Land vehicles – Wheeled – Running gear
Patent
1989-09-14
1991-02-19
Bertsch, Richard A.
Land vehicles
Wheeled
Running gear
2801491, 2804051, 280704, 180 2402, B60G 500
Patent
active
049937294
ABSTRACT:
An over the highway truck or tractor suspension with traction enhancement. Air springs are provided for the rear axles of a 2.times.6 vehicle. Normally the load is evenly divided between driven and tag axles. When enhanced traction is desired, the tag axle springs are communicated with an auxiliary tank to reduce pressure in them while air under pressure is supplied to the driven axle springs to increase the pressure in them and thereby increase the portion of the load on the driven axle to provide enhanced traction.
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Bertsch Richard A.
Volvo GM Heavy Truck Corporation
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