| Patents for F04C 28 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids (4,928) |
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| 01/30/1979 | CA1047463A1 Control system for helical screw compressor |
| 01/09/1979 | CA1046031A1 Screw compressor control means |
| 01/02/1979 | US4132512 Rotary sliding vane compressor with magnetic vane retractor |
| 10/17/1978 | CA1040445A1 Heat pump with high efficiency reversible helical screw rotary compressor |
| 10/10/1978 | US4119392 Screw compressor with axially displaceable motor |
| 08/01/1978 | US4103506 Method and arrangement for controlling the operation of a cooling system in an automotive vehicle |
| 06/13/1978 | US4094617 Automotive air conditioner compressor |
| 05/02/1978 | US4087208 Method for compressing mixed gas consisting of combustible gas and air |
| 04/25/1978 | US4086072 Air source heat pump with multiple slide rotary screw compressor/expander |
| 04/25/1978 | US4086041 Rotary compressor comprising improved rotor lubrication system |
| 02/28/1978 | US4076461 Feedback control system for helical screw rotary compressors |
| 02/21/1978 | US4074957 Screw compressors |
| 01/17/1978 | US4068981 Blade-type rotary compressor with full unloading and oil sealed interfaces |
| 01/17/1978 | US4068980 Compressor startup control |
| 12/20/1977 | US4063855 Compressor capacity and lubrication control system |
| 11/29/1977 | US4060343 Capacity control for rotary compressor |
| 11/22/1977 | US4058988 Heat pump system with high efficiency reversible helical screw rotary compressor |
| 10/04/1977 | US4052135 Control system for helical screw compressor |
| 09/27/1977 | US4050263 Arrangement for controlling the operation of a cooling system in an automotive vehicle |
| 08/23/1977 | US4043704 Double-acting rotary expansible chamber pump adaptable to series or parallel operation |
| 08/16/1977 | US4042310 Screw compressor control means |
| 06/28/1977 | USRE29283 Undercompression and overcompression free helical screw rotary compressor |
| 06/07/1977 | US4028016 Rotary displacement compressor with capacity control |
| 05/24/1977 | US4025244 Rotary compressor of liquid-cooled type provided with means for adjusting amount of liquid and volume of gas |
| 02/01/1977 | US4005949 Variable capacity rotary screw compressor |
| 11/02/1976 | US3989413 Gas compressor unloading means |
| 06/08/1976 | US3961862 Compressor control system |
| 02/03/1976 | US3936239 Undercompression and overcompression free helical screw rotary compressor |