| Patents for F04D 13 - Pumping installations or systems (12,375) |
|---|
| 11/08/1977 | US4057365 Submersible thrust limit switch |
| 09/27/1977 | US4050517 Geothermal energy well casing seal and method of installation |
| 09/27/1977 | US4050396 Portable water bailing device for a boat |
| 09/13/1977 | US4047847 Magnetically driven centrifugal pump |
| 08/30/1977 | US4044465 Cutting apparatus for a rusty nut |
| 08/09/1977 | US4040773 Oil-water interface control for submersible electric motor |
| 07/26/1977 | US4037984 Pumping apparatus and process characterized by gentle operation |
| 07/12/1977 | US4035108 Axial flow pump for a pivotal rotor |
| 07/05/1977 | US4033704 Destratification device |
| 06/21/1977 | US4030859 Floating aerator having means to vary the length of the draft pipe |
| 06/21/1977 | US4030301 Pump starting system for sea thermal power plant |
| 05/24/1977 | US4025240 Geothermal energy control system and method |
| 05/24/1977 | US4025228 Hydraulic plant |
| 05/10/1977 | US4023136 Borehole telemetry system |
| 05/03/1977 | US4021150 Battery powered pump |
| 05/03/1977 | US4021137 Storm choke apparatus for submergible pumps |
| 04/26/1977 | US4019836 Plastic motor-pump base for a submersible pump unit |
| 04/19/1977 | US4018546 Pump device for flow rate control of liquid in a piping system |
| 04/19/1977 | US4018544 Centrifugal pump |
| 04/12/1977 | US4016893 Solvent pumping system |
| 03/22/1977 | US4013384 Magnetically driven centrifugal pump and means providing cooling fluid flow |
| 03/22/1977 | US4013383 Vertical shaft impeller pump apparatus |
| 03/22/1977 | US4013053 Fuel pump |
| 02/22/1977 | US4008985 Pumping device for fluids |
| 02/15/1977 | US4008010 Hydraulic machine |
| 01/18/1977 | US4003678 Fluid operated well turbopump |
| 01/11/1977 | US4002936 Electric submersible pump |
| 12/28/1976 | US3999890 Enclosed sump pump |
| 11/30/1976 | US3994624 Water envelope pump and tank system |
| 11/23/1976 | US3993416 Fuel tank assembly and a method of constructing same |
| 11/16/1976 | US3992130 Sump pump system and pressure responsive switch assembly therefor |
| 11/02/1976 | US3989966 Apparatus for circulating cooling and lubricating liquids and the like particularly after shutdown of the apparatus |
| 11/02/1976 | US3989070 System for and method of carrying out wash-draining, after-draining and the like |
| 09/21/1976 | US3981628 Pump |
| 09/21/1976 | US3981626 Down hole pump and method of deep well pumping |
| 09/21/1976 | US3981610 Water pump |
| 09/21/1976 | US3981319 Cycling air volume control |
| 08/31/1976 | US3977213 Explosively actuated overspeed decoupler |
| 08/10/1976 | US3973877 Automatic pumping device |
| 08/10/1976 | US3973871 Sump pump |
| 08/10/1976 | US3973867 Radial flow type pump |
| 08/03/1976 | US3972653 In-line pump device |
| 07/20/1976 | US3970408 Apparatus for use with delicate fluids |
| 07/13/1976 | US3969043 Process cooled submersible pump and motor assembly |
| 07/13/1976 | US3969040 Pump, especially circulating pump |
| 07/06/1976 | US3967915 Centrifugal pump |
| 06/29/1976 | US3966363 Pumping assembly |
| 06/29/1976 | US3966262 Sump and pump construction for conveying solids in the form of a slurry |
| 06/22/1976 | US3964885 Centrifugal pumps |
| 06/15/1976 | US3963381 Double foot valve for cryogenic fluid containing tanks |
| 06/08/1976 | US3961866 Geothermal energy system heat exchanger and control apparatus |
| 06/08/1976 | US3961859 Clutch connected multi-stage impeller pump |
| 06/01/1976 | US3960468 Fluid lubricated bearing assembly |
| 06/01/1976 | US3960467 Cooling device for a pump motor |
| 05/18/1976 | US3957403 Dewatering pump assembly |
| 05/18/1976 | US3957402 Dewatering pump assembly having a heat exchanger |
| 05/18/1976 | US3957389 Pumping apparatus and process characterized by gentle operation |
| 04/27/1976 | US3953150 Impeller apparatus |
| 04/27/1976 | US3953004 Apparatus for the simultaneous pumping-mixing of several non miscible liquids |
| 04/13/1976 | US3950220 Nuclear reactors |
| 04/13/1976 | US3949567 Centrifugal pump assembly |
| 03/23/1976 | US3945771 Submerged pump |
| 03/23/1976 | US3945756 Centrifugal pumping system |
| 03/09/1976 | US3942961 Pumps |
| 03/02/1976 | US3941517 Magnetic hydraulic pump |
| 03/02/1976 | US3941507 Safety supervisor for sump pumps and other hazards |
| 03/02/1976 | US3941073 Portable water bailing device for a boat |
| 02/17/1976 | US3938914 Pump impeller and coupling magnet structures |
| 02/17/1976 | US3938913 Flow machine for an aggressive, radioactive or special-purity flow medium |
| 02/17/1976 | US3938334 Geothermal energy control system and method |
| 02/03/1976 | US3936243 Fuel pump |
| 02/03/1976 | US3936240 Centrifugal-vortex pump |
| 01/13/1976 | US3932069 Variable reluctance motor pump |
| 01/13/1976 | US3932068 Magnetically-coupled pump |
| 01/06/1976 | US3930757 Pressure equalizing pump |