Abstract: A method and apparatus automatically fabricates a three dimensional object from individual layers of fabrication material having a predetermined configuration. Successive layers are stacked in a predetermined sequence and affixed together to form the object. The fabrication material is carried on a substrate to a stacker. At the stacker the layers are stacked together, with each layer being successively affixed to the stack of previously affixed layers, and with the substrate removed from each layer after it is affixed.

Abstract: An axle suspension system for a wheeled vehicle. This suspension system includes a trailing arm beam extending longitudinally along each side of the vehicle with each trailing arm beam connected to a resilient pivotal bushing at the forward end thereof. Each resilient pivotal bushing is mounted on a hanger attached to the vehicle frame. An air spring is attached to the rearward end of each trailing arm beam and connects its trailing arm beam to the wheeled vehicle. Each trailing arm beam has a U-shaped transverse cross-section wherein a horizontally extending wall is oppositely located relative to vertically extending walls to define a vertical facing opening in the trailing arm beam. A vehicle axle is connected to the trailing arm beams. The vehicle axle is attached to an axle thrust mounting located on the trailing arm beams and spanning the vertical facing openings thereof near the rearwardly located ends of the trailing arm beams.

Abstract: A method and apparatus automatically fabricates a three dimensional object from individual layers of fabrication material having a predetermined configuration. Successive layers are stacked in a predetermined sequence and affixed together to form the object. The fabrication material is carried on a substrate to a stacker. At the stacker the layers are stacked together, with each layer being successively affixed to the stack of previously affixed layers, and with the substrate removed from each layer after it is affixed.