Abstract: An isolator for use in a suspension system includes a front shaft and a rear shaft. A front spring arm and a front transitional arm are mounted to the front shaft. A rear spring arm and a rear transitional arm are mounted to the rear shaft. A resilient member is mounted between the front and rear transitional arms. As forces are applied to the front and rear link arms, the front and rear shafts rotate causing the front and rear transitional arms to rotate. As the front and rear transitional arms rotate, the resilient member is compressed and expanded accordingly.

Abstract: A novel pneumatic isolator stabilizing assembly is provided for use with a tow vehicle and a trailer for improving ride characteristics for a driver and passengers and for minimizing the possibility of damage to the tow vehicle and the trailer. The assembly includes a frame, structure for attaching the frame to the tow vehicle, structure for attaching the frame to the trailer, and an air spring for providing a cushion between the tow vehicle and the trailer when traveling over the roads. In one embodiment, the air spring is offset from the attachment point of the frame to the trailer and in another embodiment, the air spring is generally vertically aligned with this attachment point. The frame in each embodiment includes a first subassembly fixed relative to the trailer and a second subassembly fixed relative to the tow vehicle. The subassemblies are connected together such that they can move relative to each other.