| 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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| 06/16/1987 | CA1222984A1 Drive shaft support means for fluid displacement apparatus |
| 06/09/1987 | CA1222734A1 Scroll machine using discharge pressure for axial sealing |
| 06/09/1987 | CA1222733A1 Scroll machine with discharge passage through orbiting scroll plate and associated lubrication system |
| 06/04/1987 | DE3637229A1 Structural unit consisting of a hydraulic pump and a vacuum pump |
| 05/20/1987 | EP0222109A1 Multiple cylinder rotary compressor |
| 05/05/1987 | US4662826 Vacuum pump system including serially connected rotary and reciprocating vacuum pumps |
| 04/29/1987 | CN86105344A Compressor with an exposed outboard thrust plate |
| 04/29/1987 | CN86104225A Rotary compressor with vane slot pressure groove |
| 04/14/1987 | US4657487 Vacuum generating apparatus including liquid ring pump, pre-separator, two heat exchangers and fine separator |
| 04/08/1987 | EP0217128A1 Motor pump unit with vanes without external oil leakage |
| 04/07/1987 | US4655697 Scroll-type apparatus with gap adjustment means |
| 03/17/1987 | US4650398 Bearing unit with integrated pump |
| 03/17/1987 | US4649611 Method of and apparatus for positioning compressor scroll member |
| 03/10/1987 | US4648811 Closed type compressor |
| 03/04/1987 | EP0212570A2 Rolling piston compressor |
| 02/24/1987 | US4645437 Scroll compressors with annular sealed high pressure thrust producing member |
| 02/05/1987 | DE3623392A1 Pump combination |
| 02/03/1987 | US4640669 Rotary compressor lubrication arrangement |
| 01/27/1987 | US4639198 Suction tube seal for a rotary compressor |
| 12/30/1986 | EP0206153A1 Compact air compression installation, especially with a screw compressor |
| 12/23/1986 | US4631006 Compact vacuum pump |
| 12/16/1986 | US4629403 Rotary compressor with vane slot pressure groove |
| 12/09/1986 | US4627802 Rotary vane compressor with inlet and outlet valves in the rotor |
| 11/20/1986 | EP0201672A2 Compact screw-type compressor |
| 11/11/1986 | US4621993 Scroll-type positive fluid displacement apparatus with oil compartment plate |
| 10/29/1986 | EP0198936A1 Multistage vacuum pump |
| 10/29/1986 | CN85107168A Suction tube seal for a rotary compressor |
| 09/24/1986 | EP0195560A2 Rotary compressor |
| 09/02/1986 | US4609334 Scroll-type machine with rotation controlling means and specific wrap shape |
| 08/27/1986 | CN85108114A Rotary compressor for refrigerant |
| 08/19/1986 | US4606707 Pump apparatus having two drive motors |
| 07/23/1986 | CN85106952A Rotary compressor lubrication arrangement |
| 07/22/1986 | US4601644 Main bearing for a rotary compressor |
| 07/22/1986 | US4601643 Rotary compressor machines |
| 07/09/1986 | EP0186776A1 Apparatus for the production of a vacuum |
| 06/24/1986 | US4596522 Hermetic type compressor with reduced thickness portions for welding |
| 06/24/1986 | US4596521 Scroll fluid apparatus |
| 06/11/1986 | EP0184281A1 Main bearing for a rotary compressor |
| 06/10/1986 | CN85108408A Two-cylinder type rotary compressor |
| 06/10/1986 | CN85106950A Main bearing for a rotary compressor |
| 06/10/1986 | CN85106797A Process for production of vacuum |
| 06/04/1986 | EP0183332A1 Suction tube seal for a rotary compressor |
| 06/04/1986 | EP0182993A1 Rotary compressor lubrication arrangement |
| 05/28/1986 | EP0182476A2 Compressor casing and method of manufacturing it |
| 05/13/1986 | US4588358 Rotary vane evacuating pump |
| 05/07/1986 | CN85202702U Transfer mechanism for link closure refrigerating compressor |
| 04/29/1986 | US4585403 Scroll device with eccentricity adjusting bearing |
| 04/29/1986 | US4584750 Enclosed type compressor and method for assembling the same |
| 04/29/1986 | CA1203786A1 Rolling thrust bearing for use in a scroll machine |
| 04/01/1986 | US4579512 Scroll-type fluid machine with radial clearance between wraps |
| 03/19/1986 | EP0174454A2 Installation for the minimalisation of cooling liquid consumption, especially for liquid ring vacuum pumps or similar pumps |
| 03/05/1986 | EP0172820A1 Vane compressor |
| 03/04/1986 | CA1201310A1 Gear box for a compressor plant |
| 02/19/1986 | EP0171656A1 Liquid ring compressor |
| 02/18/1986 | CA1200803A1 Scroll compressor with controlled suction unloading using coupling means |
| 01/28/1986 | US4566869 Reversible multi-vane rotary compressor |
| 01/22/1986 | EP0168561A2 Scroll compressor |
| 01/22/1986 | EP0168560A2 A scroll compressor |
| 01/14/1986 | US4564339 Scroll compressor |
| 01/08/1986 | EP0166807A2 Rotary vane vacuum pump |
| 01/08/1986 | EP0166804A1 Two stage rotary compressor |
| 01/07/1986 | US4563138 Compressor system with oil separation |
| 12/27/1985 | EP0165714A2 Scroll-type apparatus and method for the assembly thereof |
| 12/24/1985 | US4560330 Scroll device with suction chamber pressure relief |
| 12/10/1985 | US4557675 Scroll-type fluid machine with back pressure chamber biasing an orbiting scroll member |
| 11/26/1985 | US4555224 Oil feeding device for scroll fluid apparatus |
| 11/19/1985 | US4553903 Two-stage rotary compressor |
| 11/12/1985 | US4552518 Scroll machine with discharge passage through orbiting scroll plate and associated lubrication system |
| 11/12/1985 | CA1196615A1 Gerotor vacuum pump |
| 11/05/1985 | US4551082 Bearing device of sealed type scroll compressor |
| 11/05/1985 | US4551081 Pulley mechanism for fluid displacement apparatus |
| 10/09/1985 | EP0157390A2 Scroll-type hydraulic machine |
| 10/09/1985 | EP0156978A1 Liquid ring compressor or vacuum pump with an integrated electric motor |
| 10/08/1985 | US4545747 Scroll-type compressor |
| 09/24/1985 | CA1194070A1 Alternator with vacuum pump |
| 09/10/1985 | US4540353 Two stage vacuum pump with shaft seal |
| 07/16/1985 | CA1190527A1 Scroll machine with flex member pivoted swing link |
| 07/02/1985 | US4526522 Hermetic type compressor and production methods thereof with reduced thickness casing portions for welding |
| 06/25/1985 | US4524638 Gear box for a compressor plant |
| 06/18/1985 | US4523897 Two stage vacuum pump |
| 06/11/1985 | US4522575 Scroll machine using discharge pressure for axial sealing |
| 06/11/1985 | US4522574 Balancing weight device for scroll-type fluid machine |
| 06/04/1985 | US4520624 Diesel particulate filter system |
| 05/28/1985 | US4519755 For evacuating gases from a container |
| 05/21/1985 | US4518324 Sealed type electrically operated compressor |
| 05/14/1985 | US4517466 Vacuum pump |
| 05/07/1985 | US4515515 Compressor servomechanical regulator |
| 04/30/1985 | US4514153 Rotary vane pump with clutch |
| 04/23/1985 | US4512728 Combined rotary pump and compressor unit |
| 04/23/1985 | CA1185942A1 Mechanically actuated tip seals for scroll apparatus and scroll apparatus embodying the same |
| 04/02/1985 | US4508494 Two stage rotary vane pump |
| 03/26/1985 | US4507064 Rotary gas compressor having rolling pistons |
| 03/19/1985 | US4505645 Process and installation for rapidly creating a high vacuum using a single stage liquid ring pump |
| 03/12/1985 | US4504201 Mechanical pumps |
| 03/05/1985 | US4502852 Oil feeding device for scroll fluid apparatus |
| 02/12/1985 | US4498853 Vane-type compressor |
| 01/29/1985 | US4496296 Device for pressing orbiting scroll member in scroll type fluid machine |
| 01/29/1985 | US4496293 Compressor of the scroll type |
| 01/22/1985 | US4494914 Scroll fluid apparatus with displaced centers for the scroll member end plates |
| 12/11/1984 | US4487560 Scroll fluid compressor with surface finished flat plates engaging the wraps |