| Patents for F04D 1 - Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (3,447) |
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| 05/06/2009 | CN201232643Y Medium-coupling vertical self-priming centrifugal pump |
| 05/06/2009 | CN201232640Y Abrasion monitoring device for horizontal multistage pump and horizontal multiple stage centrifugal pump with the device |
| 04/29/2009 | CN201228670Y Vertical single-stage marine centrifugal pump |
| 04/29/2009 | CN201228669Y Single-stage single-suction horizontal vortex pump |
| 04/29/2009 | CN201228639Y Farm water pump |
| 04/29/2009 | CN101421519A Multi-stage compression system and method of operating the same |
| 04/23/2009 | WO2009051593A1 Two-stage rotodynamic blood pump |
| 04/22/2009 | CN201225332Y 自吸式水泵 Self-priming pumps |
| 04/09/2009 | DE102007048019A1 Liquid pump i.e. coolant pump, for internal-combustion engine, has radially inward projecting flow guide rib aligned towards rotation axis and provided in housing and/or section of suction pipe that is adjoined to transport wheel |
| 04/08/2009 | CN201218238Y Single-stage vertical centrifugal pump for vessel |
| 04/08/2009 | CN201218212Y Electric submersible centrifugal pump |
| 04/08/2009 | CN101403393A System and method for improving flow in pumping systems |
| 04/01/2009 | EP2041858A1 Cooling arrangement for an electrical machine |
| 03/31/2009 | US7510368 Screw-centrifugal pump |
| 03/25/2009 | CN201212487Y High-efficiency long-life multifunction vane pump |
| 03/25/2009 | CN201212480Y Vertical submersible pump without transmission shaft |
| 03/18/2009 | CN201209567Y Low temperature-lifting energy-conserving total lift submersible pump |
| 03/18/2009 | CN101387301A Vehicle-mounted medium and low voltage stepless conversion fire pump |
| 03/12/2009 | DE202008016643U1 Automatische Warnvorrichtung einer Saugscheibe Automatic warning device of a suction disc |
| 03/12/2009 | DE202007018745U1 Gewerbliche Geschirrspülmaschine Commercial dishwasher |
| 03/11/2009 | CN201206564Y Interstage seal structure of high-pressure multi-stage boiler feed pump |
| 03/11/2009 | CN201206555Y Marine vertical self-priming centrifugal pump |
| 03/11/2009 | CN101383541A Design method for highly efficient rear incline centrifugal type cooling external fan for high-voltage asynchronous motor |
| 03/10/2009 | US7500820 Impeller and fuel pump using the same |
| 03/04/2009 | CN201202683Y Submersible horizontal type multilevel centrifuge water discharge pump |
| 03/04/2009 | CN101377200A 泵装置和洗衣机 Pump unit and washing machine |
| 02/25/2009 | EP1838453A4 Degassing centrifugal apparatus with sensor |
| 02/25/2009 | EP1436510B1 Method for optimizing the operation of several compressor units in a natural gas compression station |
| 02/25/2009 | CN101372986A Impeller for fuel pump and fuel pump using the same |
| 02/18/2009 | EP2025942A2 Submersible multistage pump with impellers having diverging shrouds |
| 02/18/2009 | CN101368570A Integrated water supply pump |
| 02/18/2009 | CN101366619A 商用洗碗机 Commercial Dishwashers |
| 02/11/2009 | CN101363440A Multiple stage centrifugal pump with associate impeller and oil sealing chamber |
| 02/04/2009 | CN201190688Y Fluid pump |
| 01/28/2009 | CN201187456Y Large-scale vertical water pump for factory of nuclear power station |
| 01/28/2009 | CN201187455Y Centrifugal pump hydraulic model with small diameter and high lift |
| 01/28/2009 | CN101354043A Variable flow centrifugal pump |
| 01/28/2009 | CN100455824C Dynamic regulation method of axial force in multistage centrifugal pump with balance drum to balance axial force |
| 01/28/2009 | CN100455823C Dynamic regulation method of axial force in multistage centrifugal pump with balance disc to balance axial force |
| 01/28/2009 | CN100455817C Pressurizing cenrrifugal pump |
| 01/28/2009 | CN100455816C Regulator for dynamic regulation of axial force in multi-stage centrifugal pump |
| 01/28/2009 | CN100455815C Dynamic regulation method of axial force in multi-stage centrifugal pump with symmetrically configured vane wheel |
| 01/27/2009 | CA2338571C Multiple channel system, apparatus and method for transporting particulate material |
| 01/22/2009 | US20090022577 Bearing Screw |
| 01/22/2009 | DE102008031052A1 Kreiselpumpe für Fahrzeug Centrifugal pump for vehicle |
| 01/22/2009 | DE102007033644A1 Pitot tube jet pump has cartridge seal comprising seal mounting on pump casing and hub seal on rotor casing cap, cartridge seal having radial shaft sealing ring with sealing lip |
| 01/21/2009 | EP1739310B1 Pressurizing centrifugal pump |
| 01/21/2009 | CN201184309Y Multi-stage submersible electric pump for well |
| 01/14/2009 | CN100451350C Locking device of the stator pack of pumps |
| 01/14/2009 | CN100451342C Vertical shaft centrifugal pump, rotor for the pump, and air conditioner |
| 01/01/2009 | US20090003986 Pump and Pumping System Utilizing the Same |
| 12/24/2008 | CN201170186Y Emergency pump |
| 12/24/2008 | CN101328908A Apparatus for increasing air quantity to improve blower fan or wind power generator efficiency |
| 12/17/2008 | CN201166001Y Novel packing gland |
| 12/17/2008 | CN101324238A Blower with bearing tube |
| 12/17/2008 | CN101324236A Pump apparatus, assembling method of the same and washer system for vehicle |
| 12/10/2008 | CN201162708Y Single-stage double-suction centrifugal pump |
| 12/10/2008 | CN101319677A Super induction pipe pump |
| 12/04/2008 | DE102008014919A1 Druckbetätigter Mechanismus und denselben beinhaltende Wasserpumpe Pressure actuated mechanism and same-containing water pump |
| 12/03/2008 | CN201159176Y Stainless steel multilevel deep well pump |
| 11/27/2008 | DE102007024799A1 Gewerbliche Geschirrspülmaschine Commercial dishwasher |
| 11/26/2008 | EP1994285A2 High flow/dual inducer/high efficiency impeller for liquid applications including molten metal |
| 11/26/2008 | EP1649171B1 Locking device of the stator pack of pumps |
| 11/26/2008 | CN201155463Y Axial force balancing device centrifugal pump |
| 11/26/2008 | CN201155462Y Fluid circulation pump |
| 11/26/2008 | CN101312313A Waterproof construction of engine, discharge pump and air conditioner |
| 11/20/2008 | WO2008139023A1 Pump and a method for disassembling the pump |
| 11/20/2008 | US20080286096 Drain pump, and air conditioner provided therewith |
| 11/20/2008 | US20080283101 Double delivery pump for an electric household appliance and electric household appliance equipped therewith |
| 11/19/2008 | CN201152276Y Negative-pressure water storage tank type centrifugal pump |
| 11/19/2008 | CN101307768A Centrifugal compressor return passages using splitter vanes |
| 11/19/2008 | CN100434723C Radial impeller |
| 11/13/2008 | DE202008011793U1 Neuartige tiefstsaugende Tauchmotorpumpe Novel tiefstsaugende submersible pump |
| 11/12/2008 | CN201149002Y Telescopic water outlet segment structure of water pump |
| 11/12/2008 | CN201148987Y Spiral vortex self-suction pump handle |
| 11/12/2008 | CN201148980Y Barrel body type single-suction multilevel impeller symmetrical diffuser-type centrifugal pump |
| 11/12/2008 | CN201148979Y Axial force self-balanced type magnetic transmission multiple stage centrifugal pump |
| 11/12/2008 | CN201148978Y Water discharge pump |
| 11/12/2008 | CN101303027A Vertical type multilevel barrel bag pump |
| 11/12/2008 | CN101303024A High-efficiency long life multifunctional vane pump |
| 11/12/2008 | CN100432450C Centrifugal pump and method of manufacturing the same |
| 11/12/2008 | CN100432443C Centrifugal pump for deep well |
| 11/05/2008 | CN201144854Y Water ring vacuum pump driving end apparatus |
| 11/05/2008 | CN201144821Y Complete supporting type water pump |
| 11/05/2008 | CN201144820Y Improved structure of double-suction pump impeller |
| 11/05/2008 | CN201144819Y Deposit solution sweeper |
| 10/30/2008 | DE102007020218A1 Förderpumpe Feed pump |
| 10/29/2008 | EP1451472A4 Improved thrust bearing for multistage centrifugal pumps |
| 10/29/2008 | CN100429409C Drainage pump |
| 10/23/2008 | DE102007018793A1 Vorrichtung zur Fluidförderung Apparatus for conveying fluid |
| 10/22/2008 | CN201137583Y Vertical type water pump possessing guard tube-type clear water lubrication bearing structure |
| 10/22/2008 | CN101290013A Marine vertical type self-suction centrifugal pump |
| 10/22/2008 | CN101290012A Vertical type drive axle-free submerged pump |
| 10/15/2008 | CN201133353Y Double suction constant pressure pump |
| 10/14/2008 | US7435048 Drain pump, and air conditioner provided therewith |
| 10/02/2008 | US20080240904 Method of Pumping Gaseous Matter via a Supersonic Centrifugal Pump |
| 10/02/2008 | US20080240903 Method of Pumping Gaseous Matter via a Supersonic Centrifugal Pump |
| 10/02/2008 | US20080236799 Pump expansion vessel |
| 10/02/2008 | DE102008015707A1 Wasserpumpe und Verfahren zu ihrer Steuerung Water Pump and methods of control |
| 10/01/2008 | CN201125868Y Crude oil transportation centrifugal pump |