| 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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| 03/26/2009 | US20090081031 Vertical vapor compressor |
| 03/26/2009 | US20090081022 Radially Staged Microscale Turbomolecular Pump |
| 03/25/2009 | EP2039940A2 Radially staged microscale turbomolecular pump |
| 03/25/2009 | CN201212488Y High-efficiency energy-conserving multifunction centrifugal fan |
| 03/25/2009 | CN101392757A Centrifugal compressor and vapour recompression method utilizing the compressor |
| 03/19/2009 | WO2009034006A1 Compressor unit |
| 03/19/2009 | WO2009033699A1 Drum ventilator having a direct drive |
| 03/19/2009 | WO2008128797A3 Ventilation unit for independently cooling an electric motor |
| 03/11/2009 | CN201206556Y Vacuum pressure air pump with built-in blade sealing arrangement |
| 03/11/2009 | CN100467876C Multistage centrifugal compressor and method for assembling the same |
| 03/05/2009 | WO2009027485A1 Current leadthrough for a vacuum pump |
| 03/05/2009 | US20090060708 Radial flow compressor for a turbo-supercharger |
| 03/05/2009 | CA2695506A1 Current feedthrough for a vacuum pump |
| 03/04/2009 | EP1690010B1 Multistage centrifugal compressor |
| 03/04/2009 | CN101379298A Compressor unit |
| 03/04/2009 | CN101377205A Fan for conveying media |
| 03/04/2009 | CN101377201A Centrifugal fan |
| 03/04/2009 | CN100465460C A centrifugal fan |
| 02/18/2009 | EP2024646A1 Multi-stage turbo compressor |
| 02/18/2009 | CN201196170Y Turbosupercharger air compressor with silencing function |
| 02/18/2009 | CN201196165Y Rotary vane type pressure-expansion gas compressor with blade |
| 02/18/2009 | CN100462564C Crossflow fan |
| 02/12/2009 | US20090038333 Turbo fan for blowing and refrigerator having the same |
| 02/11/2009 | CN100460688C Eccentric fan for indoor set of cabinet air conditioner |
| 02/05/2009 | US20090035132 Housing for a centrifugal fan, pump, or turbine |
| 02/04/2009 | CN201190688Y Fluid pump |
| 02/04/2009 | CN101358602A Energy-conserving type chlorine-hydrogen compressor |
| 02/04/2009 | CN100457214C Double-headed blower and its volute |
| 01/29/2009 | US20090028719 Multi-Blade Fan |
| 01/29/2009 | US20090028713 Centrifugal multiblade fan |
| 01/28/2009 | EP2018480A1 Turbocharger |
| 01/28/2009 | CN201187473Y Residual heat discharge pump for nuclear power station |
| 01/28/2009 | CN100455819C Compressor jet flow path structure |
| 01/22/2009 | WO2009011241A1 Gas compression device and method of controlling gas compression device |
| 01/22/2009 | US20090022584 Pump for hydromill |
| 01/21/2009 | CN201184330Y Automatic control turbine synchronous discharging and sucking pump |
| 01/21/2009 | CN201184329Y Cabinet type centrifugal ventilation machine with low noise |
| 01/21/2009 | CN100453817C Multi-stage friction vacuum pump |
| 01/14/2009 | CN201180682Y Gas distributor suitable for isothermal centrifugal compressor |
| 01/14/2009 | CN201180675Y Corrosion-resistant water ring vacuum pump |
| 01/14/2009 | CN100451345C Centrifugal compressor having air removal jet box structure |
| 01/14/2009 | CN100451344C Centrifugal fan and its fan blade |
| 01/07/2009 | CN201176958Y Novel tower type fan |
| 01/07/2009 | CN201176943Y Built-in pneumatic and air exhaust pump |
| 01/06/2009 | CA2476097C Vacuum pump for agricultural seeding equipment |
| 12/31/2008 | EP2009286A1 Shaft sealing for a turbo engine |
| 12/31/2008 | CN201173197Y High pressure volution blast engine |
| 12/31/2008 | CN201173196Y Multilevel aluminum blade wheel sewage disposal centrifugal blower |
| 12/31/2008 | CN201173195Y Improved transverse-flow type fan structure |
| 12/31/2008 | CN100447426C Centrifugal fan |
| 12/30/2008 | CA2447421C Air evacuating ventilator |
| 12/24/2008 | DE202008014087U1 Querstromventilator, Lüftungsgerät mit Querstromventilator Cross-flow fan, ventilation unit with cross-flow fan |
| 12/24/2008 | CN201170191Y Heat radiation energy-saving pressure pump |
| 12/17/2008 | EP2003340A2 Multi-blade fan |
| 12/17/2008 | EP1706645B1 Multi-stage friction vacuum pump |
| 12/17/2008 | CN101324238A Blower with bearing tube |
| 12/17/2008 | CN100443734C Structure for connecting compressor wheel and shaft |
| 12/17/2008 | CN100443730C Compressor |
| 12/11/2008 | WO2008149773A1 Seal device for rotary fluid machine and rotary fluid machine |
| 12/11/2008 | WO2008149704A1 Seal device for rotary fluid machine and rotary fluid machine |
| 12/10/2008 | EP1999376A1 Method for operating a compressor unit and associated compressor unit |
| 12/10/2008 | EP1999375A1 Compressor unit |
| 12/10/2008 | EP1999374A1 Compressor unit |
| 12/10/2008 | CN101317720A Air inflation apparatus |
| 12/10/2008 | CN101317719A Air inflation apparatus |
| 12/10/2008 | CN101317718A Air inflation apparatus |
| 12/10/2008 | CN100441877C Centrifugal fan, and fan frame |
| 12/09/2008 | US7461507 High response compact turbocharger |
| 12/03/2008 | EP1997548A1 Suction filter |
| 12/03/2008 | CN100439707C A pumping system |
| 11/26/2008 | EP1995463A2 Multi stage compressor unit with cooling device |
| 11/26/2008 | CN201155476Y Centrifugal air blower for reducing radiation energy consumption |
| 11/26/2008 | CN101311549A Barrier sealing system for centrifugal compressors |
| 11/26/2008 | CN101310650A Aerating device |
| 11/26/2008 | CN100436836C Device and method enabling noise minimization of blower filter |
| 11/20/2008 | US20080286095 Centrifugal Compressor Return Passages Using Splitter Vanes |
| 11/19/2008 | CN201152266Y Double stage pressure charging turbine, compressor unit for petroleum and chemical industry tail gas reclamation |
| 11/19/2008 | CN201152265Y Small power DC blower |
| 11/19/2008 | CN101307768A Centrifugal compressor return passages using splitter vanes |
| 11/19/2008 | CN100434700C Motor-driven centrifugal air compressor with internal cooling airflow |
| 11/13/2008 | US20080281481 Robotic Vacuum Cleaner |
| 11/13/2008 | US20080279682 Impeller Assembly and Method of Using Same |
| 11/13/2008 | US20080279680 Multistage Centrifugal Compressor |
| 11/12/2008 | EP1990545A1 Radial- flow impeller (variants), a blade therefor and a tube axial fan provided therewith |
| 11/12/2008 | EP1990544A2 Multistage centrifugal compressor |
| 11/12/2008 | CN101303025A High-efficiency and energy-saving multifunctional centrifugal blower fan |
| 11/12/2008 | CN101303019A Fan type air pump |
| 11/12/2008 | CN100432449C Impeller cover of centrifugal fan |
| 11/06/2008 | WO2008133014A1 Impeller for multi-blade fan |
| 11/05/2008 | CN201144833Y Vacuum condensation pump |
| 11/05/2008 | CN101298871A Rotary vane type air compressor with blade to enlarge pressure |
| 11/05/2008 | CN100430607C Multistage centrifugal compressor |
| 11/05/2008 | CN100430606C High-speed cantilever centrifugal compressor rotor mechanism |
| 10/30/2008 | WO2008128879A1 Fan for an exhaust hood |
| 10/30/2008 | WO2008128797A2 Ventilation unit for independently cooling an electric motor |
| 10/29/2008 | EP1985861A2 Blower apparatus of the CPAP/NIPPV type |
| 10/29/2008 | EP1984628A1 Multi-stage compression system and method of operating the same |
| 10/28/2008 | US7444206 Robotic vacuum cleaner |
| 10/23/2008 | WO2008125630A1 Side channel compressor |
| 10/22/2008 | EP1718868B1 A pumping system |