Rotary piston machine

In an energy converter including a blade assembly rotatable in a substantially cylindrical chamber defined within a housing;

• said blade assembly comprising a shaft having a generally uniform diameter along the axial length thereof, a radially extending blade carrying disc having a diameter greater than the diameter of the substantially cylindrical chamber defined by the housing, said blade carrying disc being deposed intermediate the terminal ends of said shaft, a peripheral groove formed in the cylindrical chamber wall of the housing defining said generally cylindrical chamber, said peripheral groove being generally circumferential with respect to the blade carrying disc, said blade carrying disc extending radially into said peripheral groove, at least one slot being formed axially through said blade carrying disc and terminating radially inwardly of the periphery of said disc, a blade being slidably mounted in said slot, said blade including a generally uniform thickness and a generally rectangular configuration described by two sides, two edges and two ends, the length of said blade from one end to the other end being sized to exceed the thickness of said blade carrying disc, said generally cylindrical chamber being at least partially defined by a pair of opposed faced radially extending end walls which are complementarily profiled and formed with centrally disposed recesses for receiving the terminal ends of said shaft axially projecting from either side of said blade carrying disc, the profile of each of said chamber end walls being generally sinusoidal in configuration with equal numbers of peaks and valleys and with the distance between the chamber end walls substantially equal to the length of said blade, and the axial distance between said peaks on the respective chamber and walls being substantially equal to the thickness of said blade carrying disc, the ends of said blade being positioned at a right angle to the shaft axis and engaging the profiled surfaces of said chamber end walls, the inner edge of said blade being positioned to engage the cylindrical surface of said shaft and the outer edge of said blades engaging the cylindrical wall of the housing defining said generally cylindrical chamber, said blade being caused to reciprocate in the axial direction of the shaft in response to rotation of said shaft and the sliding engagement of said blade with the profiled chamber end walls, sealing means being provided for sealing the edges of said blade with respect to the circumferential surfaces of said shaft and of said cylindrical wall defining said generally cylindrical chamber, further sealing means being provided for sealing the sides of said blade with respect to the sides of said slot formed in said blade carrying disc, and an inlet port and an outlet port communicating with the chamber zones defined on either side of said blade carrying disc.