7. A fluid motor or engine comprising in combination a plurality of spaced plane rotably mounted disks, and means for admitting or discharging the fluid at the center and periphery of said disks, as set forth.
8. A fluid propelled machine comprising in combination a plurality of spaced plane rotably mounted disks, an enclosing casing and ports or passages or inlet and outlet at the center and periphery of the casing, as set forth.
9. A fluid motor or engine comprising in combination a runner composed of a plurality of disks rotably mounted with intervening spaces, and a casing enclosing the runner provided with ports or passages of inlet and outlet at the axis and periphery of the runner respectively, as set forth.
10. A fluid motor or engine comprising in combination a runner composed of a plurality of disks mounted at intervals and formed with openings near their centers, and means for admitting a liquid to or discharging it from the spaces between the disks and located respectively at the center and periphery of the same.
11. A thermo-dynamic converter comprising a shaft, a plurality of disks spaced thereon, an inlet for the motive fluid at the periphery of the disks and tangential thereto, and an outlet at the central portions of the same, as set forth.
