A MECHANISM

摘要

A mechanism comprising a chamber (7) defined by a spherical or part spherical internal surface, and a disk member (9) rotatable ina fixed plane diametral to the said internal surface and in sealing relation therewith, at least one vane (14) rotatable about an axis diametral to the said internal surface and said axis being inclined to said fixed plane, the disk member and the vane dividing the chamber into a plurality of working chambers (20) which vary in volume as the vane and disk member rotate, the vane being in sealing relation to the internal surface and the disk member throughout the rotary movement.