| 摘要 |
<p>A rotary apparatus wherein a rotor is movable within a cylindrical housing. The rotor is formed by a cylinderlike drum with projecting radial vanes. The drum is supported by a crank mechanism which includes a first crank eccentrically rotatable about a first crankshaft, and a second crank eccentrically rotatable about a second crankshaft, the second crankshaft being rotatable about the first crank. The drum is disposed with its central axis aligned with and rotatably supported on the second crank. The drum mounts thereon three axially projecting pins which define the corners of an equilateral triangle which has its center intersected by the axis of the drum. The pins cooperate with four control forks which are fixed relative to the cylindrical housing and project radially inwardly. The control forks define radially inwardly opening slots which are disposed for intermittent engagement with the pins to control the radial displacement of the pins, and hence the rotation of the rotor, so that the axis of the drum defines a four-pointed star-shaped hypocycloidal path as the rotor undergoes its combined orbital and rotational movement within the cylindrical housing.</p> |
