Abstract: A vertical free fall system is proposed where a capsule with human beings is raised pneumatically in a tube, then is released to fall down in a free fall mode inside of the tube. The capsule has some means of controlling the air flow passing across the capsule so that the rate of deceleration is controlled. In this way the capsule is able to free fall then to be decelerated to the bottom of the tube. Also the tube has means to control the flowing air by this being possible to control the deceleration of the said capsule.

Abstract: A new type of wheel for tube transport is proposed characterized by the fact that is made of a rigid polymer material like high impact nylon which has uniformly distributed in it a solid lubricant like Teflon, MOS2 or graphite, by this reducing the hysteresis, fatigue in the mass and decreasing the rolling coefficient when rolling on a curved profile; also in the said polymer material existing fibres for reinforcing and static dissipation.

Abstract: A fifth wheel bearing plate assembly is proposed where a recess is made in the original standard fifth wheel bearing plate, an antifriction plastic liner is placed in this recess, the liner being secured in working position by retaining ears and trapezoidal retaining blocks, the retaining ears not affecting the operation of the fifth wheel, the liner being raised in reference with the original surface of the fifth wheel bearing plate.

Abstract: The invention relates to a roller coaster system having a tubular track which includes linear and spiral guide track sections. The track sections are formed of circular cross-sectional members. The system includes at least a passenger vehicle for travelling in the tubular track. The vehicle includes a plurality of wheels at both ends of the vehicle for engaging the interior surface of the tubular track. The system includes a chain conveyor provided at an end of the tubular track for introducing the vehicle into the tubular track and a pneumatic propulsion unit, arranging adjacent to the chain conveyor, for propelling the vehicle after the vehicle has been introduced into the tubular track.

Abstract: Pressure propulsion system and process for pneumatic pipeline transport using containers which, in aim to eliminate flap-valves or the like, is using only an open ended at both ends continuous tubular structure/pipeline inside of which the wheeled containers are pressed/introduced bumper to bumper by a chain or other pushing mechanism and also air is injected via only one orifice or manifold into the said continuous pipeline at a certain distance downstream from the said chain or pushing mechanism making possible the pneumatic propulsion of the said containers by the compressed air along the continuous tubular structure/pipeline.