Abstract: A gas spring suspension system is configured to replace a factory-installed leaf spring-based suspension system of an automobile. The gas spring suspension system connects to the vehicle frame using the same first and second frame mounts to which the leaf spring was originally attached. The gas spring suspension system has a linkage assembly with a first link that pivotably attaches to the first frame mount and a second link that pivotably attaches to the second frame mount. The first and second links are pivotably attached to one another. A connector portion, which can be part of the first or second link, or supported therebetween, supports the vehicle axle. A gas spring is supported by the linkage assembly and is positioned operatively between the first and second links so that as the axle moves during vehicle operation, loads are communicated to the spring, and through the linkage to the first and second frame mounts.

Abstract: A suspension system for a vehicle is shown. The suspension system may have first and second airbags stacked upon each other. By adjusting a height difference between the first and second airbags while maintaining the same collective height of the first and second airbags, the spring rate of the collective first and second airbags are changed while maintaining the same collective height of the first and second airbags.

Abstract: A fluid tank for storing a compressible fluid may have a translucent wall is disclosed. A light emitting diode (LED) may be configured to illuminate the wall. The fluid tank may comprise a tube and two end caps. The tube may be coupled to the end caps. Connecting rods disposed in the tube may be coupled to the end caps to squeeze the end caps onto the opposed ends of the tube. The LED may be disposed between one of the end portions of the tube and the end cap attached to that end portion of the tube. When the LED is illuminated, light is projected into the tube so that the tank now has a color to it.