Primary suspension for railroad car truck
AssigneeAMSTED Industries Incorporated
InventorsHarry W. Mulcahy, Dimitris Garivaltis, Stanley Karbowniczek, Horst T. Kaufhold
Life of this patent
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Abstract
A railway vehicle truck including side frames and wheel sets maintained in a substantially rectangular relationship by resilient connection means at each of the axle mounts to the side frames. The resilient means are prestressed and in equilibrium at each mounting location so as to resist yaw and lengthwise movement of the axles relative to the side frames. The resilient means provide resistance to hunting motion and yet yieldingly permit relative turning of the axle and side frame when the truck traverses a curved track.
Claims4
A railway vehicle truck comprising
- a pair of longitudinally extending and laterally spaced side frames, a pair of transversely extending and lengthwise spaced wheel sets each having a wheel axle, means for mounting said side frames on said wheel axles so that said truck assumes a normal rectangular position, said mounting means including a pair of elastomeric pads stressed in shear and disposed between said side frames and said axles on opposite sides of each of said respective axles for applying opposing forces on said respective axles to yieldingly resist yaw, longitudinal and lateral movements of axle relative to said side frame thereof while permitting turning of said axles relative to said side frames when said truck traverses curved tracks, one of said pads prestressed lengthwise in one direction and the other of said pads prestressed lengthwise in the opposite direction to create equal and opposite shear forces acting on said axle when said truck assumes a normal rectangular position.
Dependencies are inferred from the claim text.