Rotary expansible chamber devices
Interengaging rotating members
Helical or herringbone
Inventor
active
High speed variable delivery helical screw compressor/expander a
Modular unload slide valve control assembly for a helical screw
Oil equalization system for parallel connected compressors
Screw step drive internal volume ratio varying system for helica
Vertical axis hermetic helical screw rotary compressor with disc
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