Torque beam, equalized pneumatic and hydraulic axle suspension
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United States of America Patent
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-
Oct 1, 1991
Grant Date -
N/A
app pub date -
Mar 19, 1990
filing date -
Mar 19, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An active, frequency damping suspension system for vehicles having a chassis and at least one axle comprises a pneumatic spring connected mechanically between the vehicle axle and the vehicle chassis to absorb vertical movements of the vehicle axle and prevent them from being transmitted to the chassis, a hydraulic shock absorber connected between the vehicle axle and the vehicle chassis to dampen the vertical movements of the vehicle axle, and a pressure accumulator in fluid communication with the air spring or in fluid communication with both the air spring and the hydraulic shock absorber for enhancing the cushioning effect of the air spring on vertical movements of the vehicle axle and enhancing the dampening effect of the shock absorber on vertical movements of the axle.
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