Importance

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Abstract

A air spring suspension system includes ground-engaging wheels mounted on an axle housing which is secured to trailing arms pivotally mounted at one end to the frame of the vehicle for vertical swinging movement relative thereto. The other ends of the trailing arms are connected by a transverse beam which extends between them. The beam is connected with the trailing arms by bushed articulating joints which permit the trailing arms to move with respect to each other. A stiffener arm is mounted at one end to each trailing arm by a bushed connection, and rigidly secured at another end to the transverse beam near to where the transverse beam is connected to the trailing arm. The bushed connection between the stiffener arm and the trailing arm provides limited articulation, and resists roll forces imparted to the suspension when the vehicle turns to provide increased stiffness at low rates of roll.

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First Claim