Abstract: A nutating disc compressor includes a disc having cone-shaped surfaces and a centrally disposed sphere positioned within a symmetrical, a spherical-segment shaped chamber which is adapted to contain the disc and has a central bearing to movably engage the sphere and to allow the disc to nutate within the chamber. The compressor is driven by an external source of power, preferably through the drive shaft. Preferably, the compressor contains a plurality of stages which are linked together.

Abstract: A nutating internal combustion engine is disclosed including a disc having cone-shaped surfaces and a centrally disposed sphere positioned within a symmetrical, spherical-segment shaped chamber which is adapted to contain the disc and has a central bearing to movably engage the sphere and to allow the disc to nutate within the chamber to turn drive shafts. Preferably, the engine operates on a four cycle principle and combines the intake and compression chambers into a single chamber and the combustion and exhaust chambers into a single chamber to fire every 180 degrees.