Leaf spring lift axle suspension system
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United States of America Patent
Stats
-
Mar 12, 1985
Grant Date -
N/A
app pub date -
May 16, 1983
filing date -
May 16, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An upwardly biasing back-to-back, quarter-elliptic, diverging pair of leaf springs are employed as the lifting mechanism in a lift axle suspension system for wheeled vehicles. The springs normally bias the lift axle off of the road surface. By inflation of air bags, the wheels are lowered into engagement with the road surface against the normal upward bias of the leaf springs. Release of the air automatically retracts the wheels to their riding, lift position.
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