| Patents for F04C 28 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids (4,928) |
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| 11/26/1997 | EP0809032A1 Scroll compressor with variable displacement mechanism |
| 11/26/1997 | EP0608311B1 Inlet control combination for a compressor system |
| 11/25/1997 | US5690475 Scroll compressor with overload protection |
| 11/25/1997 | US5689960 Method of adjusting an air conditioner compressor for a vehicle |
| 11/20/1997 | DE19713770A1 Climate control unit for a motor vehicle |
| 11/19/1997 | EP0807209A1 Protection device for a high side co-rotating scroll compressor |
| 11/18/1997 | US5688109 Oil-level controller for compressor |
| 11/18/1997 | CA2121207C Speed detector of scroll-type fluid machine |
| 11/12/1997 | EP0806569A2 Scroll compressor |
| 11/06/1997 | DE19711448A1 Cell compressor for air conditioning in cars |
| 11/04/1997 | US5683237 Horizontal type scroll compressor having inlet ports at an upper level of the casing |
| 11/04/1997 | US5683236 Anti-reverse rotation valve for scroll compressor |
| 11/04/1997 | CA2123325C Reverse phase and high discharge temperature protection in a scroll compressor |
| 10/28/1997 | US5681155 Scroll type compressor having an elastic body in the driven crank mechanism |
| 10/21/1997 | US5678985 Scroll machine with capacity modulation |
| 10/07/1997 | US5674063 Screw fluid machine and screw gear used in the same |
| 10/07/1997 | US5674062 Hermetic compressor with heat shield |
| 10/07/1997 | US5674061 Scroll compression having a discharge muffler chamber |
| 10/07/1997 | US5674058 Scroll-type refrigerant compressor |
| 10/01/1997 | EP0798463A2 Oil-free scroll vacuum pump |
| 09/25/1997 | WO1997035112A1 Anti-reverse rotation valve for scroll compressor |
| 09/17/1997 | EP0701662B1 Positive displacement machine with electronic motor synchronisation |
| 09/10/1997 | CN1158945A Scroll machine with capacity modulation |
| 09/10/1997 | CN1158944A Eddy gas compressor with by-pass valve |
| 09/04/1997 | WO1997032130A1 Vapor recovery pump |
| 09/04/1997 | CA2247054A1 Vapor recovery pump |
| 09/03/1997 | EP0793021A1 Vacuum pumps |
| 09/03/1997 | EP0792434A1 System and method for performing cooling |
| 09/03/1997 | EP0792416A1 Rotary screw compressor with unloading means |
| 08/27/1997 | EP0791201A1 Vibration monitoring system |
| 08/26/1997 | US5660531 Gear pump with minimized canitation |
| 07/23/1997 | EP0633980B1 Scroll machine with overheating protection |
| 07/22/1997 | US5649816 Hermetic compressor with heat shield |
| 07/16/1997 | EP0784173A2 Safety relief valve assembly for a fluid displacement apparatus |
| 07/09/1997 | EP0711387B1 Vacuum pump with a gas ballast device |
| 07/02/1997 | EP0781926A1 Scroll machine with capacity modulation |
| 07/01/1997 | US5642989 Booster compressor system |
| 06/25/1997 | CN1152675A Rolling-wheel type expansion machine |
| 06/24/1997 | US5641279 Swing type rotary compressors having a cut-off portion on the roller |
| 06/24/1997 | US5641278 Scroll compressor |
| 06/18/1997 | EP0779431A2 Valve mechanism for a compressor |
| 06/17/1997 | US5639225 Scroll type compressor |
| 06/11/1997 | EP0778451A2 Motor cooling in a refrigeration system |
| 06/04/1997 | EP0777052A2 Scroll compressor capacity control valve |
| 05/28/1997 | EP0775826A1 Screw compressor |
| 05/28/1997 | EP0775262A1 Regulating device for a screw rotor machine intended for supercharging internal combustion engines |
| 05/21/1997 | EP0714482B1 Vacuum pump with oil separator |
| 05/14/1997 | CN1149674A Rotary compressor braked by reverse rotation |
| 05/09/1997 | WO1997016649A1 Scroll compressors |
| 05/09/1997 | WO1997016648A1 Improvements in and relating to single screw compressors |
| 05/09/1997 | WO1997016647A1 Improved compressor arrangement and method of working the same |
| 05/09/1997 | WO1997016644A1 Pump having relief valve seat free of direct structural restraint |
| 05/07/1997 | EP0771948A1 Capacity control device for variable-capacity compressor |
| 05/07/1997 | CN1034830C Scroll type compressor |
| 05/02/1997 | EP0742869A4 Scroll-type fluid displacement device having high built-in volume ratio and semi-compliant biasing mechanism |
| 04/29/1997 | US5624236 Oil cooled air compressor |
| 04/23/1997 | CN1148141A Multi-cylinder rotary air compressor |
| 03/25/1997 | US5613841 Capacity modulated scroll machine |
| 03/19/1997 | EP0763660A2 Variable capacity vane compressor with linear actuator |
| 03/19/1997 | CN1145455A Screw compressor with liquid lock preventing slide |
| 03/18/1997 | US5611674 Capacity modulated scroll machine |
| 03/12/1997 | EP0761975A1 Gas compressor |
| 03/12/1997 | EP0761972A1 Vane compressor having reduced pressure pulses |
| 03/11/1997 | US5610339 Method for collecting machine vibration data |
| 03/11/1997 | US5609475 Compressor with a hypotrochoidal design having a fluid delivery which is not solely dependent on a drive RPM |
| 03/05/1997 | EP0692074B1 Scroll gas compression apparatus |
| 03/04/1997 | US5607288 Scroll machine with reverse rotation protection |
| 02/20/1997 | WO1997006350A1 Reverse rotation preventing clutch |
| 02/12/1997 | EP0758055A1 Apparatus and method for electronically controlling inlet flow and preventing backflow in a compressor |
| 02/11/1997 | US5602757 Vibration monitoring system |
| 01/29/1997 | CN1141393A Refricerant compressor with rotation detecting means |
| 01/22/1997 | EP0754862A1 A fluid displacement apparatus with variable displacement mechanism |
| 01/22/1997 | EP0754860A2 Oil-free scroll vacuum pump |
| 01/22/1997 | CN1141070A Oil separation and bearing lubrication in a high side co-rotating scroll compressor |
| 01/22/1997 | CN1140803A Scroll compressor having suction check valve |
| 01/21/1997 | US5595067 Energy pump |
| 01/14/1997 | US5593297 Scroll type compressor |
| 01/14/1997 | US5593294 Powered work producing apparatus |
| 01/08/1997 | EP0752531A1 Apparatus for rapid evacuation of a vacuum chamber |
| 01/07/1997 | US5591019 Vapor recovery pump |
| 01/07/1997 | US5591014 Scroll machine with reverse rotation protection |
| 01/02/1997 | DE19522515A1 Compressible material displacement machine esp. dual-rotor type dry-running evacuation pump stopping method |
| 01/01/1997 | CN1033713C Vortex volume-type fluid displacement device |
| 12/31/1996 | US5588806 Liquid ring machine and process for operating it |
| 12/18/1996 | EP0748420A1 Rotary screw compressor with thrust balancing means utilizing different pressure levels and a method for operating such a compressor |
| 12/17/1996 | US5584677 Scroll compressor having a bevelled facing section |
| 12/17/1996 | US5584673 Device for reducing the pressure of a compressor in the idling and shutdown mode |
| 12/12/1996 | DE19521922A1 Load control for screw compressor |
| 12/11/1996 | EP0747598A2 Capacity modulated scroll machine |
| 12/11/1996 | EP0747597A2 Capacity modulated scroll machine |
| 12/11/1996 | EP0746685A1 Scroll compressor drive having a brake |
| 12/11/1996 | CN1137614A Capacity modulated scroll machine |
| 12/10/1996 | US5582513 Scroll type fluid machine having a biased drive bush |
| 12/10/1996 | US5582511 Scroll machine having discharge port inserts |
| 12/05/1996 | WO1996038670A1 Variable-displacement screw-type compressor |
| 12/05/1996 | DE19519262A1 Schraubenverdichter mit einstellbarem Fördervolumen Screw compressor with adjustable delivery |
| 12/04/1996 | EP0745190A1 Oil separation and bearing lubrication in a high side co-rotating scroll compressor |
| 12/03/1996 | US5580230 Scroll machine having an axially compliant mounting for a scroll member |
| 12/03/1996 | US5580229 Scroll compressor drive having a brake |
| 12/03/1996 | CA1338762C Scroll-type fluid apparatus for variable speed operation |