Provided is a hydraulic orbital machine and a method of adjusting a hydraulic orbital machine comprising a first and a second lobed disk which rotate eccentrically about a rotation axis and within respective rotors; the machine is characterized by the fact that it has adjustment means designed to mutually angularly offset the angles at which, when the machine is at a standstill, the chambers defined between the lobed disks and the stator have minimum volume.

Provided is a hydraulic orbital machine and a method of adjusting a hydraulic orbital machine comprising a first and a second lobed disk which rotate eccentrically about a rotation axis and within respective rotors; the machine is characterized by the fact that it has adjustment means designed to mutually angularly offset the angles at which, when the machine is at a standstill, the chambers defined between the lobed disks and the stator have minimum volume.

A rotary fluid device including an outer housing assembly and an inner rotating arrangement adapted to rotate relative to the outer housing assembly, the outer housing assembly including a rotor housing and the inner rotating arrangement including a rotor dimensioned to rotatably fit within the rotor housing. One of the rotor and the rotor housing include lobes extending in a radial direction relative to respective inner and outer circumferential surfaces and the other of the rotor and the rotor housing includes followers and follower recesses in which the followers are moveably located. In some examples, the follower recesses are adapted such that in at least the extended condition fluid pressure at underside facing surfaces of the followers toward the follower recesses are substantially hydrostatically balanced with a fluid pressure at opposing top facing surfaces of the followers substantially exposed to the chambers. In some examples, three pressure zones may be defined between the followers and follower recesses the three pressure zones including an intermediate pressure zone and two laterally pressure zones on opposing circumferentially lateral sides of the intermediate pressure zone.

A continuously variable turbine includes a case assembly with a case body defining a chamber, a rotor assembly positioned in the chamber, and a pair of valve assemblies. The rotor assembly includes a ring piston and a rotor body positioned within the ring piston. The rotor body is connected to a shaft, and the rotor body rotates concentrically about an axis extending through the shaft while the ring piston rotates eccentrically about the axis. Each valve assembly is positioned outside of the ring piston relative to the rotor assembly and includes a valve body and a seal component attached to the valve body. Each seal component has a surface with a curvature that matches the outer curvature of the ring piston to form a continuous surface seal between the seal component and the ring piston as the ring piston rotates eccentrically about the axis. The position of the continuous surface seals in the chamber defining a first sub-chamber and a second sub-chamber between the surface seals. The case body includes an intake port and an exhaust port for each sub-chamber.

A pneumatic engine includes first and second pneumatic motors. Each motor has a stator, a rotor, and a gas flow path. The rotor is rotatably connected to the stator. The gas flow path is defined at least in part by the stator and the rotor, and extends from a gas inlet to a terminal gas outlet. The gas flow path has an expansion portion extending between the gas inlet and an intermediate gas outlet, and a compression portion extending between the intermediate gas outlet and the terminal gas outlet. The terminal gas outlet of the first pneumatic motor is fluidly connected upstream of the gas inlet of the second pneumatic motor.

A rotary drive includes a housing; a shaft rotatably mounted within the housing and rotatable about a drive axis; a passage internal the housing and extending circumferentially about the shaft; a stator vane within the passage; and a rotor vane within the passage. The stator and rotor vanes are movable between respective closed positions in which the stator and rotor vanes separate the passage into a circumferentially expanding chamber in fluid communication with an inlet in the housing and a circumferentially collapsing chamber in fluid communication with an outlet in the housing, and respective open positions in which the rotor vane is movable circumferentially past the stator vane during rotation of the shaft.

A rotary drive apparatus includes a housing having a housing hole defined therein, a cylindrical rotor being disposed in the housing hole, a working fluid passage through which a working fluid for applying a fluid pressure to one end face of the rotor flows, a motion limiting unit configured to limit motion of the rotor toward another end thereof, and an output shaft configured to extract rotary power of the rotor out of the rotary drive apparatus. A predetermined gap for the working fluid to flow therethrough is created between an outer circumferential surface of the rotor and a wall surface defining the housing hole.

A rotary drive apparatus includes a housing having a housing hole defined therein, a cylindrical rotor being disposed in the housing hole, a working fluid passage through which a working fluid for applying a fluid pressure to one end face of the rotor flows, a motion limiting unit configured to limit motion of the rotor toward another end thereof, and an output shaft configured to extract rotary power of the rotor out of the rotary drive apparatus. A predetermined gap for the working fluid to flow therethrough is created between an outer circumferential surface of the rotor and a wall surface defining the housing hole.

The present invention discloses a hydraulic style motor having a first power input housing containing a first plurality of rotary or centrifugally driven pumps and associated valves, such that the pumps are driven in a determined stacked fashion by a powered input (or drive) shaft. A second power output housing contains at least one second rotary driven pump and associated valve, the second pumps rotatably engaging a second output (driven) shaft. A pressure resistant fluid line interconnects a manifold associated with the first housing with another manifold associated with the second housing so that the pressurized fluid generated by rotation of the input pumps in the input housing is communicated to the output housing to drive the output pumps to rotate the output (driven) shaft. A return line communicates with the output housing manifold, via each of the individual pump and valve subassemblies, for redirecting flow back to an input feed to the input housing.

A pneumatic engine includes first and second pneumatic motors. Each motor has a stator, a rotor, and a gas flow path. The rotor is rotatably connected to the stator. The gas flow path is defined at least in part by the stator and the rotor, and extends from a gas inlet to a terminal gas outlet. The gas flow path has an expansion portion extending between the gas inlet and an intermediate gas outlet, and a compression portion extending between the intermediate gas outlet and the terminal gas outlet. The terminal gas outlet of the first pneumatic motor is fluidly connected upstream of the gas inlet of the second pneumatic motor.