| Patents for F04C 27 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids (2,516) |
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| 08/04/1987 | US4684330 Drive for rotary compressor |
| 06/16/1987 | CA1222986A1 Scroll type fluid compressor unit |
| 06/09/1987 | CA1222734A1 Scroll machine using discharge pressure for axial sealing |
| 06/02/1987 | US4669962 Scroll compressor with pressure differential maintained for supplying oil |
| 04/14/1987 | US4657495 Rotor-shaft bearing apparatus for rotary compressors |
| 04/09/1987 | DE3535585A1 Ring seal for the rotor housing of a compressor |
| 04/07/1987 | US4655800 Adsorption of chlorine containing gases |
| 03/31/1987 | US4653991 Vane type compressor with fluid pressure biased vanes |
| 03/24/1987 | US4652214 Seal arrangement for an oil-sealed rotary vacuum pump |
| 03/10/1987 | US4648817 Supercharger for supplying a heat engine of a motor vehicle |
| 02/25/1987 | CN85205644U Shaft seal construction of vortex compressor |
| 02/24/1987 | US4645437 Scroll compressors with annular sealed high pressure thrust producing member |
| 02/24/1987 | US4645436 Scroll type fluid displacement apparatus with improved anti-wear device |
| 12/30/1986 | US4632650 Vacuum pump having an evacuated gear chamber |
| 12/30/1986 | US4632402 In a gas pumping apparatus |
| 12/18/1986 | WO1986007416A1 Device in an oil-free rotary gas compressor |
| 12/17/1986 | CN85205724U Fully tangential, sealed air-blower |
| 10/29/1986 | EP0198936A1 Multistage vacuum pump |
| 10/21/1986 | US4618319 Vane-type compressor having resilient slot seals |
| 08/06/1986 | EP0189650A2 Axial sealing mechanism for a scroll compressor |
| 07/23/1986 | CN85109446A Axial sealing mechanism for a scoll compressor |
| 06/24/1986 | US4596520 Hermetic scroll compressor with pressure differential control means for a back-pressure chamber |
| 06/17/1986 | US4594992 Supercharger of an internal combustion engine having Roots pump |
| 06/10/1986 | CA1205787A1 Rotary compressor or expansion engine of hypotrochoidal configuration and angularly displaced gear means |
| 06/03/1986 | CA1205438A1 Oil-free rotary displacement compressor |
| 05/13/1986 | US4588504 Oil circuit coupler for an oil-sealed vacuum pump |
| 04/09/1986 | EP0176828A1 Oil-sealed vacuum pump |
| 03/11/1986 | US4575322 Oil-sealed vane pump |
| 03/11/1986 | US4575318 Unloading of scroll compressors |
| 02/27/1986 | WO1986001262A1 Unloading of scroll compressors |
| 02/26/1986 | EP0172674A1 Scroll type fluid compressor |
| 02/11/1986 | US4569640 Device for high pressure compression |
| 01/14/1986 | US4564343 Scroll compressor having improved sealing |
| 12/10/1985 | US4557675 Scroll-type fluid machine with back pressure chamber biasing an orbiting scroll member |
| 12/04/1985 | EP0163228A2 Inlet shut-off valve for rotary piston pumps |
| 11/27/1985 | EP0162434A2 Antisuckback device for rotary piston pumps |
| 10/09/1985 | EP0156951A2 Twin shaft vacuum pump having gearing space evacuation |
| 10/02/1985 | EP0156096A2 Shaft seal |
| 09/24/1985 | US4543049 Vane compressor with means for obtaining sufficient back pressure upon vanes at the start of compressor |
| 09/18/1985 | EP0154856A2 Vane type compressor |
| 07/16/1985 | US4529366 Vane type compressor with elastic sealings |
| 06/25/1985 | US4525129 Oil-sealed vacuum pump |
| 06/19/1985 | EP0144888A2 Oil-sealed vane pump |
| 06/11/1985 | US4522575 Scroll machine using discharge pressure for axial sealing |
| 04/10/1985 | EP0136617A2 Dual seal system for roots blower |
| 03/05/1985 | CA1183503A1 Compressor |
| 01/29/1985 | US4496296 Device for pressing orbiting scroll member in scroll type fluid machine |
| 12/11/1984 | US4487563 Oil-free rotary displacement compressor |
| 11/28/1984 | EP0126477A1 Rotor-shaft bearing apparatus for movable vane compressors |
| 11/27/1984 | US4484868 Vane compressor having improved cooling and lubrication of drive shaft-seal means and bearings |
| 11/20/1984 | US4483667 Vacuum pump and method of operating the same |
| 11/07/1984 | EP0124114A2 Scroll-type compressor |
| 10/09/1984 | US4475877 Globoid worm machine with metal ring in bearing housing |
| 09/26/1984 | EP0119887A1 Seal assembly for closing a cavity, particularly in a rotary pump or compressor |
| 09/18/1984 | US4472122 Rolling piston type compressor |
| 08/22/1984 | EP0116136A2 Rotary compressor |
| 08/14/1984 | US4465442 Rotary piston pump with pressure equalization chambers for the shaft split seals |
| 08/14/1984 | US4465286 Seal for closing a cavity |
| 08/07/1984 | CA1172222A1 Compressor |
| 07/17/1984 | CA1171045A1 Rotary compressor |
| 04/17/1984 | US4443158 Liquid ring pump with a control disk arranged between the impeller housing and the cover |
| 03/20/1984 | US4437821 Shaft seal for pump means |
| 03/20/1984 | US4437820 Scroll type fluid compressor unit with axial end surface sealing means |
| 01/24/1984 | CA1160906A1 Rotary fluid pump |
| 11/24/1983 | WO1983004075A1 Seal for rotary piston pump |
| 11/08/1983 | CA1156627A1 Rotary compressor with rotor shaft bearing lubricant inlet and drainage means |
| 09/06/1983 | US4402653 Rotary compressor |
| 08/09/1983 | US4397620 Rotary bladed compressor with sealing gaps at the rotary ends |
| 07/27/1983 | EP0084085A1 Vacuum pump with a suction branch valve, and method for its operation |
| 07/27/1983 | EP0084084A1 Oil-sealed vacuum pump |
| 07/26/1983 | US4395208 Rotary vane compressor with wedge-like clearance between rotor and cylinder |
| 07/19/1983 | US4394114 Compressor |
| 07/19/1983 | US4394113 Lubrication and packing of a rotor-type compressor |
| 06/21/1983 | US4389170 Rotary vane pump with passage to the rotor and housing interface |
| 05/24/1983 | US4384828 Sliding vane compressor |
| 03/30/1983 | EP0075053A1 Wear-resisting means for scroll-type fluid-displacement apparatuses |
| 12/28/1982 | US4365941 Scroll compressor provided with means for pressing an orbiting scroll member against a stationary scroll member and self-cooling means |
| 11/09/1982 | CA1135120A1 Rotary fluid pump |
| 11/02/1982 | US4357132 Hermetic scroll fluid discharge apparatus with pressurized fluid passage in wrap |
| 10/06/1982 | EP0061626A1 Liquid-ring pump with a control disc mounted between an impeller casing and a cover comprising the fluid connexions |
| 06/15/1982 | US4334830 Two-stage liquid ring pump with improved intrastage and interstage sealing means |
| 05/11/1982 | US4329126 Method for preventing a leakage loss of gases in a screw compressor |
| 05/11/1982 | US4328684 Screw compressor-expander cryogenic system with magnetic coupling |
| 04/14/1982 | EP0049480A1 Scroll type fluid compressor unit |
| 02/16/1982 | US4315719 Non-lubricated rotary pump with discharge through end heads |
| 01/19/1982 | US4311021 Screw compressor-expander cryogenic system with mist lubrication |
| 10/27/1981 | US4296936 Seal mechanism for the rotor periphery of a rotary piston engine |
| 09/29/1981 | US4291547 Screw compressor-expander cryogenic system |
| 08/11/1981 | US4283167 Cooling structure for an oil sealed rotary vacuum pump |
| 06/30/1981 | US4276005 Oil flow metering structure for oil sealed mechanical vacuum vane pump |
| 06/24/1981 | EP0030636A2 Screw compressor-expander cryogenic system with magnetic coupling |
| 06/24/1981 | EP0030619A1 Rotor compressor, especially screw rotor compressor, with lubricant supply to and drainage thereof from the bearings |
| 06/23/1981 | US4274817 Rotary vane pump with inlet and discharge ports in end sealing plates |
| 05/19/1981 | US4268230 Gas ballast for oil sealed mechanical vacuum vane pump |
| 03/24/1981 | US4257753 Rotary fluid vane pump with means preventing axial displacement of the drive shaft |
| 12/30/1980 | CA1092570A1 Rotor for rotary piston mechanism |
| 08/12/1980 | US4216661 Scroll compressor with means for end plate bias and cooled gas return to sealed compressor spaces |
| 07/08/1980 | CA1081190A1 Rotary fluid pump or compressor |
| 06/25/1980 | EP0012614A1 Improvements in scroll type fluid compressor units |
| 04/15/1980 | US4198195 Rotary fluid pump or compressor |