| Patents for F04D 1 - Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (3,447) |
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| 05/09/2013 | US20130115047 Impeller vane with leading edge enhancement |
| 05/08/2013 | CN102042233B Water circulating pump, manufacturing method thereof, and heat pump apparatus |
| 05/08/2013 | CN101943169B Centrifugal pump used for three-dimensional particle image velocimetry (PIV) measurement |
| 05/07/2013 | US8435016 Vertical shaft pumping system with lubricant impeller arrangement |
| 05/02/2013 | US20130105156 Artificial lift system for well production |
| 05/01/2013 | CN202914319U Multi-stage pump |
| 05/01/2013 | CN103080556A Dual-flow centrifugal pump |
| 04/24/2013 | EP2582983A1 Dual-flow centrifugal pump |
| 04/24/2013 | CN202900790U Centrifugal water pump |
| 04/24/2013 | CN202900676U Novel structure three-level turbine pump |
| 04/24/2013 | CN202900675U 螺旋式离心泵 Screw centrifugal pumps |
| 04/24/2013 | CN103062070A Rotary jet pump |
| 04/24/2013 | CN103062069A Improvement of single-stage single-suction type long axis submerged centrifugal pump |
| 04/24/2013 | CN103062068A Radial dual-cutting centrifugal pump |
| 04/24/2013 | CN103062067A Constant pressure fire pump |
| 04/24/2013 | CN103062066A Low-rotating-speed corrosion-resistant abrasion-resistant centrifugal pump |
| 04/24/2013 | CN102367799B 螺旋管泵 Spiral pump |
| 04/18/2013 | WO2013053794A1 Pump arrangement |
| 04/18/2013 | US20130094954 Blower device |
| 04/18/2013 | US20130094948 Intake charged pump for delivering a liquid |
| 04/10/2013 | CN202867234U Double-stage centrifuging water-turbine pump |
| 04/10/2013 | CN202867233U Chemical pump |
| 04/03/2013 | CN202851367U Conveniently-disassembling type hand pressure twin-stage centrifugal pump |
| 04/03/2013 | CN103016353A Front-stage double suction type suction casing structure for sectional multi-stage pump |
| 04/03/2013 | CN103016352A Double-suction pump with high suction pressure |
| 04/03/2013 | CN103016351A Single-stage double-suction high-speed pump for oil pipeline |
| 04/03/2013 | CN103016350A Centrifugal pump |
| 03/28/2013 | US20130078087 Centrifugal coolant pump |
| 03/28/2013 | US20130077242 Fan structure and electronic device applied with the same |
| 03/27/2013 | CN202833202U Dry-diving dual-purpose multistage feed pump |
| 03/27/2013 | CN202833186U Double-suction multi-stage horizontal-type mid-split pump |
| 03/27/2013 | CN202833185U Double-suction multi-stage horizontal mid-split pump |
| 03/27/2013 | CN202833184U Under liquid surface sewage pump |
| 03/27/2013 | CN102996503A Multistage sectional type centrifugal pump with function of balancing axial force by self |
| 03/26/2013 | US8403627 Water pump for pumping coolant in a low temperature and in a high temperature circuit |
| 03/20/2013 | EP2569545A2 Vibration damping device for vertically cantilevered pump assemblies |
| 03/20/2013 | CN202811487U Small-displacement water pump |
| 03/20/2013 | CN202811375U Double-stage and double-discharge graphite pump |
| 03/20/2013 | CN102979733A 水泵 Pumps |
| 03/20/2013 | CN101115567B Degassing centrifugal apparatus with sensor |
| 03/13/2013 | CN202789560U Multiple-stage centrifugal pump |
| 03/13/2013 | CN202789559U Fully-enclosed suspension type multistage centrifugal pump for transporting high-pressure Freon |
| 03/13/2013 | CN202789558U Two-stage high-pressure vortex blower |
| 03/13/2013 | CN202789557U Horizontal multistage centrifugal pump |
| 03/13/2013 | CN202789556U Axial-force self-balancing multi-stage centrifugal pump |
| 03/13/2013 | CN202789555U Sand removing and slurry leveling pump |
| 03/13/2013 | CN202789554U Vertical submerged centrifugal pump |
| 03/13/2013 | CN202789553U Centrifugal type atomizing pump |
| 03/13/2013 | CN102966553A Oil-seal acid-proof pump |
| 03/13/2013 | CN102966552A Improved double-suction pump |
| 03/13/2013 | CN102966551A Vortex pump |
| 03/07/2013 | WO2013031343A1 Multi-pressure centrifugal turbo machine |
| 03/07/2013 | WO2013011105A3 Multistage centrifugal turbomachine |
| 03/07/2013 | US20130058757 Priming valve system for pre-priming centrifugal pump intakes |
| 03/06/2013 | CN102954001A Improved centrifugal pump |
| 03/05/2013 | US8388302 Coupling turbochargers for passive pre-swirl counter-rotation |
| 02/28/2013 | DE102011081333A1 Schaufelrad für eine Fluidfördereinrichtung sowie Haushaltsgerät mit einem solchen Impeller for a fluid conveying device and home appliance with such a |
| 02/27/2013 | CN202756276U Horizontal type overlong multi-stage pump |
| 02/27/2013 | CN202756251U Electric auxiliary water-feeding pump of pressurized water reactor nuclear power station |
| 02/26/2013 | US8382423 Micro-scale and meso-scale hydraulically or pneumatically powered devices capable of rotational motion |
| 02/20/2013 | CN102937095A Four-suction pump |
| 02/16/2013 | CA2750139A1 Conversion kit for turning a centrifuge pump into a self-priming centripetal pump |
| 02/14/2013 | WO2013023050A1 Pump with double- suction impeller generating axial thrust |
| 02/14/2013 | WO2013023038A1 Pump shaft seal using sealing rings and a bellows for retention of bearing lubricant |
| 02/14/2013 | US20130039751 Centrifugal fan |
| 02/14/2013 | US20130039745 Centrifugal pump |
| 02/13/2013 | CN102927014A Self-cooling centrifugal pump |
| 02/13/2013 | CN102927013A Double-suction pump |
| 02/07/2013 | US20130034427 Adjustable mechanical coolant pump |
| 02/06/2013 | CN202718872U Horizontal barrel pump |
| 02/06/2013 | CN102913452A First-stage positive-symmetric double-suction segment type multi-stage centrifugal pump |
| 02/06/2013 | CN102032193B Stamped and welded semi-open impeller centrifugal pump |
| 01/31/2013 | US20130028719 Concrete volute pump |
| 01/31/2013 | US20130028706 Method and apparatus for adjusting impeller/ring clearance in a pump |
| 01/30/2013 | CN202707618U Improved multi-stage pump middle section structure |
| 01/30/2013 | CN202707594U Preheating water pump |
| 01/30/2013 | CN202707507U Solid-liquid two-phase flow helicon-centrifugal pump |
| 01/30/2013 | CN202707506U Water pump |
| 01/24/2013 | WO2013011105A2 Multistage centrifugal turbomachine |
| 01/24/2013 | DE102011079510A1 Pumpe Pump |
| 01/24/2013 | CA2842022A1 Multistage centrifugal turbomachine |
| 01/23/2013 | CN202690503U Horizontal multi-stage pump axial inlet device and connecting structure of horizontal multi-stage pump axial inlet device |
| 01/23/2013 | CN202690463U Upright double-cylinder multi-stage centrifugal pump |
| 01/23/2013 | CN202690461U Water suction pump |
| 01/23/2013 | CN202689933U Centrifugal underground pressurizer |
| 01/16/2013 | CN202673693U High-lift and interstage-leakage-free multistage submersible pump |
| 01/10/2013 | US20130011250 Mechanical coolant pump |
| 01/10/2013 | US20130011237 Energy saving pump with multiple impellers |
| 01/09/2013 | CN202659513U Variable split-case pipeline pump |
| 01/09/2013 | CN101377200B 泵装置和洗衣机 Pump unit and washing machine |
| 01/08/2013 | US8348605 Device for discharging a fluid through a rotary chamber with internal circulation and centrifugal delivery of fluidized solid particles, and processes using this device |
| 01/03/2013 | WO2013000033A1 A centrifugal pump and volute liner |
| 01/02/2013 | EP2539994A2 Cooling system for a multistage electric motor |
| 01/02/2013 | CN102852802A Horizontal barrel pump |
| 01/02/2013 | CN102852801A Sectional multi-stage pump |
| 01/02/2013 | CN102852800A Spiral casing type nuclear power charging pump for two-stage liquid storage pipe |
| 01/02/2013 | CN102062101B Drainage pump and heat exchange device same |
| 01/02/2013 | CN101925748B Fluid machine |
| 01/02/2013 | CN101918718B Fastening of the rotor of a centrifugal pump |
| 01/01/2013 | US8342795 Support member for optimizing dynamic load distribution and attenuating vibration |