| Patents for F04C 29 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups (16,981) |
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| 04/12/1988 | US4737081 Variable capacity vane compressor |
| 04/07/1988 | WO1988002438A1 Rotary machine |
| 03/31/1988 | DE3632318A1 Dry-running rotary vane vacuum pump |
| 03/29/1988 | US4734020 Scroll type compressor with spiral oil feeding grooves in thrust bearing |
| 03/16/1988 | EP0259333A1 Refrigeration plant and rotary positive displacement machine. |
| 03/15/1988 | US4730997 Hermetic scroll compressor having concave spaces communicating with a delivery port |
| 03/15/1988 | US4730996 Rotary compressor with two discharge valves having different frequencies |
| 03/15/1988 | US4730994 Compressor with improved exposed outboard thrust plate and method of assembly |
| 03/15/1988 | US4730695 Muffler for hermetic compressor |
| 03/09/1988 | EP0258255A1 Method of operating an oil-free rotary gas compressor. |
| 03/09/1988 | EP0258234A1 Refrigeration system. |
| 03/08/1988 | US4729728 Compressor with improved lubricating system |
| 03/08/1988 | CA1233800A1 Rotary compressor |
| 03/08/1988 | CA1233799A1 Integral slide valve-oil separator apparatus in a screw compressor |
| 03/01/1988 | US4728273 Rotary piston compressor |
| 03/01/1988 | US4727725 Gas injection system for screw compressor |
| 02/25/1988 | DE3727986A1 Compacting machine compressing fluid e.g. refrigeration compressor |
| 02/25/1988 | DE3628199A1 Air-cooled compressor |
| 02/24/1988 | EP0256624A2 Variable capacity vane compressor |
| 02/23/1988 | CA1233144A1 Controlled suction unloading in a scroll compressor |
| 02/17/1988 | EP0255920A2 Vane vacuum pump |
| 02/17/1988 | CN87105288A Rotary type compressor using exhaust regulating valve |
| 02/17/1988 | CN86105303A New material of vacuum-pump vane-swivelling vane for three-lipid cotton pump |
| 02/16/1988 | US4725210 Oilless rotary-type compressor system |
| 01/26/1988 | CA1231844A1 Device for oil cooling in a compression unit and, particularly, a screw compression unit |
| 01/21/1988 | DE3721138A1 Vacuum pump on motor vehicle engines as servopump |
| 01/20/1988 | EP0253049A2 Scroll compressor |
| 01/19/1988 | US4720250 Regulator for cooling or heat pump systems |
| 01/14/1988 | WO1988000294A1 Screw rotor compressor |
| 01/05/1988 | US4717316 Rotary compressor |
| 12/30/1987 | CN87103909A Rotary compressor |
| 12/29/1987 | US4715800 Rotary compressor with clutch actuated by hydraulic fluid and compressed fluid |
| 12/22/1987 | US4714416 Quiet running compressor |
| 12/22/1987 | US4714414 Plural-stage gas compressor |
| 12/22/1987 | US4714139 Lubricating system for gas turbine engines and pump for such a system |
| 12/16/1987 | EP0248839A1 Intermittent service screw compressor. |
| 12/16/1987 | CN87103954A Compressor |
| 12/16/1987 | CN87103613A Hermetically sealed rotary compressor |
| 12/15/1987 | US4712986 Oil feeding apparatus for a rotary compressor |
| 12/15/1987 | US4712442 Lubricating mechanism for a rotary machine |
| 12/10/1987 | DE3628163A1 Bearing for a drive gearwheel of an internal-toothed gear pump |
| 12/08/1987 | US4711771 Process and apparatus for cooling a gaseous stream before and/or during its compression |
| 12/08/1987 | US4711620 Moving vane type compressor |
| 12/02/1987 | EP0247057A1 High output rotary compressor |
| 12/01/1987 | US4710111 Rotary compressor with oil groove between journal and journal bearing |
| 12/01/1987 | US4709682 Device for controlling the pressure in the bearings of a roots blower supercharger |
| 11/25/1987 | EP0246382A2 Backflow passage for rotary blower of the Roots-type |
| 11/24/1987 | US4708607 Scroll compressor with lower and higher pressure chambers acting on the orbiting end plate |
| 11/24/1987 | CA1229520A1 Axial sealing device for a scroll type fluid displacement apparatus |
| 11/17/1987 | US4706353 Method and apparatus for the assembly of rotary compressors particularly for motor compressor units for refrigerators and the like |
| 11/12/1987 | DE3619645A1 Bearing arrangement for a rotary piston ventilator with an external axis |
| 11/04/1987 | CN87103137A Compressor lubrication and noise reduction system |
| 11/03/1987 | US4704076 Rotary compressor |
| 10/27/1987 | US4703021 Sliding contact type ceramics article and a method for manufacturing the same |
| 10/27/1987 | US4702684 Slide vane type compressor with increased suction part-cross-sectional area |
| 10/27/1987 | US4702683 Motor driven scroll-type machine with an eccentric bushing structure for enhancing lubrication |
| 10/27/1987 | US4702682 Motor driven scroll-type machine with compact oil lubricating structure |
| 10/27/1987 | US4702681 Motor driven scroll-type machine with cooling and lubricating structure |
| 10/27/1987 | US4702088 Compressor for reversible refrigeration cycle |
| 10/21/1987 | CN86100642A Rotary electromotive compressor |
| 10/20/1987 | US4701085 Method and apparatus for external broaching of resin-coated parts |
| 10/20/1987 | US4700740 Discharge valve |
| 10/15/1987 | DE3611395A1 Rotating piston compressor |
| 10/14/1987 | EP0240823A2 Rolling piston compressor |
| 10/14/1987 | EP0240739A1 Scroll type compressor with lubricating system |
| 10/14/1987 | CN86102105A Improved compressor |
| 10/01/1987 | DE3609996A1 Screw-type compressor |
| 09/29/1987 | US4696866 Aluminum, silicon alloy type; wear, heat resistance; engines |
| 09/29/1987 | US4696630 Scroll compressor with a thrust reduction mechanism |
| 09/29/1987 | US4696629 Hermetic scroll compressor with welded casing section |
| 09/29/1987 | US4696628 Scroll-type fluid transferring machine with intake port and second intake passage |
| 09/29/1987 | US4696627 Scroll compressor |
| 09/29/1987 | US4696626 Railroad car air compressor unit |
| 09/29/1987 | CA1227519A1 Rotor-shaft bearing apparatus for movable vane compressors |
| 09/29/1987 | CA1227469A1 Rotary compressor |
| 09/29/1987 | CA1227468A1 Rotary compressor housing |
| 09/23/1987 | EP0238163A2 Compressor system |
| 09/23/1987 | EP0237734A2 Screw vacuum pump unit |
| 09/16/1987 | EP0237501A2 Improvements in pneumatic vane pumps with intermittent lubrication and operation |
| 09/16/1987 | EP0236665A1 Scroll compressor |
| 09/15/1987 | US4693736 Oil cooled hermetic compressor used for helium service |
| 09/09/1987 | EP0235150A1 Vane cell pump. |
| 09/02/1987 | EP0234801A2 Fluid control valve |
| 08/13/1987 | DE3603809A1 Two-step slide vane rotary vacuum pump |
| 08/04/1987 | US4684330 Drive for rotary compressor |
| 08/04/1987 | CA1225071A1 Helical screw rotary compressor for air conditioning system having improved oil management |
| 07/30/1987 | DE3702259A1 Device for arrangement of the axial bearings of a worm compressor |
| 07/21/1987 | US4681519 Rotor for rotary fluid pump |
| 07/21/1987 | CA1224450A1 Strainer device for rotary compressor |
| 07/08/1987 | EP0227881A1 Rotary compressor with vane slot pressure groove |
| 07/08/1987 | EP0227880A1 Compressor with an exposed outboard thrust plate |
| 06/30/1987 | US4676726 Rotary compressor |
| 06/30/1987 | US4676075 Scroll-type compressor for helium gas |
| 06/25/1987 | DE3639944A1 Standardised unit |
| 06/25/1987 | DE3639943A1 Vane pump |
| 06/23/1987 | US4674963 Scroll type machine with tilting thrust bearing |
| 06/23/1987 | US4674960 Sealed rotary compressor |
| 06/18/1987 | WO1987003651A1 Intermittent service screw compressor |
| 06/16/1987 | US4673339 Scroll compressor with suction port in stationary end plate |
| 06/16/1987 | CA1222989A1 Scroll type fluid displacement apparatus with oil separating mechanism |