| 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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| 10/25/1994 | US5358373 High performance turbomolecular vacuum pumps |
| 10/19/1994 | EP0619860A1 Multiphase fluid treatment |
| 10/19/1994 | CN2179924Y Low-noise centrifugal fan |
| 10/18/1994 | US5355993 Grooved disk drive apparatus and method for transporting and metering particulate material |
| 10/11/1994 | US5354172 Molecular drag vacuum pump |
| 10/05/1994 | CN2178800Y Oblique-shape centrifugal fan cabable for reducing noise |
| 10/04/1994 | US5352099 Exhaust fan for water heater |
| 10/04/1994 | US5352089 Multi-blades fan device |
| 09/07/1994 | EP0614014A1 Radial compressor with a flow stabilising casing |
| 09/07/1994 | CN1091812A One-section multi-stage centrifugal booster |
| 09/06/1994 | US5344282 Molecular drag type vacuum pump |
| 08/23/1994 | US5340275 Rotary throat cutoff device and method for reducing centrifugal fan noise |
| 08/23/1994 | CA2031869C Gas removable pump for liquid |
| 08/10/1994 | EP0610051A1 Rib diffuser |
| 08/03/1994 | CN2173315Y Explosion-proof centrifugal ventilation machine |
| 08/03/1994 | CN1025574C 分子泵 Molecular pump |
| 08/02/1994 | US5334002 Gerotor pump with shiftable rotor boss |
| 06/29/1994 | EP0603665A1 Blower unit comprising a motor and a blower |
| 06/29/1994 | CN2170396Y Centrifugal ventilator with features of double-wind intake, changeable direction and low-noise |
| 06/28/1994 | CA2050685C Gas sampling device with improved mixed flow fan |
| 06/22/1994 | EP0602558A1 Apparatus for transporting a gaseous medium |
| 06/15/1994 | EP0601227A1 Stabilizing device for the increase of the surge margin of a compressor |
| 05/31/1994 | US5316441 Multi-row rib diffuser |
| 05/31/1994 | US5315886 Apparatus for drawing off and dispensing a predetermined quantity of a liquid |
| 05/18/1994 | CN2165268Y Turbo-centrifugal charged fan |
| 05/17/1994 | US5312225 Axially thrust-compensated turbo machine |
| 05/11/1994 | WO1994010450A1 Rotor for a transverse flow pump |
| 05/11/1994 | CN1086587A 压缩机 Compressor |
| 05/11/1994 | CA2147992A1 Rotor for a transverse flow pump |
| 04/27/1994 | EP0593747A1 Compressor assembly with staked shell. |
| 04/27/1994 | EP0593632A1 Radial fan. |
| 04/26/1994 | US5306117 Axial inlet beam-type compressor |
| 04/20/1994 | EP0592803A1 Gear driven multi-shaft compressor with return stages and radial-expander |
| 04/20/1994 | CN2162547Y Oil-sealed oil ring vacuum pump with double-stage axle |
| 04/13/1994 | CN2161756Y Transverse-flow type ventilator for section aging furnace |
| 03/30/1994 | EP0589300A1 Radial blower |
| 03/29/1994 | US5297926 Flow generating apparatus and method of manufacturing the apparatus |
| 03/29/1994 | US5297395 Air conditioner using rotary-type heat exchangers |
| 03/24/1994 | DE4231452A1 Radial turbocompressor with opposite rotation outlet housing - has disc diffusor guide blades rising from inner to outer boundary dia. in impeller rotation sense |
| 03/23/1994 | CN2159467Y High effective, energy saving and low noise blower |
| 03/23/1994 | CN1084257A Double centrifugal fluid transporting method and appliance |
| 03/22/1994 | US5296769 Air guide assembly for an electric motor and methods of making |
| 03/17/1994 | WO1994005913A1 Compressor |
| 03/17/1994 | CA2144181A1 Compressor |
| 03/08/1994 | US5292479 Laminar air flow |
| 03/02/1994 | EP0486539B1 Fan with electric motor |
| 02/23/1994 | EP0583895A1 Laminar flow fan and electrical apparatus incorporating fan |
| 02/15/1994 | US5286164 Radial blower with blower wheel rotating in spiral housing |
| 02/09/1994 | CN2155449Y Multi-functional fan with the function of grinding |
| 02/02/1994 | CN2154925Y Multi-staged booster fan |
| 01/20/1994 | DE4222950A1 Rotary heat exchanger utilising rotor of cross-flow ventilator e.g. for vehicle - presents reduced impedance to air flow for redn. of energy consumption and acoustic noise level in operation |
| 12/16/1993 | DE4321175A1 Meridian compressor for turbo gas generator - has guide device with opposite pairs of deflection cylinders, and drum guide with opposite pairs of blade rows |
| 12/16/1993 | DE4238895C1 Electric ventilation fan for air-conditioning duct - has peripheral seal for suction plate and vibration damping of fan motor mounting, to reduce noise |
| 12/16/1993 | DE4218826A1 Radial blower for building ventilation - has flow reversal chamber and impeller on vertical or horizontal axis |
| 12/07/1993 | US5267844 Powered work producing apparatus |
| 11/17/1993 | CN2146589Y Diffusion fan |
| 11/03/1993 | EP0568069A2 Turbomolecular vacuum pumps |
| 11/03/1993 | EP0567874A1 Flow machine for gas compression |
| 10/28/1993 | WO1993021440A1 Compressor assembly with staked shell |
| 09/08/1993 | CN2141845Y Air booster |
| 08/31/1993 | US5240371 Multiple disc fan with rotatable casing |
| 08/17/1993 | CA2023750C Inline centrifugal fan |
| 08/11/1993 | EP0554600A1 Balloon inflator |
| 07/28/1993 | EP0552978A2 Air guide assembly for the electric motor of a vacuum cleaner |
| 07/25/1993 | CA2083897A1 Air guide assembly for an electric motor and methods of making |
| 07/22/1993 | WO1993014318A1 Compact controllable vane pump |
| 07/21/1993 | CN1021662C Fan that can be coupled |
| 07/20/1993 | US5228832 Mixed flow compressor |
| 07/15/1993 | DE4200305A1 Regelbare fluegelzellenpumpe in kompakter bauweise Adjustable fluegelzellenpumpe in compact construction method |
| 07/08/1993 | WO1993013318A1 Multiphase fluid treatment |
| 07/07/1993 | EP0549579A1 Rotary pump |
| 06/30/1993 | CN2137298Y Centrifugal ventilator |
| 06/24/1993 | CA2058395A1 Axial inlet beam-type compressor |
| 06/16/1993 | CN2136349Y Dedusting fan |
| 06/15/1993 | US5219271 High capacity, high efficiency pump |
| 06/09/1993 | EP0545719A1 Vacuum pumps |
| 06/09/1993 | EP0545706A1 Vacuum pumps |
| 05/27/1993 | WO1993010358A1 Method of forming air flow in outlet system of a centrifugal compressor and centrifugal compressor |
| 05/11/1993 | US5209639 Radial fan with an axial housing |
| 05/04/1993 | US5207809 Grease extractor |
| 04/21/1993 | CN1071254A Apparatus for drawing off and dispensing predetermined and constant quantity of liquid |
| 04/15/1993 | WO1993007391A1 Pump |
| 04/14/1993 | EP0537128A2 Pump |
| 04/14/1993 | CN1070991A Radial-flow turbine molecular pump |
| 04/10/1993 | CA2077582A1 Pump |
| 04/06/1993 | US5199847 Balloon inflator with involute chamber and bypass nozzle |
| 03/30/1993 | US5197850 Cross flow fan system |
| 03/10/1993 | EP0530518A1 Turbo machine |
| 03/09/1993 | US5192183 Laminar flow fans |
| 03/04/1993 | DE4129211A1 Motor-driven radial ventilator fan for air conditioner - has pyramidal deflector funnel extending outwards in downstream direction from rim of intake nozzle to casing around fan wheel outlet |
| 03/04/1993 | DE4129210A1 Motor-driven radial ventilator fan for air conditioner - has adjustable axial gap, broadened or narrowed according to volume flow set-point by intake-pressure-dependent fan wheel displacement |
| 03/03/1993 | EP0529099A1 Multi-layer disk fan with blades |
| 03/02/1993 | US5191247 Substantially noiseless fan for internally cooling electric motors |
| 02/18/1993 | DE4127134A1 Diagonal fan with relatively small taper of hub - features decrease in cross=section of air duct between coaxial conical structures of truncated-conical blower |
| 02/10/1993 | CN2126878Y Middle, high voltage three-way blade centrifugal energy-saving fan |
| 02/03/1993 | EP0525366A2 Grease extractor |
| 01/21/1993 | WO1993001414A1 Radial fan |
| 01/13/1993 | EP0522886A2 Air compression system |
| 01/13/1993 | CA2073635A1 Air compression system |
| 01/07/1993 | DE4223930A1 Tangential flow fan for gas turbine engine - has rotor drums coupled to separate shafts with guide drum between them having suction and pressure blades |