An engine that has expandable cylinders receives its pressure from a steam boiler or any other expanding, external gases, and/or liquid devices. The motor or pump is made of, encased, reciprocating spheres and toroidal cavities that are located in the outer wheels allowing said balls to cam in and out, rotating the said outer wheels. The steam, gases or liquid is presented under pressure at the intake sliding type valve of the motor and the cam action of the piston (balls) creates a closed chamber which causes the chambers (cylinders) to expand and the outer wheels to turn. A sliding exhaust valve then opens up to expel the expended material (steam) aided by the balls. The balls are then cammed to the opposite side creating a seal for that chamber and the action repeats. A pressurized lubricant is introduced via the ball tubes enhancing the chamber seals. The outer wheels are surfaced to the middle block at a close tolerance to make a lubricated seal.
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