| Patents for F04D 17 - Radial-flow pumps specially adapted for elastic fluids, e.g. centrifugal pumps; Helico-centrifugal pumps specially adapted for elastic fluids (4,320) |
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| 05/26/1999 | CN2320824Y Single-stage centrifugal pump without radial force |
| 05/20/1999 | DE19848406A1 Molecular pump with ribbed rotor construction |
| 05/19/1999 | CN2319608Y Centrifugal fan combined self-sucking pump |
| 05/19/1999 | CN1216804A Two piece labyrinth seal for centrifugal compressor balance piston |
| 05/18/1999 | US5903941 Air control system for an air bed |
| 05/12/1999 | EP0915258A1 Transverse fan with flow stabilizer |
| 05/12/1999 | CN2318436Y Thin clamp type fan coiler |
| 05/12/1999 | CN2318434Y Multistage supercharging fan |
| 05/06/1999 | EP0913583A1 Two-piece labyrinth seal for centrifugal compressor balance piston |
| 05/05/1999 | CN2317342Y All plastic corrosion-proof centrifugal fan |
| 05/05/1999 | CN2317341Y Transverse-flow type fan |
| 04/29/1999 | WO1999013223B1 Motor-driven centrifugal air compressor with internal cooling airflow |
| 04/28/1999 | CN2316491Y Wear-proof air-distributing ring for vane wheel of centrifugal fan |
| 04/21/1999 | CN2315339Y Rotary blade electric fan for propelling mosquito |
| 04/21/1999 | CN2315338Y Locking sheet of fan axle centre |
| 04/14/1999 | EP0908630A1 A small fan unit, especially used as circuit board fan |
| 04/14/1999 | CN2314131Y Axial fan of air conditioner |
| 04/14/1999 | CN2313469Y Adjustable aerated mattress |
| 04/13/1999 | US5893705 Integrated motor and blower apparatus having two back-to-back coupled rotors |
| 04/08/1999 | WO1999017022A1 A fluid machinery, a flange for fluid machinery, and a method for manufacturing them |
| 04/01/1999 | WO1999015793A1 Compound pump |
| 03/31/1999 | CN2312355Y Means for fixing magnetic ring of rotor of heat radiation fan |
| 03/30/1999 | US5887281 Air filtration and control system including head gear |
| 03/25/1999 | WO1999013932A1 Medical ventilator |
| 03/24/1999 | CN2311640Y Rotary leaf fan with escape wheel mechanism |
| 03/24/1999 | CN2311639Y Radiating fan |
| 03/18/1999 | WO1999013223A1 Motor-driven centrifugal air compressor with internal cooling airflow |
| 03/17/1999 | CN2310882Y Built-up fan valute casing |
| 03/11/1999 | WO1999011984A1 A method and apparatus for minimising noise from fan filter unit |
| 03/11/1999 | DE19737312A1 Rotary pump running wheel for sewage processing, composting etc. |
| 03/11/1999 | CA2302177A1 A method and apparatus for minimising noise from fan filter unit |
| 03/10/1999 | EP0789815B1 Friction-type vacuum pump with cooling system |
| 03/10/1999 | CN2310193Y 吊扇悬吊装置 Ceiling suspension device |
| 03/10/1999 | CN2310187Y Hand, electric two-purpose blower |
| 03/10/1999 | CN2310186Y Electric fan swing support |
| 03/10/1999 | CN1210207A Method and apparatus for minimising noise from fan filter unit |
| 03/10/1999 | CN1210196A Displacement machine for compressible media |
| 03/03/1999 | EP0899424A1 Scroll compressible fluid displacement machine |
| 03/03/1999 | CN2309450Y Electric fan capable of cold and hot air switching |
| 03/03/1999 | CN1209509A Method for increasing pumping-effciency and reducing specific gravity |
| 02/26/1999 | CA2245605A1 Displacement machine for compressible media |
| 02/25/1999 | WO1999009624A1 Cross-flow blower with braces |
| 02/24/1999 | EP0898082A1 Turbomolecular pump |
| 02/24/1999 | EP0898081A1 Turbomolecular Pump |
| 02/24/1999 | CN2308749Y Fan structure able to automatically enclosing vane clearence |
| 02/24/1999 | CN1208822A Fluid-guiding means for air-blower |
| 02/17/1999 | CN2307946Y Electric temp. controller capable of assembled by oneslef |
| 02/17/1999 | CN2307945Y Electric fan with adjustable range and blowing to every direction at the same time |
| 02/17/1999 | CN2307944Y Rotary louver electric fan with anion generator for purifying air |
| 02/10/1999 | CN2307135Y Axial flow, centrifugal double functional fan |
| 02/09/1999 | US5870420 Cross-flow blower with braces |
| 02/09/1999 | US5868551 Tangential fan cutoff |
| 02/03/1999 | CN2306348Y 水风机 Water Fan |
| 02/03/1999 | CN1206813A Flow stabilizer for transversal fan |
| 01/27/1999 | EP0893604A1 Turbomolecular pump |
| 01/27/1999 | CN2305508Y Improved structure of suspending fan |
| 01/27/1999 | CN2305507Y Centrifugal multiple air outlet air exhauster |
| 01/26/1999 | US5864190 Double or multiple auger suction unit for hoods, ovens and similar appliances |
| 01/21/1999 | WO1999002864A1 High pressure centrifugal compressor |
| 01/20/1999 | CN2304776Y Cooling and heating blower for hoisting machine |
| 01/20/1999 | CN2304775Y Vibration absorbing circular pad structure of hanging fan |
| 01/20/1999 | CN2304774Y Lateral flow air exhaust |
| 01/14/1999 | WO1999001669A1 Apparatus for conditioning air |
| 01/13/1999 | CN2303957Y Collector-regulatable centrifugal fan |
| 01/13/1999 | CN2303956Y Vortex composite fan |
| 01/06/1999 | CN1204011A Fan |
| 12/30/1998 | EP0887557A1 Free rotor stabilization |
| 12/30/1998 | EP0887554A1 Flow stabilizer for transverse fan |
| 12/30/1998 | CN1203320A Free rotor stabilization |
| 12/23/1998 | CN2301561Y Lamp type centrifugal ceiling fan |
| 12/15/1998 | US5848875 Combinational air blower and exhauster |
| 12/15/1998 | US5848873 Vacuum pumps |
| 12/09/1998 | CN2299954Y Large wind-receiving face blade windmill |
| 12/09/1998 | CN1201514A Outlet unit for underfloor air conditionor and underfloor air conditioning system using same |
| 12/02/1998 | CN2299176Y Improved structure of exhausting fan |
| 11/24/1998 | US5839397 Engine cooling system and construction machine |
| 11/24/1998 | US5839205 Electric fan using multiple fan blades to raise air output pressure |
| 11/12/1998 | WO1998050702A1 Tangential fan cutoff |
| 10/28/1998 | EP0874159A2 Friction vacuum pump with Gaede pump stage |
| 10/27/1998 | US5827046 Transverse fan, method of manufacturing the same and apparatus therefor |
| 10/21/1998 | CN2295066Y Fan with wear-resistant dust-resistant vane |
| 10/21/1998 | CN1196450A Method for building high flow low velocity flow field and device for transporting fluid using said method |
| 10/07/1998 | CN1195078A Two-stage centrifugal compressor |
| 09/30/1998 | EP0837989A4 A rotor |
| 09/24/1998 | WO1998041762A2 Toroidal turbine |
| 09/23/1998 | EP0749533B1 Compressor |
| 09/23/1998 | EP0619860B1 Multiphase fluid treatment |
| 09/23/1998 | CN2292179Y Scavenge fan |
| 09/22/1998 | US5810557 Fan wheel for an inline centrifugal fan |
| 09/16/1998 | CN1193377A 叶轮 Impeller |
| 09/15/1998 | US5807071 Variable pipe diffuser for centrifugal compressor |
| 09/08/1998 | US5803707 Slide-in cross current ventilator |
| 08/26/1998 | CN2289081Y Centrifugal pump substituted handlance exhaust |
| 08/26/1998 | CN1191278A Centrifugal multivane blower |
| 08/25/1998 | US5797727 Impeller mounting for electrically driven air pump to reduce vibration |
| 08/18/1998 | US5795138 Compressor |
| 08/13/1998 | DE19706004A1 Fan for conducting fluids through pipe with motor-driven rotary elements |
| 08/12/1998 | CN2287679Y Air flow regulator for blower |
| 08/11/1998 | US5791159 Compression apparatus |
| 08/05/1998 | EP0839284A4 Multi-stage rotary fluid handling apparatus |