Vehicle spring suspension arrangement
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United States of America Patent
Stats
-
Jan 20, 1987
Grant Date -
N/A
app pub date -
Feb 16, 1984
filing date -
Feb 17, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Cited Art Landscape
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