Abstract: A positive displacement pump-motor-meter has a housing structure and a rotor disposed within and supported by the housing structure in a rotatable arrangement about an axis of rotation, wherein the combination of the housing structure and the rotor provides a toroidal cavity encircling the axis of rotation and having cross sectional area varying from a maximum value at the 12 o'clock position to a minimum value at the 6 o'clock position, which toroidal cavity houses a plurality of planar vanes disposed therealong in an axisymmetric arrangement about the axis of rotation and supported by the rotor member in a revolvable arrangement about respective axes of revolution, of wherein the revolving motion of each of the plurality of vanes about its respective axis of revolution is coupled to the rotating motion of the rotor about the axis of rotation in such a way that the vane revolves at an angular speed equal to one half of the angular speed of the rotor, whereby each of the plurality of planar vanes substantiall

Abstract: The invention is fluid pump which in addition to displacing fluid can be a fluid driven motor and when the fluid is compressible a compressor or expanding fluid driven motor. The pump has an annular cavity formed between its rotor and casing and around the rotor rotational axis. There is a power transfer means such as a shaft which drives the rotor in rotation when the pump is used to displace or also to compress a fluid. When the pump is used also as a motor the fluid being displaced is also the power transfer means and the rotor shaft is used for mechanical power take-off. The rotor surface at the annular cavity, the wave surface, has at least one undulation and each wave surface undulation forms with the other cavity surfaces a cavity undulation. A casing surface at the annular cavity, the face surface, has a plurality of circumferential spaced axial plane slots each with a partition pivotally extending into the annular cavity but not abutting the annular cavity walls.

Abstract: The invention is an internal combustion engine for two or four cycle mechanical power generation. The engine has an annular cavity formed between its rotor and casing and around the rotor rotational axis. The rotor surface at the annular cavity has undulation(s) and the casing surface at the annular cavity has a plurality of circumferentially spaced axial plane slots each with a partition pivotally extending into the annular cavity but not abutting the annular cavity walls and in the combustion region therein and when there is a compression region to very close proximity of the cavity walls. The partitions in the annular cavity form a plurality of circumferential spaced volume varying chambers which cyclically vary in volume with rotor rotation. The partitions are displaced in their slots by a rotor cam means outside the annular cavity with undulations allowing the continued extension of the partitions to the rotor undulant surface in the annular cavity without abutting it.

Abstract: A rotary piston pump comprises vanes mounted on shafts extending radially from a hub and travelling around an annular channel having a forwarding or pumping portion of circular cross section and a restricted sealing portion corresponding in cross section to the diametrical cross section of the vanes. Control means is provided for turning the vanes about radial axes so as to position the vanes approximately perpendicular to their direction of movement while passing through the forwarding portion of the channel and to turn them approximately 90.degree. so as to pass through the sealing portion of the channel in an edgewise position. At the ends of the forwarding portion the channel is connected respectively with inlet and outlet passageways. The control means include springs which permit the vanes to rotate in order to give way in the event that foreign bodies penetrate and have eccentrics and cam tracks, with cam rollers or cams if necessary.

Abstract: A rotatable machine for operation as a compressor or a motor. A stator rotates a rotor positioned therewithin. The rotor variably limits the radial section of an annular space or room. The rotor carries a series of blades rotatably mounted thereon and positioned within the room. The machine includes control means impelling the blades to oscillating movement synchronized with the rotation of the rotor such that the blades move themselves as a function of the angular position of the rotor and thereby divide the room into partitions, each having the shape of a segment of a crown.