Patent ID: 8316817

Claim:
Reciprocating piston machine comprising: a stationary housing; a rotor rotatably disposed within the stationary housing, the rotor having: a cylinder bore; a first guide groove and a second guide groove, both the first guide groove and the second guide groove extending alongside the cylinder bore; a hollow interior in fluid communication with a hollow shaft; a through passage configured to provide fluid communication between the cylinder bore and the hollow interior; a piston received within the cylinder bore and movable in the radial direction with respect to a machine axis; wherein both the first guide groove and the second guide groove extend relatively parallel to the stroking motion of the piston; a working chamber enclosed in the cylinder bore on a first side of the piston; an inlet opening and an outlet opening extending through the stationary housing and configured to alternatively communicate with the working chamber during rotor rotation; a linkage having: a radial piston rod adjustably attached to a second opposing side of the piston at a first end and rotatably coupled to an opposing second end to an axial transverse shaft, the axial transverse shaft extending in a direction relatively perpendicular to the radial piston rod; wherein the radial piston rod extends through the through passage and the transverse shaft remains disposed within the hollow interior of the rotor; a first elongated sliding element attached to a first end of the axial transverse shaft and a second elongated sliding element attached to a second opposing end of the axial transverse shaft, both the first elongated sliding element and the second elongated sliding element extending in the radial direction relative to the cylinder bore; wherein the first elongated sliding element is slidably received within the first guide groove and the second elongated sliding element is slidably received with the second guide groove; wherein both the first elongated sliding element and the second elongated sliding element move in a direction relatively parallel to the stroking motion of the piston; a first axial pin attached to the first elongated sliding element and a second axial pin attached to the second elongated sliding element; wherein both the first axial pin and the second axial pin are guided on both sides of the piston by endless guide tracks extending about the machine axis and having in circumferential direction a variable distance from the machine axis, said guide tracks controlling through the linkage a radial stroking motion of the piston between inner and outer dead points, wherein the cylinder bore and the piston are provided in the rotor mounted in the housing for rotation about the machine axis and the endless guide tracks are stationary guide tracks fixed relative to the housing, and that the linkage with the rotor and the piston are rotatable about the machine axis and the linkage is movably guided on the rotor with respect thereto in the direction of the stroking motion of the piston.