| Patents for F04D 1 - Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (3,447) |
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| 07/12/2012 | US20120177476 Turbocharger operating system and method for an internal combustion engine |
| 07/11/2012 | EP2473740A1 Two-stage centrifugal pump |
| 07/11/2012 | CN202326272U 十级泵 Ten pumps |
| 07/11/2012 | CN202326271U 耐高压密封水平中开多级离心泵 High pressure seal horizontal split multistage centrifugal pump |
| 07/11/2012 | CN202326270U 大排量高压水平中开多级离心泵 Large displacement high pressure horizontal split multistage centrifugal pump |
| 07/11/2012 | CN202326269U 中开式多级泵 In the open multi-stage pump |
| 07/11/2012 | CN202326268U 一种不锈钢多级离心泵导流体 One kind of stainless steel multi-stage centrifugal diversion body |
| 07/11/2012 | CN202326267U 一种两级化工流程泵 A two-stage chemical process pump |
| 07/11/2012 | CN202326266U 双级双吸离心泵 Two-stage double-suction centrifugal |
| 07/11/2012 | CN202326265U 单级双吸中开离心泵 Single-stage double-suction centrifugal pump |
| 07/11/2012 | CN202326264U 一种带过滤粉碎装置的离心泵 A centrifugal filter device with a smash |
| 07/11/2012 | CN102562610A Novel amphibious mining centrifugal multistage pump |
| 07/05/2012 | US20120171026 Centrifugal fan, molding die, and fluid feeder |
| 07/04/2012 | EP2472124A2 Impeller lock assembly and method |
| 07/04/2012 | CN202301204U Centrifugal pump thermal insulation device and centrifugal pump with same |
| 07/04/2012 | CN202301192U 新型汽油机离心泵 The new gasoline engine centrifugal pumps |
| 07/04/2012 | CN202301055U 离心泵 Centrifugal |
| 07/04/2012 | CN202301054U 一种带液体涡轮流量计的离心泵 A centrifugal pump with liquid turbine flowmeter |
| 07/04/2012 | CN202301053U 水冷式低磨耗泵 Water-cooled low wear pump |
| 07/04/2012 | CN102536836A Gas-liquid sealed pump |
| 07/04/2012 | CN102536835A Helico-centrifugal pump for solid-liquid two-phase fluid |
| 07/04/2012 | CN102536834A Single-stage double-suction and double-outlet deep well pump |
| 07/04/2012 | CN102072161B Pipeline pump formed by stamping and welding |
| 07/04/2012 | CN101922452B Pitot-turbo booster pump |
| 07/04/2012 | CN101846081B Horizontal radial multi-stage centrifugal pump |
| 07/04/2012 | CN101421519B Multi-stage compression system and method of operating the same |
| 06/27/2012 | CN202284568U 一种保障多级泵转子动平衡精度的转子组件 A safeguard multistage pump rotor balancing precision rotor assembly |
| 06/27/2012 | CN202284549U 一种汽车发动机冷却水泵 An automobile engine cooling water pump |
| 06/21/2012 | WO2012081562A1 Multistage pump |
| 06/20/2012 | EP2466142A2 Concentric multi-stage centrifugal pump with start stage |
| 06/20/2012 | CN101749250B First-stage double-absorption section self-balanced multiple-stage centrifugal pump |
| 06/19/2012 | US8202356 Degassing centrifugal apparatus with sensor |
| 06/16/2012 | CA2762453A1 Concentric multi-stage centrifugal pump with start stage |
| 06/13/2012 | CN202273901U 筒式多级消防给水泵 Drum multistage fire feed pump |
| 06/13/2012 | CN202273892U 一种多级旋涡式气泵 A multi-stage vortex pump |
| 06/13/2012 | CN202273872U 上出口型筒式多级消防给水泵 The export-oriented drum feed pump multistage fire |
| 06/13/2012 | CN202273868U 高效高承压卧式多级离心泵 Efficient high pressure horizontal multistage centrifugal pump |
| 06/13/2012 | CN202273867U 多级部分流泵 Multistage partial flow pump |
| 06/07/2012 | WO2012072068A1 Coolant pump |
| 06/06/2012 | CN202266442U 一种适用于多种安装形式的多级泵结构 One for a variety of installation in the form of a multi-stage pump structure |
| 06/06/2012 | CN202266441U 转筒式涡旋泵、取泥沙装置、泥沙疏浚船 Tumble scroll pump, take sediment means sediment dredging boat |
| 06/06/2012 | CN202266440U 离心泵 Centrifugal |
| 06/06/2012 | CN202266439U 一种用于三乙胺树脂生产的回流增压泵 A method for producing the resin of triethylamine was refluxed for booster |
| 06/06/2012 | CN1576606B Vane and sewage treatment pump equipped with the same vane |
| 06/06/2012 | CN102486175A Multi-outlet liquid pump |
| 05/31/2012 | WO2012069703A1 Pump |
| 05/31/2012 | WO2012003386A3 Durable pumps for abrasives |
| 05/31/2012 | CA2815735A1 Pump |
| 05/30/2012 | CN202250887U Multi-level water-feeding pump |
| 05/30/2012 | CN202250886U Dual-drum self-balancing sectional type multi-stage pump |
| 05/30/2012 | CN202250885U Axial division horizontal multi-stage conveying main pump |
| 05/30/2012 | CN202250884U Vertical multilevel low-temperature liquid oxygen and liquid nitrogen pump |
| 05/30/2012 | CN202250883U Energy-saving vertical multi-sectional water pump |
| 05/30/2012 | CN202250882U Non-play amount energy-saving multi-sectional water pump |
| 05/30/2012 | CN202250881U Energy-saving multi-stage centrifugal pump with fixed balance disc gap |
| 05/30/2012 | CN202250880U Horizontal split-case double-volute multistage centrifugal pump |
| 05/30/2012 | CN202250879U Horizontal middle open type double-volute multistage centrifugal pump with external reflux depressurization |
| 05/30/2012 | CN102483067A 两级离心泵 Two centrifugal pumps |
| 05/30/2012 | CN102477992A 一种压水堆核电机组用余热排出泵 One kind of PWR nuclear power plant with a residual heat removal pump |
| 05/30/2012 | CN102477991A 一种离心泵 One kind of centrifugal pumps |
| 05/30/2012 | CN101657612B Pitot engine crankshaft oil pump |
| 05/30/2012 | CN101624989B Pump |
| 05/30/2012 | CN101558244B 液压泵 Hydraulic pump |
| 05/30/2012 | CN101324236B Pump apparatus, assembling method of the same and washer system for vehicle |
| 05/23/2012 | CN202228366U Through-way type single-stage centrifugal clean water pump |
| 05/23/2012 | CN102465882A 一种改进叶轮布置的多级离心泵 An improved multistage centrifugal pump impeller arrangement |
| 05/23/2012 | CN102465881A 一种新型自吸离心泵的结构 A new self-priming centrifugal pump structure |
| 05/23/2012 | CN101956710B Method for hydraulically optimizing centrifugal pump under working conditions based on loss |
| 05/22/2012 | CA2502838C Electrically driven pump for the maintenance of swimming pools |
| 05/16/2012 | CN202220735U Centrifugal pump with installation guiding and auxiliary fastening device |
| 05/16/2012 | CN102454615A Multi-stage centrifugal pump |
| 05/16/2012 | CN102454614A Fire-fighting water pump device |
| 05/10/2012 | US20120114512 Low-profile blowers and methods |
| 05/10/2012 | DE102011118071A1 Zentrifugalpumpe Centrifugal pump |
| 05/09/2012 | CN102444588A High pressure multi-stage centrifugal pump |
| 05/09/2012 | CN102444587A Centrifugal pump device |
| 05/09/2012 | CN101892989B High-pressure double suction pump |
| 05/08/2012 | US8172515 Turbo vacuum pump |
| 05/03/2012 | US20120107108 Radial gas expander |
| 05/03/2012 | US20120107099 Turbo blower and high speed rotating body used in same |
| 05/03/2012 | US20120107093 Pitot Tube Pump |
| 04/26/2012 | US20120100015 Multi-stage compressor |
| 04/25/2012 | CN202203119U 一种新型离心泵 A new centrifugal pump |
| 04/25/2012 | CN102428278A 皮托管泵 Pitot tube pump |
| 04/25/2012 | CN102425550A 可视内流场测试离心泵 Within the visual field test flow centrifugal pumps |
| 04/25/2012 | CN101865136B 一种用于离心泵的动力传递装置 A power transfer device for centrifugal pump |
| 04/19/2012 | US20120093643 Multistage turbocompressor |
| 04/18/2012 | CN101603540B 低温升节能全扬程潜水电泵 Low temperature rise of energy-saving Full Head Submersible Pump |
| 04/15/2012 | CA2753253A1 Inducer fan assembly for a furnace |
| 04/12/2012 | DE102010047734A1 Kraftstoffpumpe Fuel pump |
| 04/11/2012 | CN202187928U 用于石油化工的自平衡不泄露流程泵 Since the balance is not used in petrochemical process pump leak |
| 04/11/2012 | CN202187927U 新型发电厂汽轮机油系统的立式离心油泵 Vertical centrifugal pump new power plant turbine oil system |
| 04/10/2012 | US8152442 Centripetal pumping stage and vacuum pump incorporating such pumping stage |
| 04/04/2012 | CN202182035U 一种多级对称式离心泵 A multi-stage centrifugal pumps symmetry |
| 04/04/2012 | CN102400919A 一种固液两相流螺旋离心泵 One kind of solid-liquid two-phase flow screw centrifugal pump |
| 04/04/2012 | CN102400918A 一种带切割装置的离心泵 A centrifugal pump with cutting device |
| 03/28/2012 | EP2433008A1 Pitot tube pump |
| 03/21/2012 | CN202170871U 双吸全平衡多级泵 Fully balanced multi-stage double-suction pump |
| 03/21/2012 | CN1952404B Dischare pump |
| 03/21/2012 | CN101235823B Centrifugal pump blade wheel-free hollow screw axis |