Abstract: A rotary displacement machine has a casing (1) having a spherical interior space accommodating a rotor. The rotor is spherical and is formed by a disc-shaped partition (2) having on either side thereof pivotally vanes (3, 4). The vanes (3, 4) are connected to the partition (2) along the diameter, extend in mutally perpendicular planes and are connected to power takeoff shafts (5, 5') extending at an angle with respect to each other. The pivotal connection of the partition (2) to each vane (3, 4) is in the form of mating cylindrical projections (9, 9' ) of the partition of the vanes (3, 4). Axes (a, b) of the projections (9, 9') of the partition (2) extend mutually perpendicularly and in one and the same plane.

Abstract: An apparatus for metering fluid has a casing (1) accommodating a rotor (2) having a closed interior space. The interior space of the rotor (2) is divided by partitions (3) into measuring chambers (4) each accommodating a free piston (5) dividing the measuring chamber into a metering space (6) and a control space (7) located on either side of the piston (5). There is provided a batch controller having a variable capacity chamber (18) communicating with all control spaces which are connected in parallel with one another. Each chamber (4) has a port (10) regularly communicating through a port (8) with a metered fluid supply line and with a port (9) for discharging metered fluid.