| 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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| 09/12/1990 | EP0386321A1 Hermetic compressor having resilient internal mounting |
| 09/12/1990 | EP0386320A1 Suction line connector for hermetic compressor |
| 09/12/1990 | EP0108795B2 Oil distribution system for a compressor |
| 09/11/1990 | US4955797 Valve indexing for a compressor |
| 09/11/1990 | US4955796 Refrigerant gas compressor construction |
| 09/07/1990 | WO1990010156A1 Swash plate compressor equipped with means for separating refrigerant gas and lubricant |
| 09/04/1990 | US4954047 Evacuation apparatus |
| 08/22/1990 | EP0382921A1 Reed valve |
| 08/21/1990 | US4949982 Compressor valve assembly |
| 08/16/1990 | EP0382671A2 Motor suspension improvements in sealed refrigerating compressors |
| 08/15/1990 | CN2060482U 放电泵 Discharge pump |
| 08/14/1990 | US4948343 Slant-plate type compressor with adjustably positionable drive shaft |
| 08/07/1990 | US4945946 Valve seat for a plate-type, fluid-control valve |
| 08/02/1990 | DE3902658A1 Piston compressor |
| 08/02/1990 | DE3901071A1 Piston pump |
| 08/01/1990 | EP0380302A2 High pressure piston sealing system |
| 07/31/1990 | US4944663 Rotary compressor having oxidizing and nitriding surface treatment |
| 07/26/1990 | DE3901588A1 Vertically arranged rotor/crankshaft combination for a hermetic refrigerant compressor |
| 07/25/1990 | EP0378967A1 Piston compressor |
| 07/19/1990 | DE4000275A1 Outlet valve for hermetically encapsulated refrigeration compressor - uses two-stage spring acting on valve disc controlling opening in valve plate fitted to cylinder |
| 07/18/1990 | CN2059463U Oil saver for crankcase oil |
| 07/18/1990 | CN1043982A Piston ring having function which is for facilitating supply of lubricating oil into annular groove of piston |
| 07/11/1990 | EP0377286A1 Improvements relating to a piston ring |
| 07/11/1990 | CN1008760B Hermetically sealed rotary compressor |
| 07/10/1990 | US4940342 Compressor with a radial bearing for supporting a drive shaft |
| 07/10/1990 | US4939952 Connecting rod for an axial piston compressor |
| 07/04/1990 | CN1043542A Sealed compressor |
| 07/03/1990 | US4938664 Oil reclaim system |
| 07/03/1990 | US4938663 Air compressor malfunction detector |
| 06/26/1990 | US4936747 Compressor with condition responsive cut-off means |
| 06/26/1990 | US4936327 Valve arrangement |
| 06/21/1990 | DE3940617A1 Cylinder head for refrigerant compressor - incorporates profiled metal sheet soldered to bulkhead |
| 06/20/1990 | EP0373521A2 Dry-running high-pressure stage of a multistage piston compressor |
| 06/20/1990 | CN1008466B Cylinder block for refrigerating compressor |
| 06/19/1990 | US4934905 Oil turbulence minimizer for a hermetic compressor |
| 06/19/1990 | US4934482 Pulse damper |
| 06/13/1990 | EP0372154A1 Input power saving device for piston compressors, especially for the compressed-air installation of a motor vehicle |
| 06/13/1990 | DE3909531A1 Device for saving power in piston compressors, in particular for compressed-air generation in motor vehicles |
| 06/12/1990 | US4932841 Combination oil pressure regulator and low oil pressure detector for refrigerant compressor |
| 06/12/1990 | US4932631 Apparatus to transmit drive force between two components |
| 06/06/1990 | EP0371407A2 Ring valve type air compressor |
| 06/06/1990 | EP0371396A2 Air compressor unloading system |
| 06/05/1990 | US4930995 Device for reducing refrigerant gas pulsations in a compressor |
| 06/05/1990 | US4930406 Refrigerant gas compressor construction |
| 06/05/1990 | US4930405 Reciprocating piston compressor for small refrigerating machines and assembly method therefor |
| 06/05/1990 | CA1269967A1 Refrigeration compressor |
| 05/30/1990 | EP0370521A1 In-line filter device for compressed air |
| 05/30/1990 | CN1042601A Refrigerant injection into oil for sound reduction |
| 05/29/1990 | US4929157 Pulsation damper for air conditioning compressor |
| 05/29/1990 | US4928997 Rotating union with carbon graphite labyrinthine seal |
| 05/29/1990 | US4928723 Capacity control valve for a compressor |
| 05/23/1990 | EP0179798B1 Vacuum pump purging apparatus |
| 05/15/1990 | US4926081 Thermally protected hermetic motor compressor |
| 05/15/1990 | US4924906 Ring valve |
| 05/15/1990 | US4924861 Piston and cylinder unit as supply device for the respiratory air of a respirator |
| 05/09/1990 | EP0300884B1 Hermetic or semi-hermetic refrigeration motor compressor unit |
| 05/02/1990 | EP0366464A2 Compressed air dispensing machine |
| 05/01/1990 | US4921409 High pressure reciprocating pump |
| 05/01/1990 | US4920862 Trunk piston compressor |
| 04/28/1990 | CA2001699A1 Compressed air dispensing machine |
| 04/19/1990 | DE3932519A1 Hermetically sealed motor-compressor unit for domestic refrigerator - has seatings fitted to projections at opposite ends of motor support |
| 04/19/1990 | DE3838684C1 Valve, particularly for compressors or vacuum pumps |
| 04/18/1990 | CN1041427A Protector for enelosed electric-motored compressor |
| 04/18/1990 | CN1007638B Crank channel type respiration structure |
| 04/11/1990 | CN1041205A Compressor housing having structure for preventing slippage of vibroisolating members |
| 04/11/1990 | CN1007541B Lubricating system of compressor |
| 04/10/1990 | US4915602 Pump for pumping a fluid comprising a liquified gas |
| 04/10/1990 | US4915594 Improved compressor crankshaft |
| 04/04/1990 | EP0361394A2 Protective device for a hermetic motor-driven compressor |
| 04/04/1990 | EP0361089A1 Motor compressor unit for refrigeration or heat pump application |
| 04/04/1990 | CN1041026A Foreign particles trap for compressor |
| 04/03/1990 | US4913565 Screw rotor compressor |
| 04/03/1990 | US4913187 Compressor valve with flat spring |
| 04/03/1990 | US4913001 Piston assembly for compressors |
| 03/28/1990 | EP0360448A2 Condensing unit with a system for mounting a motor-compressor |
| 03/27/1990 | US4911619 Suction system of hermetic refrigeration compressor |
| 03/27/1990 | US4911618 Cryocompressor with a self-centering piston |
| 03/27/1990 | US4911617 Air pressure circuit |
| 03/27/1990 | US4911614 Piston type compressor provided with valve assembly structure for reducing noise |
| 03/21/1990 | EP0359100A1 Compressor housing having a structure for preventing slippage of vibroisolating members |
| 03/21/1990 | EP0358926A1 Foreign particle trap for a compressor |
| 03/14/1990 | CN1007173B Reciprocating-piston compressor for small refrigerator and method for assembling same |
| 03/13/1990 | US4907951 Foreign particle trap for a compressor |
| 03/13/1990 | US4907414 Refrigerant injection into oil for sound reduction |
| 03/06/1990 | US4905790 Suppressor of gas pressure fluctuation and noise |
| 02/27/1990 | US4904302 Roller in rotary compressor and method for producing the same |
| 02/27/1990 | US4904165 Muffler/check valve assembly for scroll compressor |
| 02/21/1990 | CN1039880A Controlling valve of compressor |
| 02/21/1990 | CN1006926B Compressor with rotation detecting device |
| 02/20/1990 | US4902205 Oil pump for a horizontal type rotary compressor |
| 02/20/1990 | US4901629 Sealing arrangement |
| 02/14/1990 | EP0354263A1 Helium-supplying compressor for a cryogenic refrigerator |
| 02/13/1990 | US4900234 For reducing radiated sound levels in hermetic compressors |
| 02/13/1990 | US4900233 Reciprocating compressor providing a lubricant free compressed gas |
| 02/07/1990 | EP0354161A2 Muffler/check valve assembly for scroll compressor |
| 02/07/1990 | EP0353588A2 Sound insulation hood for compressor units |
| 02/07/1990 | EP0353462A1 Pistons, particularly plunger pistons for compressors |
| 01/31/1990 | EP0353091A2 Vibration-damping mechanism for an automotive air conditioning compressor |
| 01/24/1990 | CN2051678U Reciprocating air compressor |
| 01/23/1990 | US4895498 Crank case chamber |