| Patents for F04D 29 - Details, component parts, or accessories (70,655) |
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| 02/20/1991 | EP0413462A2 Reduction of transient thermal stresses in machine components |
| 02/20/1991 | EP0413176A2 Metal plate stator case, particularly for radial centrifugal pumps |
| 02/19/1991 | US4993917 Gas compressor having dry gas seals |
| 02/19/1991 | CA1280388C Axial fan |
| 02/19/1991 | CA1280387C Blade support hub for an axial fan |
| 02/16/1991 | CA2022174A1 Reduction of transient thermal stresses in machine components |
| 02/14/1991 | DE3926456A1 Geblaese mit einem elektromotor Fan with an electric motor |
| 02/13/1991 | EP0412476A2 Vacuum pump with rotor and rotor bearings running under vacuum |
| 02/13/1991 | EP0412454A1 Blower |
| 02/13/1991 | EP0412165A1 Turboblower for lasers and laser oscillator |
| 02/13/1991 | CN1049220A Bearing arrangement |
| 02/12/1991 | US4992690 Combination motor endshield and pump housing |
| 02/12/1991 | US4992030 Sump draining apparatus |
| 02/12/1991 | US4992029 Miniature axial fan |
| 02/12/1991 | US4992027 Hydraulic control valve for fuel pumping system |
| 02/12/1991 | US4992023 Vehicle water pump with improved slinger |
| 02/12/1991 | US4992022 Side channel compressor |
| 02/12/1991 | CA1280100C Air turbulence blades for ceiling fans |
| 02/10/1991 | CA2022751A1 Dual auger top loading pumping system for manure tank wagon |
| 02/07/1991 | WO1991001584A1 Radial drive for implantable centrifugal cardiac assist pump |
| 02/07/1991 | WO1991001450A1 Radial-flow fan unit fitted inside an air-intake duct |
| 02/07/1991 | DE4022096A1 Valve element head for radial action pump - has stepped profile which gives linear delivery characteristics |
| 02/07/1991 | DE4021316A1 Axial delivery fan for box-shaped housing - with provision of deflection plate to improve efficiency |
| 02/07/1991 | DE3925396A1 Fuel delivery pump with impeller in pump chamber - has radial separation wall on impeller periphery forming delivery cells on both sides of separation wall |
| 02/06/1991 | EP0411428A2 Windscreen washer pump for vehicle |
| 02/06/1991 | EP0411134A1 Turbo-blower for laser and laser oscillator using the same |
| 02/06/1991 | EP0258440B1 Rotor of centrifugal compressor |
| 02/06/1991 | CN2070837U Double water cooling integral electric centrifugal pump |
| 02/06/1991 | CN2070836U Centrifugal pump driven by supple shaft outside waterpipe for depth well |
| 02/06/1991 | CN2070835U Simple shield pump |
| 02/06/1991 | CN1049049A Six-blade plastics fan with unequal blade intervals |
| 02/05/1991 | US4990794 Sensing-measuring device for continuous determination of cavitation in dynamic pumps |
| 02/05/1991 | US4990068 Unique grease lubricated ball bearing canned motor pump |
| 02/05/1991 | US4990056 Stator vane stage in axial flow compressor |
| 02/05/1991 | US4990055 Dynamic seal with flushing protection of static seal |
| 02/05/1991 | US4990054 Device incorporating micro-porous membrane for venting gases from seal assembly of a reactor coolant pump |
| 02/05/1991 | US4990053 Device for extending the performances of a radial compressor |
| 01/30/1991 | EP0410948A2 Dynamic seal with flushing protection of static seal |
| 01/30/1991 | EP0410924A2 Catalytic Converter |
| 01/30/1991 | EP0410271A2 Feed device for gaseous medium |
| 01/30/1991 | EP0409908A1 Impeller for an axial flow fan. |
| 01/30/1991 | CN1011437B Vertical submersible pump assembly |
| 01/28/1991 | CA2021174A1 Two row pipe diffusers with boundary layer control |
| 01/26/1991 | CA2021502A1 Diffuser |
| 01/24/1991 | DE3926152A1 Blade configuration in radial compressor - involves method of setting inclination of guide blades |
| 01/24/1991 | DE3925404A1 Dry gas seal for machine shaft - has aerodynamic lubrication with safeguard against running dry |
| 01/24/1991 | DE3924071A1 Rotary pump with sealing discs - has compact installation alongside shaft bearings |
| 01/24/1991 | DE3923874A1 Ventilator with motor driven bladed wheel - involves formation of axial flow channel to improve performance |
| 01/24/1991 | DE3922772A1 Radial flow extractor fan - has each blade root on same radial line as tip of adjacent one |
| 01/24/1991 | DE3920998A1 Creeping fluid water pump - addition of gel to water in fire pump |
| 01/23/1991 | EP0409157A2 Air filtering control system |
| 01/23/1991 | EP0409106A1 Sheet-metal centrifugal pump casing |
| 01/23/1991 | EP0408956A2 Vaned impeller |
| 01/23/1991 | EP0408792A1 Drag vacuum pump with at least one helical stage at the discharge end |
| 01/23/1991 | EP0408791A1 Drag pump with a bell-shaped rotor |
| 01/23/1991 | EP0408618A1 Rotary machine with non-positive displacement, for use as a pump, compressor, propulsion unit, generator or drive turbine |
| 01/23/1991 | CN2069940U 室内空气净化器 Indoor air purifiers |
| 01/22/1991 | US4986736 Pump impeller |
| 01/22/1991 | US4986733 Turbocharger compressor wheel assembly with boreless hub compressor wheel |
| 01/22/1991 | US4986345 Rotary heat exchanger |
| 01/22/1991 | US4985992 Method of making stator stages for compressors and turbines, and stator vanes and vane arrays produced thereby |
| 01/16/1991 | EP0408532A1 Tandem mounted face seals |
| 01/16/1991 | EP0408221A2 DC motor driven centrifugal fan |
| 01/16/1991 | EP0408010A1 Turbomachine with seal fluid recovery channel |
| 01/16/1991 | CN2069501U Vane wheel for big centrifugal blower |
| 01/16/1991 | CN2069500U Sealing device with isolation room |
| 01/16/1991 | CN2069499U Vertical soft axle deep well pump |
| 01/15/1991 | WO1991001586A1 A fan for an electrically operated machine |
| 01/15/1991 | US4984972 Centrifugal blood pump |
| 01/15/1991 | US4984966 Method of making liner |
| 01/15/1991 | US4984761 Electric fan cross-shaped base |
| 01/11/1991 | CA2020735A1 Radial drive for implantable centrifugal cardiac assist pump |
| 01/10/1991 | WO1991000430A1 Method and device for cleaning fan impellers |
| 01/10/1991 | WO1991000428A1 Submersible motor-driven pump |
| 01/10/1991 | WO1991000212A1 Lightweight airfoil |
| 01/10/1991 | DE3921549A1 Tauchmotorpumpe Submersible pump |
| 01/09/1991 | EP0407316A1 Rotary pump with electrical drive |
| 01/09/1991 | EP0406868A2 Centrifugal pump casing |
| 01/09/1991 | EP0406788A2 Open bladed impeller, particularly for centrifugal pump |
| 01/09/1991 | EP0406787A2 Case, particularly for centrifugal radial pumps, and method for manufacturing thereof |
| 01/09/1991 | EP0406418A1 Piping connection part of pump |
| 01/09/1991 | CN1011156B Double-head symmetrical reversible blade profile of fan |
| 01/08/1991 | US4983101 Drive mechanism for pumps |
| 01/08/1991 | CA2020585A1 Rotary pump with electric drive |
| 01/02/1991 | CN2068614U Dual purpose electric fan producing cold/hot wind |
| 01/02/1991 | CN1048251A Diffuser of centrifugal compressor |
| 01/02/1991 | CN1048248A Vibration-absorptive type muffler |
| 01/02/1991 | CA1278602C Submersible pump with expanded foam housing |
| 01/01/1991 | US4981420 Immersion pump |
| 01/01/1991 | US4981417 Pumps, compressors, fans |
| 01/01/1991 | US4981414 Method and apparatus for producing fluid pressure and controlling boundary layer |
| 01/01/1991 | US4981304 Reactor coolant pump auxiliary flexible vacuum seal for reactor coolant system vacuum degasification |
| 12/27/1990 | WO1990015640A1 Cardiac assist pump |
| 12/26/1990 | CN2068167U Removing ornament hanging fan cover |
| 12/26/1990 | CN1048081A Multi-blade rotor of air-fan |
| 12/25/1990 | US4979875 Centrifugal pump for the delivery of hot liquids |
| 12/19/1990 | EP0403363A1 Supports of a fuel pump situated inside a motor vehicle tank |
| 12/19/1990 | EP0403049A2 An assembly for facilitating inservice inspection of a reactor coolant pump rotor |
| 12/19/1990 | EP0403007A1 Volute for motor-driven fans |
| 12/19/1990 | EP0402870A1 Diffuser of a centrifugal compressor |