Heavy-duty vehicle axle/suspension system
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United States of America Patent
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N/A
Issued Date -
Nov 9, 2006
app pub date -
Apr 28, 2006
filing date -
Apr 29, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An axle/suspension system for a heavy-duty vehicle, in which the vehicle has a frame, is attached to the vehicle frame via a pair of hangers, and includes an axle and a pair of suspension assemblies. Each of the suspension assemblies includes an air spring and at least one spring member. The spring member includes a first attachment portion and a second attachment portion. The first attachment portion is generally rigidly connected to the hanger via a clamped connection, and the second attachment portion is operatively connected to the axle. The spring member, connected in this manner, reduces or eliminates dock walk when a cargo transfer vehicle enters the heavy-duty vehicle, and also reduces or eliminates rebound when the cargo transfer vehicle exits the vehicle. The spring member is also capable of being tuned to a predetermined stiffness that is sufficient to control heavy-duty vehicle roll forces.
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