| Patents for F04C 19 - Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids (784) |
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| 05/20/1987 | CN86203878U Circulating chemical process pump |
| 04/07/1987 | US4655688 Control for liquid ring vacuum pumps |
| 01/27/1987 | CA1217173A1 Liquid ring vacuum pump for gaseous media |
| 01/20/1987 | US4637780 Water ring vacuum pump having adjustable part plates and a hollow impeller |
| 01/15/1987 | DE3525136A1 Principle and system for the isothermic compression and isothermic expansion of gases and vapours |
| 01/06/1987 | US4634348 Liquid ring compressor having a passageway in discharge port for introducing air |
| 12/30/1986 | EP0206556A2 Liquid ring compressors |
| 12/10/1986 | CN85104468A 泵 Pump |
| 11/04/1986 | CA1213572A1 Liquid-ring compressor for gases |
| 10/22/1986 | EP0198142A1 Process and apparatus for recuperating hydrocarbon vapours |
| 09/23/1986 | US4613283 Liquid ring compressors |
| 09/09/1986 | US4610602 Rotary gas compressor |
| 06/11/1986 | EP0183813A1 Compressor unit with liquid ring. |
| 05/13/1986 | US4588362 Reversible unidirectional flow rotary pump |
| 04/30/1986 | EP0179311A1 Liquid-ring compressor |
| 03/19/1986 | EP0174454A2 Installation for the minimalisation of cooling liquid consumption, especially for liquid ring vacuum pumps or similar pumps |
| 02/19/1986 | EP0171656A1 Liquid ring compressor |
| 01/29/1986 | EP0169336A1 Control and actuation system, especially for water ring vacuum pumps |
| 01/21/1986 | US4565498 Rotary gas compressor |
| 01/15/1986 | EP0168138A1 Water ring vacuum pump |
| 01/03/1986 | WO1986000117A1 Compressor unit with liquid ring |
| 11/05/1985 | US4551070 Noise control for conically ported liquid ring pumps |
| 10/09/1985 | EP0156978A1 Liquid ring compressor or vacuum pump with an integrated electric motor |
| 10/08/1985 | US4545730 Liquid ring vacuum pump for gaseous media |
| 09/25/1985 | EP0155419A2 Noise control for conically ported liquid ring pumps |
| 07/10/1985 | EP0148069A2 Vacuum pump installations supplied by a cooling liquid under constant pressure |
| 06/18/1985 | US4523893 Liquid ring pump |
| 06/11/1985 | US4522560 Liquid-ring compressor for gases |
| 06/04/1985 | US4521161 Noise control for conically ported liquid ring pumps |
| 05/15/1985 | EP0141503A1 Reversible unidirectional flow rotary pump |
| 04/24/1985 | EP0138310A1 Liquid ring pump with conical or cylindrical port member |
| 04/24/1985 | EP0138182A2 Liquid ring pump |
| 03/14/1985 | WO1985001086A1 Reversible unidirectional flow rotary pump |
| 02/12/1985 | US4498844 Liquid ring pump with conical or cylindrical port member |
| 11/27/1984 | US4484457 Liquid-ring vacuum pump preceded by a precompressor |
| 07/25/1984 | EP0033726B1 Two stage liquid ring pump |
| 06/27/1984 | EP0111653A2 A liquid ring pump |
| 04/17/1984 | US4443158 Liquid ring pump with a control disk arranged between the impeller housing and the cover |
| 02/21/1984 | US4432314 Internal combustion engine |
| 12/27/1983 | US4422832 Liquid ring pump with vanes in liquid ring |
| 10/05/1983 | EP0090208A2 Liquid ring compressor for gases |
| 09/14/1983 | EP0088226A2 Method of operating a liquid ring vacuum pump |
| 07/12/1983 | US4392783 Liquid ring pump employing discharged pumping liquid for discharge port control |
| 05/10/1983 | CA1146132A1 Silencer-separator with internal trap for liquid seal blowers or the like |
| 02/16/1983 | EP0071715A2 Liquid ring vacuum pump for gaseous fluids |
| 12/07/1982 | US4362473 Rotary compressor for gas and liquid mixtures |
| 11/23/1982 | US4360318 Gas compressor of the rotating type |
| 11/16/1982 | US4359313 Liquid ring pump seal liquid chiller system |
| 10/06/1982 | EP0061626A1 Liquid-ring pump with a control disc mounted between an impeller casing and a cover comprising the fluid connexions |
| 08/17/1982 | CA1129833A1 Liquid ring pump |
| 06/29/1982 | CA1126709A1 Water ring rotary air compressor |
| 04/06/1982 | US4323334 Two stage liquid ring pump |
| 03/09/1982 | CA1119569A1 Liquid ring compressor or vacuum pump |
| 09/16/1981 | EP0035632A1 Method of operating a liquid ring gas pump |
| 08/19/1981 | EP0033726A1 Two stage liquid ring pump. |
| 08/04/1981 | US4282013 Using a liquid ring-seal type and a maleic-anhydride absorbent as sealing liquid to prevent pouling |
| 06/23/1981 | EP0033726A4 Two stage liquid ring pump. |
| 06/16/1981 | US4273515 Liquid ring pump |
| 03/24/1981 | US4257749 Liquid ring compressor or vacuum pump |
| 02/19/1981 | WO1981000438A1 Two stage liquid ring pump |
| 02/17/1981 | US4251190 Water ring rotary air compressor |
| 11/18/1980 | US4234325 Silencer-separator with internal trap for liquid seal blowers or the like |
| 08/26/1980 | CA1084459A1 Liquid ring pumps and compressors using a ferrofluidic ring liquid |
| 06/25/1980 | EP0012544A1 Liquid ring pump |
| 04/02/1980 | EP0009213A2 Liquid ring compressor or vacuum pump arrangement |
| 02/06/1980 | EP0007528A1 Liquid-ring pump arrangement |
| 12/25/1979 | CA1068655A Liquid ring pump |
| 10/30/1979 | US4172694 Long liquid ring pumps and compressors |
| 07/17/1979 | CA1058586A1 Method for compressing mixed gas consisting of combustible gas and air |
| 05/30/1979 | EP0002117A1 Long liquid ring pumps and compressors |
| 01/02/1979 | US4132504 Liquid ring pump |
| 09/19/1978 | CA1038835A1 Low vacuum pumping system |
| 09/05/1978 | CA1037927A1 Liquid ring compressor |
| 08/29/1978 | USRE29747 Liquid ring pump lobe purge |
| 06/06/1978 | US4093397 High vacuum pump |
| 05/02/1978 | US4087208 Method for compressing mixed gas consisting of combustible gas and air |
| 04/11/1978 | US4083658 Liquid ring compressor including a calibrated gas input opening |
| 02/21/1978 | US4074954 Compressor |
| 11/08/1977 | US4057368 Base frame construction for a liquid ring compressor set |
| 09/27/1977 | US4050851 Liquid ring pumps and compressors using a ferrofluidic ring liquid |
| 06/07/1977 | US4028016 Rotary displacement compressor with capacity control |
| 08/10/1976 | US3973879 Liquid ring compressor |
| 05/04/1976 | US3954567 Hydrocarbon or chlorohydrocarbon solvent |
| 01/13/1976 | US3932063 Liquid ring pumps |