Abstract: A hinged joint is formed on a volumetric rotary machine with a spherical working cavity formed between a spherical rotor part and the spherical surface of the body, between a piston, which is mounted in such a way as to enable rotary oscillations relative to the rotor in the plane passing along the axis of rotation of the rotor, and a rotor, which is mounted in such a way as to enable rotation about the spherical rotor part. This solution has made it possible to increase the reliability, service life and thermal stability of machines of this type. In addition, helical channels for communication between symmetrical working chambers and channels within the rotor for connecting the working chambers to the working-medium inlet and outlet openings are formed inside the spherical rotor part. This solution has made it possible to increase the specific power of the machine.

Abstract: A positive-displacement rotary machine comprises a housing a rotor installed in the housing with the a capability of rotation, a separator installed in the housing, having a guide part with a hole for the rotor; a piston installed in the a groove of the rotor with the a capability of making rotary oscillations relative to the rotor around an axis that intersects the an axis of rotation of the rotor, having at least one slot into which the guide part of the separator enters, a sphere-like working cavity formed around the rotor, which the guide part of the separator, during interaction of the hole with the rotor, divides into chamber-forming cavities of variable cross section, each of which is divided by the piston into working chambers. There is a passage for the a working fluid that permits the working thud to bypass the minimal cross section of the chamber-forming cavity; and input and output ports of the working fluid.

Abstract: A hinged joint is formed on a volumetric rotary machine with a spherical working cavity formed between a spherical rotor part and the spherical surface of the body, between a piston, which is mounted in such a way as to enable rotary oscillations relative to the rotor in the plane passing along the axis of rotation of the rotor, and a rotor, which is mounted in such a way as to enable rotation about the spherical rotor part. This solution has made it possible to increase the reliability, service life and thermal stability of machines of this type. In addition, helical channels for communication between symmetrical working chambers and channels within the rotor for connecting the working chambers to the working-medium inlet and outlet openings are formed inside the spherical rotor part. This solution has made it possible to increase the specific power of the machine.

Abstract: A positive displacement rotary machine with a body having an internal spherical cavity, a rotor, and a ring working cavity formed by the body and the rotor. The working cavity is functionally divided into bypass and propulsion halves. A separator embodied in the form of a wobble plate is mounted in the working cavity at an angle to the rotor. A piston with a sealable through-slot for the separator passage is mounted in a slot made in the rotor. Multiple openings made through the separator in the propulsion half of the cavity make the separator transparent for the working medium flow. The openings are small enough so the separator seals the through-slot of the piston. The configuration allows for one input port and one output port on the opposite sides of the separator in the bypass half to make the supply steady.

Abstract: A positive displacement rotary machine with a body having an internal spherical working surface divided into bypass and propulsion areas, a rotor with a working rotational surface, a ring working cavity formed by the working surfaces of the body and rotor, and a C-shaped separator mounted in part of the cavity at an angle to a plane of the rotor rotation. The cavity is partitioned by the separator at the bypass area, and the working medium openings are located from opposite sides of the separator. The working surface of the rotor has at least one slot. In each slot is mounted a piston capable of sealing the working cavity, and performing rotational oscillations in a slot plane. The piston is at least in the form of a part of a disk and has at least one through-cutout for the separator passage, and can seal the through-cutout at the propulsion area.

Abstract: The invention relates to rotary machines, with nonparallel rotor and pistons axes of rotation. A spherical cavity (4) formed by a body (1) comprises a rotor (7), which is arranged therein and is provided with a through slot (21) in which a piston (8) in the form of a through-cutout (33) disk is mounted in such a way that it is enabled to perform rotational oscillatory motions. The working cavity is divided into bypass (2) and pressure (3) sections. A C-shaped separator (9) is placed in the bypass section (2) and separates the working medium input window (12) from the output window (13) thereof. In the pressure section (3), the working medium is pushed by the projecting part of the piston (8). The inventive spherical positive displacement rotary machine enables uniform flow rate throughout the cycle. The input and output windows are spaced along a shaft, thereby making it possible to develop, on the basis of said machine, multistage down-hole pumps and hydraulic drives.

Abstract: The invention relates to rotary machines provided with nonparallel axes of a rotor and pistons. The inventive positive-displacement rotary machine comprises a body, the working surface of which is embodied in the form of a part of a segment of sphere, a rotor which is provided with a working surface of revolution and which is arranged in the body in such a way that it is rotatable, a ring-shaped concentric working cavity formed by the body and the rotor, a separator which is embodied in the form of a wobble plate, is fixedly arranged in the body and divides the working cavity into two parts. The working surface of the rotor is provided with at least one slot which is embodied along the geometrical axis of rotation thereof and in which a piston in the form of a part of disk is placed in such a way that it is enabled to perform rotational oscillations in the plane thereof. Each piston is provided with a sealable through-slot for the separator passage.

Abstract: A fluid flow displacement rotary machine is provided which includes a casing including an inclined rib on an inner surface thereof, and a shaft provided coaxially with the casing such that the shaft and the casing are rotatable with respect to each other. A disk is mounted to the shaft and includes a recess that is engageable with the rib to divide the space and such that the disk rotates about the axis thereof when the shaft moves with respect to the casing. The recess only engages with the rib at first and second rib contacting portions. The first rib contacting portion is provided at an intersection of the first end face of the disk and the first side surface of the recess, and the second rib contacting portion is provided at an intersection of the second end face of the disk and the second side surface of the recess.

Abstract: The fluid-flow positive displacement rotary machine can be used as an engine, e.g., a diesel engine or internal combustion engine, as well as a pump, compressor, turbine, also in measuring equipment such as flow-meters and dosimeters; it comprises a stator and a drive rotor between which at least one chamber-defining space is formed, subdivided into working chambers by the driven rotors. The chamber-defining space is defined by the surface similar to the surface of a revolution body formed by rotating the stator together with the driven rotor about the axis of the drive rotor, with simultaneous rotation of the driven rotor around its own axis. At least one recess is made across the driven rotor perimeter, having a depth at which the bottom of the recess is disposed under the stator effective area in any position assumed by the rotor. The invention makes it possible to extend technological and performance capabilities and to increase the efficiency factor and specific power rating of the machine.