles, In Particular Three Axle Vehicles".
Bennett Henry
Leyland Vehicles Limited
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