| Patents for F04C 23 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids (6,201) |
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| 12/11/1984 | US4487029 Air conditioning system for a vehicle |
| 12/04/1984 | US4486668 Alternator with vacuum pump |
| 11/27/1984 | US4484457 Liquid-ring vacuum pump preceded by a precompressor |
| 11/27/1984 | CA1178563A1 Oil equalization system for parallel connected compressors |
| 11/20/1984 | CA1178255A1 Gas compressor of the scroll type having reduced starting torque |
| 10/25/1984 | WO1984004137A1 Compressor |
| 10/09/1984 | US4475360 Refrigeration system incorporating scroll type compressor |
| 09/25/1984 | US4473343 Bearing device for scroll-type compressor |
| 09/11/1984 | US4470380 Charging and distributing device for two-stroke engine |
| 09/04/1984 | CA1173805A1 Compressor |
| 08/22/1984 | EP0116356A1 Rotary piston engine |
| 08/07/1984 | US4463554 Method of generating gas pressure in an internal combustion engine, and apparatus for carrying out this method |
| 07/31/1984 | US4462772 Oil feeding device for scroll fluid apparatus |
| 07/17/1984 | US4460319 Two-stage rotary compressor |
| 07/03/1984 | US4457671 Hermetic type rotary compressor with silencer means |
| 06/05/1984 | US4452570 Multiple cylinder rotary compressor |
| 03/20/1984 | US4437821 Shaft seal for pump means |
| 03/06/1984 | US4435136 Orbiting piston type fluid displacement apparatus with shaft bearing and seal mechanisms |
| 02/14/1984 | US4431388 Controlled suction unloading in a scroll compressor |
| 02/14/1984 | US4431380 Scroll compressor with controlled suction unloading using coupling means |
| 12/21/1983 | EP0096668A1 A gear box for a compressor plant |
| 12/13/1983 | US4420293 Liquid cooled compressor with improved liquid separation |
| 12/07/1983 | EP0095508A1 Charging and distributing device for two-stroke engine |
| 11/15/1983 | US4415318 Rolling thrust bearing for use in a scroll machine |
| 11/08/1983 | US4413959 Scroll machine with flex member pivoted swing link |
| 10/04/1983 | US4407641 Electrically-driven rotary vane pump |
| 09/20/1983 | CA1153997A1 Hermetically sealed compressor suction tube and method of assembly |
| 09/14/1983 | EP0088226A2 Method of operating a liquid ring vacuum pump |
| 09/13/1983 | US4403920 Device for regulating the output quantity of a compressed medium |
| 09/07/1983 | EP0087770A1 Variable-displacement rotary fluid compressor and air conditioning system using the compressor |
| 08/24/1983 | EP0032144B1 Compressor for internal combustion engines |
| 08/17/1983 | EP0085889A1 Rotary piston machine having two or more stages |
| 08/17/1983 | EP0085721A1 Device for driving vacuum pump |
| 08/02/1983 | US4396364 Scroll fluid apparatus with crankshaft bearing located in orbiting pin force plane |
| 07/26/1983 | US4395205 Mechanically actuated tip seals for scroll apparatus and scroll apparatus embodying the same |
| 06/22/1983 | EP0081659A1 Pump unit driven by an electric motor |
| 06/21/1983 | US4389171 Gas compressor of the scroll type having reduced starting torque |
| 06/09/1983 | WO1983001985A1 Charging and distributing device for two-stroke engine |
| 05/31/1983 | US4385868 Systems for evacuating process fluids having condensable and incondensable components |
| 05/17/1983 | US4383802 Oil equalization system for parallel connected compressors |
| 05/10/1983 | US4382370 Refrigerating system using scroll type compressor |
| 04/28/1983 | WO1983001491A1 Rotary piston compressors and expanders |
| 04/20/1983 | EP0077212A1 Pulley mechanism for fluid displacement apparatus |
| 03/03/1983 | WO1983000668A1 Device for driving vacuum pump |
| 02/15/1983 | US4373866 Process to control the delivery of a single screw compressor |
| 12/28/1982 | US4365941 Scroll compressor provided with means for pressing an orbiting scroll member against a stationary scroll member and self-cooling means |
| 11/03/1982 | EP0063656A1 An air/oil separator and oil reservoir assembly |
| 08/25/1982 | EP0058610A1 Method and installation for producing a high vacuum using a single-stage liquid-ring pump |
| 08/19/1982 | WO1982002739A1 Mechanically actuated tip seals for scroll apparatus and scroll apparatus embodying the same |
| 08/17/1982 | CA1129833A1 Liquid ring pump |
| 06/22/1982 | CA1126043A1 Air conditioning system employing dual cycle |
| 05/11/1982 | US4328684 Screw compressor-expander cryogenic system with magnetic coupling |
| 05/05/1982 | EP0050770A1 Compressor unit enclosed in a housing |
| 04/28/1982 | EP0050337A1 Sound absorbing arrangement for compressed air producing devices |
| 03/09/1982 | CA1119569A1 Liquid ring compressor or vacuum pump |
| 02/16/1982 | US4315717 Evacuation system with precondenser |
| 01/27/1982 | EP0044530A1 Electric pumping aggregate with sliding vane and oil sealing |
| 11/24/1981 | US4302160 Silently operating fluid pump unit |
| 11/11/1981 | EP0039622A1 Improvements in or relating to fluid displacement apparatus |
| 10/20/1981 | US4295802 Vapor control system |
| 10/20/1981 | US4295794 Selective mode multi-stage vacuum pump |
| 06/24/1981 | EP0030636A2 Screw compressor-expander cryogenic system with magnetic coupling |
| 06/16/1981 | US4273515 Liquid ring pump |
| 05/19/1981 | US4268230 Gas ballast for oil sealed mechanical vacuum vane pump |
| 05/05/1981 | US4265603 Refrigerant compressor for air conditioning of vehicles |
| 04/07/1981 | US4260402 Housing means for defining air/oil separator and oil reservoir assembly |
| 03/24/1981 | US4257749 Liquid ring compressor or vacuum pump |
| 02/05/1981 | WO1981000278A1 Compressor for internal combustion engines |
| 12/30/1980 | US4241591 Air conditioning system employing dual cycle |
| 12/23/1980 | US4240774 Hermetically sealed compressor suction tube and method of assembly |
| 12/16/1980 | US4239466 Rotary machine with adjustable means for its eccentric rotor |
| 11/25/1980 | US4235572 Rotary displacement pump with intake through a first sealing slide |
| 09/02/1980 | US4220197 High speed variable delivery helical screw compressor/expander automotive air conditioning and waste heat energy _recovery system |
| 07/22/1980 | CA1081979A1 Integrated multi-unit refrigeration motor-compressor assembly |
| 07/08/1980 | US4211093 Vapor cycle cooling system |
| 07/01/1980 | US4209998 Air source heat pump with displacement doubling through multiple slide rotary screw compressor/expander unit |
| 06/25/1980 | EP0012544A1 Liquid ring pump |
| 05/27/1980 | US4204815 Cartridge rotary vane pump |
| 04/02/1980 | EP0009213A2 Liquid ring compressor or vacuum pump arrangement |
| 03/04/1980 | CA1073023A1 Scroll-type apparatus with hydrodynamic thrust bearing |
| 02/12/1980 | US4187693 Closed chamber rotary vane gas cycle cooling system |
| 02/12/1980 | US4187692 Liquid cooled rotary vane air cycle machine |
| 12/18/1979 | US4179248 Oil equalization system for parallel connected hermetic helical screw compressor units |
| 10/17/1979 | EP0004609A2 Screw compressor-expander cryogenic system |
| 06/26/1979 | CA1057251A1 Motor-driven liquid-ring pump including a liquid separator |
| 10/31/1978 | US4123201 Modular vacuum pump assembly |
| 09/05/1978 | CA1037925A1 Scroll-type positive fluid displacement apparatus |
| 08/08/1978 | US4105374 Integrated multi-unit refrigeration motor-compressor assembly |
| 05/23/1978 | US4090815 High vacuum pump |
| 05/09/1978 | US4088426 Sliding vane type of compressor-expander having differential eccentricity feature |
| 05/02/1978 | US4087208 Method for compressing mixed gas consisting of combustible gas and air |
| 04/11/1978 | US4083659 Motor-driven liquid-ring pump including a liquid separator |
| 02/28/1978 | US4076468 Multi-stage screw compressor interconnected via communication channel in common end plate |
| 12/27/1977 | US4065279 Scroll-type apparatus with hydrodynamic thrust bearing |
| 11/22/1977 | US4059368 Gas compressor unloading means |
| 11/08/1977 | US4057368 Base frame construction for a liquid ring compressor set |
| 08/30/1977 | USRE29378 Leakage prevention |
| 01/25/1977 | US4004864 Method for modifying a compressing apparatus unit |
| 11/02/1976 | US3989415 Silencing housing for a machine plant |
| 07/06/1976 | US3967466 Air conditioning system having super-saturation for reduced driving requirement |