Patent ID: 7040631
Filing Date: 2006-05-09
Classification: B60G

Abstract:
1. A suspension system for a vehicle having a body and at least one pair of forward wheel assemblies and one pair of rearward wheel assemblies, each wheel assembly including at least one wheel, the suspension system including: a suspension arm for each wheel assembly providing at least partial location of the respective wheel assembly, the suspension arm of each forward wheel assembly being pivotally mounted to the vehicle body at a pivot position rearward of an axle line of the respective forward wheel assemblies, the suspension arm of each rearward wheel assembly being pivotally mounted to the vehicle body at a pivot position forward of an axle line of the respective rearward wheel assemblies; at least one lever arm moving in conjunction with and extending radially from the pivot position of each said suspension arm; wherein at each side of the vehicle, a ram assembly is located between the lever arms of the respective forward and rearward wheel assemblies, each ram assembly including at least a first and second variable volume fluid chamber, each fluid chamber being in fluid communication with a fluid chamber of an opposing ram assembly provided on an opposing side of the vehicle, such that there is fluid flow between the chambers of the ram assemblies during heave motion of the vehicle, there is little to no fluid flow between the chambers of the ram assemblies during roll motions, and there is an at least substantially longitudinal motion of the ram assemblies with little to no flow of fluid between the chambers of the ram assemblies during cross axle articulation motion of the wheel assemblies.