VANE-TYPE ROTARY MACHINE WITH REDUCED WEAR AND FRICTION LOSS

摘要

A fluid-operated vane type rotary machine having a stator, a rotor installed in the stator, and a plurality of vanes slidingly installed in radial slots of the rotor. In order to reduce friction between the tips of the vanes and the inner surface of the machine chamber formed in the stator, the tips are provided with rollers or roller bearings which have a rolling contact with the inner surface of the machine chamber. The machine may be provided with a seal member, which also may have a roller or bearing. In both cases the roller or bearing is caulked on the end face of the vane and projects only for an amount sufficient for reliable rolling contact with the stator.