Abstract: The present invention is directed to a peripherally pivoted oscillating vane machine (OVM). The OVM has been optimized for performance and efficiency. This has been accomplished by reducing loads on the drive mechanism and by employing de-phased motion of the peripherally pivoted vanes in conjunction with improved porting configurations as well as valve actuation and manufacture.

Abstract: A rotor adjusting apparatus for adjusting flank clearance between the lands of meshing first and second rotors in a positive displacement screw machine is disclosed which includes a base configured to mount proximate an end of the meshing first and second rotors in the screw machine. A locking mechanism is supported by the base and operatively configured for locking the first rotor shaft in a fixed position relative to the base. An adjusting bar is configured to attach to the second rotor shaft for rotational adjustment thereof in relation to the first rotor to establish clearance between the land flanks of the meshing first and second rotors. A measuring tool is adjustably mounted to the base permitting measurement of rotational adjustment of the adjusting bar. A second locking mechanism is supported by the base and operatively configured for locking the adjustment bar in a fixed position in relation to the base and, thereby, the second rotor in relation to the first rotor.

Abstract: A rotary screw compressor system is provided wherein the base plate connecting the prime mover to the compressor integrates the drive transmission with the lubricating fluid flow path between lubricating circuit components. Each of those circuit components and the compressor is removably mounted to the base plate via segregating housings. The compressor is mounted to the base plate with drive shaft and working fluid outlet on the same side. A pre-separation chamber is included within the base plate to facilitate removal of lubricant from the compressed working fluid prior to passage of the working fluid through the separator component. A double seal arrangement is provided about the connection of the prime mover drive shaft to the base plate. That seal arrangement includes a lubricant collection chamber between the seals, and control air is used to recycle lubricant from that chamber to the air inlet of the compressor.