Inventor
SCHAEFER DONALD D
US6 patents
Patents
6 patentsUS4545742AOct 8, 1985
Vertical axis hermetic helical screw rotary compressor with discharge gas oil mist eliminator and dual transfer tube manifold for supplying liquid refrigerant and refrigerant vapor to the compression area
DUNHAM BUSH INC105 citations94
US4383802AMay 17, 1983
Oil equalization system for parallel connected compressors
DUNHAM BUSH INC67 citations92
US4508491AApr 2, 1985
Modular unload slide valve control assembly for a helical screw rotary compressor
DUNHAM BUSH INC31 citations91
US4477233AOct 16, 1984
Vertical axis hermetic helical screw rotary compressor with discharge gas oil mist eliminator and dual transfer tube manifold for supplying liquid refrigerant and refrigerant vapor to the compression area
DUNHAM BUSH INC32 citations91
US4220197ASep 2, 1980
High speed variable delivery helical screw compressor/expander automotive air conditioning and waste heat energy _recovery system
DUNHAM BUSH INC50 citations88
US4909716AMar 20, 1990
Screw step drive internal volume ratio varying system for helical screw rotary compressor
DUNHAM BUSH INC25 citations86