Patent ID: 8322323

Claim:
An oscillating-piston engine, comprising: a spherical housing defining at least one guide groove therein; at least two double-armed oscillating pistons disposed in the housing; a revolving oscillation shaft, rotatable about an axis of revolution disposed at a center of the housing, wherein the revolving oscillation shaft comprises bores extending along the axis of revolution and the oscillating axis, wherein the oscillating pistons are attached to the revolving oscillation shaft rotatable about an oscillating axis perpendicular to the axis of revolution, such that the oscillating pistons, during a rotation of the revolving oscillation shaft about the axis of revolution, revolve together about the axis of revolution, and when revolving, mutually perform reciprocating oscillating movements in opposite directions about the oscillating axis; guide members attached to the pistons, wherein the guide members engage in the at least one guide groove of the housing, and serve to control the oscillating movements; and a fluid system for supply with a fluid, comprising at least one tank for the fluid, a feed opening for the fluid in the housing, and a pipe connected with the tank for supplying the fluid from the tank to the feed opening, wherein the feed opening is open towards an end of the revolving oscillation shaft; wherein each of the pistons comprises at least one channel floodable with the fluid; wherein a feed of the fluid is supplied from the tank through the feed opening, and via the bores of the revolving oscillation shaft the channel of each of the pistons is floodable with the fluid; wherein each of the pistons further comprises at least one discharge conduit configured to discharge the fluid from a respective one of the channels towards a piston surface facing an inner side of the housing so that by means of a centrifugal force generated by a rotation of the revolving oscillating shaft, a suction at the feed opening as well as a pressure in each of the discharge conduits is caused near the piston surface thus effecting an automatic fluid circulation via discharge openings to the tank.