| Patents for F04D 1 - Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (3,447) |
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| 12/20/1984 | WO1984004945A1 Centrifugal pump |
| 11/06/1984 | CA1177326A1 Power steering pump |
| 10/30/1984 | US4479756 Multi-stage pump |
| 07/31/1984 | US4462751 Centrifugal pump improvement |
| 06/12/1984 | US4453886 Centrifugal venturi |
| 05/23/1984 | EP0108869A2 Submerged motor pump for transporting submarine minerals |
| 02/15/1984 | EP0100390A2 A method of driving the impeller of a liquid pump by means of a brushless A.C. motor, and a liquid pump for carrying out the method |
| 01/31/1984 | US4428264 Apparatus for forming an element-free gap in a continuous slide fastener chain |
| 12/27/1983 | US4422834 Power steering pump |
| 11/09/1983 | EP0093483A2 Centrifugal pump |
| 10/18/1983 | US4410187 Sealing device for rotary hydraulic fluid machine |
| 09/27/1983 | US4406594 Compressor oil pump |
| 08/30/1983 | CA1152810A1 Multi-stage pump |
| 08/23/1983 | US4400134 Collector apparatus |
| 08/02/1983 | CA1151007A1 Case construction for multi-stage pump |
| 07/12/1983 | US4392777 Pump or blower, in particular for heating and air-conditioning systems |
| 05/17/1983 | CA1146411A1 Multi-stage pumps |
| 03/30/1983 | EP0075100A1 Multistage centrifugal pump |
| 03/29/1983 | US4378196 High-pressure centrifugal blower |
| 12/28/1982 | US4365931 Fluid displacement device |
| 12/01/1982 | EP0065654A2 Pomp for supplying fluid to a system |
| 11/30/1982 | US4361414 Equipment for the delivery of slurries and for refinement during delivery |
| 10/26/1982 | US4355951 Full admission pitot pump |
| 10/20/1982 | EP0063062A1 Seal for a rotary engine with hydraulic fluid |
| 09/30/1982 | WO1982003176A1 Megnetically suspended and rotated impellor pump apparatus and method |
| 09/29/1982 | EP0061159A2 Reversible centrifugal pump with identical hydraulic performance either way |
| 09/22/1982 | EP0060569A1 Magnetically suspended and rotated impellor pump apparatus |
| 09/21/1982 | CA1131991A1 Axial or screw centrifugal impeller pump, with an additional suction axial impeller mounted on the drive shaft |
| 09/01/1982 | EP0058882A1 An apparatus for forming an element-free gap in a continuous slide fastener chain |
| 08/31/1982 | US4347035 Centrifugal pump with single blade impeller |
| 08/31/1982 | CA1130649A1 Centrifugal pump with single blade impeller |
| 07/07/1982 | EP0055426A1 Stage compartment structure for multistage pumps |
| 06/01/1982 | US4332521 High speed jet rotating casing apparatus |
| 04/01/1982 | WO1982001039A1 Underwater pump |
| 03/30/1982 | US4322199 High specific speed rotary chamber pump |
| 12/29/1981 | US4307995 Vaneless multistage pump |
| 12/08/1981 | US4304104 Pitot heat pump |
| 11/10/1981 | US4299536 Multi-stage pumps |
| 10/28/1981 | EP0038389A1 Pump for solids handling |
| 10/27/1981 | CA1111312A1 Turbine pump |
| 09/29/1981 | CA1109731A1 Pump drive assembly |
| 09/15/1981 | US4289610 Apparatus for pumping and conditioning drilling fluid |
| 08/11/1981 | US4283005 Pump and centrifugal separator apparatus |
| 08/11/1981 | CA1106577A1 Apparatus for mixing or separating two non miscible liquids, particularly for liquid-liquid extraction |
| 08/04/1981 | US4281962 High pressure centrifugal pump |
| 07/28/1981 | US4280790 Centrifugal pitot pump with means for improving net positive suction head |
| 07/21/1981 | US4279571 Pitot pump with fluid lubricated bearings |
| 07/14/1981 | US4278399 Pumping stage for multi-stage centrifugal pump |
| 07/07/1981 | US4277223 Case construction for multi-stage pump |
| 06/30/1981 | US4275988 Axial or worm-type centrifugal impeller pump |
| 06/23/1981 | US4274803 High-pressure centrifugal pump unit |
| 06/10/1981 | EP0029895A1 Improved case construction for multi-stage pump |
| 05/26/1981 | CA1101733A1 High pressure pump for fluid jet slitter |
| 05/19/1981 | US4267964 Centrifugal separator with rotating pick-up tube |
| 04/28/1981 | US4264269 Centrifugal pitot pump with improved pitot |
| 04/28/1981 | CA1099991A1 Centrifugal pump |
| 03/10/1981 | US4255170 Venting device for the housing of a rotary machine |
| 03/10/1981 | US4255095 Turbopump |
| 03/03/1981 | CA1096703A1 Sealing system for use in composite multi-stage pump |
| 02/24/1981 | US4252499 Centrifugal pump |
| 02/17/1981 | US4251186 Device to circulate a fluid in a hollow shaft |
| 02/17/1981 | US4251184 Centrifugal pump |
| 01/13/1981 | US4244675 Multi-stage barrel type centrifugal pump with resilient compensator means for maintaining the seals between interstage pumping assemblies |
| 12/16/1980 | US4239448 High pressure pump for fluid jet slitter |
| 11/25/1980 | US4235602 Installation for mixing and separating two non-miscible liquids, inter alia for liquid-liquid extraction |
| 11/18/1980 | US4234290 Turbine pump |
| 10/21/1980 | US4229142 One-piece pumping device with ambivalent operation |
| 09/02/1980 | US4219917 Pump modification for matching performance |
| 09/02/1980 | CA1084776A1 Flushing and cooling system for pumps |
| 08/05/1980 | CA1082986A1 Turbine pump |
| 07/09/1980 | EP0013038A1 A pump of the Pitot type |
| 07/08/1980 | CA1081044A1 Centrifugal slurry pump and method |
| 06/17/1980 | CA1079573A1 Sealing system for centrifugal pump |
| 04/08/1980 | CA1075169A1 Air separator method and apparatus |
| 04/02/1980 | EP0009449A1 Bearing for ambivalent centrifugal pump |
| 03/18/1980 | US4193737 Fish pump |
| 03/18/1980 | CA1073743A1 Clutch connected multi-stage impeller pump |
| 02/26/1980 | US4190395 Multiple stage pump |
| 02/20/1980 | EP0008260A1 Turbine-driven pump |
| 02/19/1980 | US4188786 Hydraulic machine |
| 01/15/1980 | US4183713 Pitot pump with jet pump operated thrust balance |
| 12/18/1979 | US4179239 Modular pump unit for multistage high pressure slurry pump |
| 11/27/1979 | CA1066951A1 Centrifugal pump |
| 10/30/1979 | US4172690 Arrangement for centering the impellers in a multi-stage centrifugal pump |
| 10/09/1979 | US4170457 Air separator method and apparatus |
| 10/09/1979 | CA1063873A1 Preassembled unit or cartridge for multi-stage barrel type centrifugal pump and supporting fixture for use therewith |
| 10/09/1979 | CA1063872A1 Multi-stage pump |
| 09/18/1979 | CA1062545A1 Self-priming centrifugal pump |
| 08/14/1979 | CA1060265A1 Variable output centrifugal pump |
| 07/17/1979 | US4161448 Combined separator and pump with dirty phase concentrator |
| 06/12/1979 | CA1056315A1 Dual lever pressure oil supply system |
| 04/24/1979 | CA1053079A1 Submersible motor pump |
| 03/27/1979 | US4146353 Pump impeller |
| 03/13/1979 | US4143999 Fluid machines |
| 02/13/1979 | CA1048345A1 Centrifugal two-stage pump |
| 01/23/1979 | US4135852 Centrifugal slurry pump and method |
| 12/26/1978 | US4131386 Sealing system for centrifugal pump |
| 12/05/1978 | US4128362 Flushing and cooling system for pumps |
| 10/24/1978 | US4121839 Sealing system for use in composite multi-stage pump |
| 10/17/1978 | US4120618 Permanent magnetic centrifugal pump |