Road-railer suspension system having a spring lift and a stabilizer bar

A vehicle suspension system for use with a vehicle having a frame and an axle comprising:

• a pair of parallel and spaced apart parallelogram means for at least partially stabilizing the axle relative to the frame and adapted to extend between the axle and the frame;
• each parallelogram means including a hanger bracket adapted to depend from the frame, a control arm having a first end and a second end, a first pivot means for mounting the first end of the control arm to the hanger bracket, an axle seat including an axle seat weldment, a second pivot means for pivotally attaching said second end of the control arm to the axle seat weldment, a torque arm having a first end and a second end, a third pivot means for pivotally attaching the second end of the torque arm to the axle seat, and fourth pivot means for pivotally attaching the first end of the torque arm to the hanger bracket;
• spring means for resiliently controlling the vertical movement of the axle relative to the frame adapted to extend between the frame and the axle;
• a stabilizer bar having a first end and a second end mounted between said pair of parallelogram means;
• and
• a pair of axle lift means for moving the axle between a first tire-wheel assembly ground engaging position and a non-ground engaging position.

A vehicle suspension system for use with a vehicle having a frame and an axle comprising:

• a pair of parallel and spaced apart parallelogram means for at least partially stabilizing the axle relative to the frame and adapted to extend between the axle and the frame;
• spring means for resiliently controlling the vertical movement of the axle relative to the frame adapted to extend between the frame and the axle;
• a stabilizer bar having a first end and a second end mounted between said pair of parallelogram means;
• a pair of axle lift means for moving the axle between a first tire-wheel assembly ground engaging position and a non-ground engaging position;
• and
• each axle lift means is formed with a force plate rigidly attached to the frame, a spring cup, a coil spring having a first end and a second end, the first end of the coil spring bearing against said force plate and the second end of the coil spring bearing against said spring cup, and a lift bar attached to said spring cup such that said coil spring is adapted to move an axle between the tire-wheel assembly ground engaging and non-ground engaging positions.

A vehicle suspension system for use with a vehicle having a frame and an axle comprising:

• a pair of parallel and spaced apart parallelogram means for at least partially stabilizing the axle relative to the frame and adapted to extend between the vehicle frame and the axle;
• each of the parallelogram means including a hanger bracket adapted to depend from the frame, a control arm having a first end and a second end, a first pivot means for mounting the first end of the control arm to the hanger bracket, an axle seat including an axle seat weldment, second pivot means for pivotally attaching said second end of the control arm to the axle seat weldment, a torque arm having a first end and a second end, a third pivot means for pivotally attaching the second end of each torque arm to an axle seat and fourth pivot means for pivotally attaching the first end of the torque arm to the hanger bracket;
• a pair of spring means for resiliently controlling the vertical movement of the axle relative to the frame adapted to extend between the frame and the axle;
• and
• axle lift means for moving the axle between a tire-wheel assembly ground engaging position and a non-ground engaging position.