| Patents for F04B 39 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups (22,436) |
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| 06/20/1989 | US4840547 Compressor including protective cap for hermetic terminal |
| 06/14/1989 | EP0319619A1 A plate-type fluid control valve |
| 06/14/1989 | CN1004509B Improved piston ring for a piston in a refrigerant compressor |
| 06/13/1989 | US4838770 Pumping device |
| 06/13/1989 | US4838769 High side scotch yoke compressor |
| 06/08/1989 | DE3739677A1 Device for cooling a compressor with cooling air |
| 06/07/1989 | EP0318509A1 Axial bearing device. |
| 06/06/1989 | US4836754 Turbulence generating device adjacent the inlet end of each discharge port of a multi-cylinder piston-type compressor for providing internal pulsation and noise suppression |
| 06/06/1989 | US4835856 Piston ring manufacturing method |
| 06/06/1989 | US4835849 Method of making an integral internal pressure relief valve |
| 05/31/1989 | EP0318017A1 Suppressor of gas pressure fluctuation and noise |
| 05/30/1989 | US4834632 Compressor valve system |
| 05/30/1989 | US4834631 Separator and biasing plate |
| 05/30/1989 | US4834627 Compressor lubrication system including shaft seals |
| 05/30/1989 | US4834626 Perfected portable motor-driven compressor set |
| 05/30/1989 | US4834625 Ceramic sound dampening encasement for fluid pump |
| 05/24/1989 | EP0317215A2 Motor compressor lubrication |
| 05/24/1989 | CN1004293B 压缩机 Compressor |
| 05/23/1989 | US4832715 Fine particle collector arrangement for vacuum pumps |
| 05/18/1989 | DE3837929A1 Anordnung zum tragen oder stuetzen von automobilteilen To carry arrangement or supports of automotive share |
| 05/16/1989 | US4830582 Rotary type compressing apparatus employing exhaust gas control valve |
| 05/16/1989 | US4830580 Two-stage air compressor unit |
| 05/16/1989 | CA1254157A1 Piston assembly |
| 05/16/1989 | CA1254087A1 Piston assembly for a refrigerant compressor |
| 05/05/1989 | WO1989003953A1 Helium pressure seal for a cryogenic refrigerator |
| 05/03/1989 | EP0314665A1 Plate-type valve for a compressor |
| 05/03/1989 | EP0314493A2 Sealing arrangement |
| 05/03/1989 | EP0314133A2 Oil cooled fluid compression apparatus |
| 05/03/1989 | EP0204792B1 Pistons |
| 04/20/1989 | DE3832565A1 Method of assembling a hermetic refrigerant compressor |
| 04/18/1989 | US4822259 System of compressing miscible fluids |
| 04/18/1989 | US4822251 Vacuum pump having an rpm-measuring device |
| 04/13/1989 | DE3832205A1 Hermetic coolant compressor for household refrigeration devices |
| 04/11/1989 | US4820133 Axial piston compressor with discharge valving system in cast housing head |
| 04/11/1989 | US4819689 Head-guided poppet valve member and valve assembly |
| 04/05/1989 | CN1032224A Lubrication system for compressor |
| 04/05/1989 | CN1032223A Lubrication system of compressor |
| 04/04/1989 | US4818198 Scroll fluid machine with oil feed passages |
| 04/04/1989 | US4818195 Scroll compressor with valved port for each compression chamber |
| 04/04/1989 | US4817390 Cryogenic compressor |
| 04/04/1989 | CA1252074A1 Quiet running compressor |
| 03/29/1989 | EP0308767A1 Plunger piston compressor |
| 03/29/1989 | CN1032062A Lubrication device for compressor |
| 03/28/1989 | US4815947 Compressor and method of assembling thereof |
| 03/23/1989 | DE3730333A1 Lubricating system for compressors |
| 03/23/1989 | DE3730332A1 Device for lubricating compressors |
| 03/21/1989 | US4813852 Discharge arrangement of a compressor having a plurality of compression chambers |
| 03/16/1989 | DE3829698A1 Piston pump, in particular radial piston pump |
| 03/16/1989 | DE3728239A1 Lubricating system for compressors |
| 03/15/1989 | EP0198911B1 Hermetic motor-compressor unit for refrigeration circuits |
| 03/15/1989 | CN1031745A Compressor with rotation detecting device |
| 03/14/1989 | US4812148 For railroad vehicle air brakes; compressor, cooler, valves, governor, control circuit |
| 03/14/1989 | US4811757 Discharge valve for compressor |
| 03/07/1989 | US4810915 Motor-compressor |
| 03/07/1989 | US4809591 For reciprocation in an internal combustion engine |
| 02/28/1989 | US4808085 Closed type electric compressor |
| 02/28/1989 | CA1250555A1 Reed valve for refrigeration compressor |
| 02/22/1989 | EP0303828A2 Compressor valve with flat spring |
| 02/16/1989 | DE3725050A1 Positive-displacement machine with non-return valve for filling |
| 02/15/1989 | EP0303553A2 Hybrid composite compressor |
| 02/15/1989 | CN2032659U Exhaust valve of piston-type refrigeration compressor |
| 02/15/1989 | CN2032658U Sealing device for reciprocating motion shaft |
| 02/14/1989 | CA1249983A1 HIGH PRESSURE RECIPROCATING MOTION COMPRESSOR AND USE THEREOF FOR THE POLYMERIZATION OF ETHYLENE AND .alpha.-OLEFINS |
| 02/07/1989 | US4802826 Sealed, self-contained, liquid-cooled, gas compressor |
| 01/31/1989 | US4801250 Valve structure for a compressor |
| 01/25/1989 | EP0300994A1 Compressor valve |
| 01/25/1989 | EP0300989A1 Plate valve for a compressor |
| 01/25/1989 | EP0300884A1 Hermetic or semi-hermetic refrigeration motor compressor unit |
| 01/25/1989 | EP0300866A1 Hermetic motor compressor |
| 01/25/1989 | CN2031459U New type module of admission and exhaust system for a mini-compressor |
| 01/24/1989 | US4799507 Adjustable compressor valve which can accommodate changing operating conditions in the compressor to which it is attached |
| 01/24/1989 | US4799421 Hydrodynamic spiral-grooved journal bearing for electromagnetically rotated and reciprocated compressor piston |
| 01/17/1989 | CA1248769A1 Linear motor compressor with clearance seals and gas bearings |
| 01/04/1989 | EP0196314B1 A cooling or refrigerating system |
| 01/03/1989 | US4795316 Compressor suction pulse attenuator |
| 01/03/1989 | US4794848 Anti-seizing design for circumferentially continuous piston ring |
| 12/29/1988 | DE3720462A1 Arrangement for cooling and lubricating a compressor |
| 12/28/1988 | CN88103729A Compressor with radial bearing for supporting drive shaft |
| 12/28/1988 | CA1247571A Sealed, self-contained, liquid-cooled, gas compressor |
| 12/27/1988 | US4793775 Hermetic motor-compressor unit for refrigeration circuits |
| 12/21/1988 | EP0295664A2 Compressor |
| 12/20/1988 | US4792296 Scroll compressor with pressure-equalizing passage and gas vent conduit in main shaft |
| 12/20/1988 | US4792288 Encapsulated compressor |
| 12/20/1988 | CA1247160A1 Floating seal for closing a cavity |
| 12/20/1988 | CA1247159A1 Shaft seal |
| 12/15/1988 | DE3816539A1 Automatic plate valve |
| 12/15/1988 | DE3710824A1 Control plate for controlling the charge cycle in piston engines and pumps |
| 12/13/1988 | US4791329 Motor protector mounting structure for enclosed electric compressors |
| 12/13/1988 | US4790730 Heatable diaphragm pump for gases |
| 12/13/1988 | US4790726 Air free reciprocatory vacuum pump |
| 12/13/1988 | CA1246508A1 Suction tube seal for a rotary compressor |
| 12/13/1988 | CA1246507A1 Oil dispersing device |
| 12/07/1988 | EP0294322A2 Pump for fluid including liquified gas |
| 12/07/1988 | CN87214884U To-and-fro pump rod following and sealing device |
| 11/30/1988 | EP0293213A2 Improvements relating to gas compressor apparatus |
| 11/29/1988 | CA1245608A1 Compressor suction gas heat shield |
| 11/22/1988 | CA1245199A1 Bearing construction for refrigeration compressor |
| 11/17/1988 | EP0291466A2 Motor compressor unit for refrigerants |
| 11/15/1988 | US4784583 Reciprocating hermetic motor compressor with a thermetically insulatable non-rotatable muffler |
| 11/15/1988 | US4784581 Compressor head and suction muffler for hermetic compressor |