| Patents for F04D 15 - Control, e.g. regulation, of pumps, pumping installations, or systems (4,967) |
|---|
| 02/12/1980 | US4188173 Vertical pump with free floating check valve |
| 12/25/1979 | US4180374 Well pump protection system |
| 12/11/1979 | US4178127 Variable pitch impeller |
| 12/04/1979 | US4177018 Apparatus for regulating the passage and flow-rate of a liquid |
| 11/27/1979 | US4175701 Aircraft spraying system and method |
| 11/13/1979 | US4173796 Total artificial hearts and cardiac assist devices powered and controlled by reversible electrohydraulic energy converters |
| 11/06/1979 | US4173255 Low well yield control system and method |
| 11/06/1979 | US4173124 Boiler feed water pump control systems |
| 10/30/1979 | US4172692 Pumping plant fly wheel hydraulic surge protector |
| 10/23/1979 | US4171932 Liquid level sensor, pump system means and circuit means |
| 10/16/1979 | US4171186 Submerged pump control |
| 08/21/1979 | US4165204 Sump pump |
| 08/14/1979 | CA1060265A1 Variable output centrifugal pump |
| 07/17/1979 | CA1058479A1 Automatically operative pumping equipment |
| 06/12/1979 | CA1056315A1 Dual lever pressure oil supply system |
| 04/17/1979 | US4149825 Power conserving inducer |
| 12/26/1978 | CA1044956A1 Protective control system for water-jet propulsion systems |
| 11/28/1978 | CA1043163A1 Propeller pump |
| 11/07/1978 | US4124332 Automatically operative pumping equipment |
| 10/17/1978 | US4120603 Jet flap controlled fuel pump |
| 10/10/1978 | CA1040057A1 Hydraulic turbine spiral case drain |
| 09/05/1978 | CA1037779A1 Method for adjusting the vanes of a hydraulic machine operable both as a pump and as a turbine |
| 08/22/1978 | US4108499 Method and control system for controlling a suspended implement |
| 07/18/1978 | US4100877 Protective control system for water-jet propulsion systems |
| 06/13/1978 | US4094613 Variable output centrifugal pump |
| 05/02/1978 | US4087204 Enclosed sump pump |
| 04/18/1978 | US4084924 Pump-motor assemblage for circulating a coolant |
| 04/04/1978 | US4082380 Axial thrust sliding bearing for centrifugal pumps and compressors |
| 02/21/1978 | US4074575 Temperature and failure indicating probe for a bearing |
| 02/14/1978 | US4073595 Method and means for abruptly terminating the flow of fluid in closed fluid circulating systems of nuclear reactor plants or the like |
| 02/14/1978 | US4073594 Pump starting method for hydraulic machinery |
| 01/24/1978 | US4070132 Variable performance pump |
| 01/17/1978 | US4069101 Self-compensating level control for sump suction pumps |
| 11/08/1977 | US4057365 Submersible thrust limit switch |
| 11/01/1977 | US4056330 Method for adjusting the output of a pump provided with an adjustable spray cone with movable blades |
| 10/11/1977 | US4053398 Method and apparatus for water removal from oil in submersible motor environment |
| 09/27/1977 | US4050396 Portable water bailing device for a boat |
| 07/19/1977 | US4036561 Primary coolant pump for nuclear reactors |
| 07/12/1977 | US4035108 Axial flow pump for a pivotal rotor |
| 06/14/1977 | US4029123 Pump tank divider plate for sump suction sodium pumps |
| 05/24/1977 | US4025228 Hydraulic plant |
| 05/03/1977 | US4021144 Submersible pump with float switch |
| 04/26/1977 | US4019680 Steam generating system including means for reinitiating the operation of a steam bound boiler feed pump |
| 04/19/1977 | US4018546 Pump device for flow rate control of liquid in a piping system |
| 03/29/1977 | US4014624 Method and device for starting pump |
| 01/11/1977 | US4002936 Electric submersible pump |
| 11/30/1976 | US3994628 Multiple recirculating toilet |
| 11/16/1976 | US3992130 Sump pump system and pressure responsive switch assembly therefor |
| 11/16/1976 | US3991701 Bearing wear detecting device for canned motor driven pumps |
| 11/16/1976 | US3991564 Dual pressure level oil supply system |
| 10/12/1976 | US3985094 Series waterjet propulsion pumps for marine vehicles |
| 09/21/1976 | US3981621 Bearing wear detection devices |
| 08/31/1976 | US3977808 Method and means for abruptly terminating the flow of fluid in closed circulating systems of nuclear reactor plants or the like |
| 08/24/1976 | US3976391 Rotodynamic fluid pumps |
| 08/10/1976 | US3973877 Automatic pumping device |
| 08/10/1976 | US3973868 Suction valve for submerged pumping system |
| 08/03/1976 | US3972647 Screen for intake of emergency sump pump |
| 08/03/1976 | US3972643 Rotary pump |
| 07/13/1976 | US3969040 Pump, especially circulating pump |
| 06/08/1976 | US3961859 Clutch connected multi-stage impeller pump |
| 06/01/1976 | US3960463 Method of starting operation for a pump or a pump turbine |
| 05/25/1976 | US3958723 Automatic volume control for centrifugal pumps |
| 03/09/1976 | US3942375 Method and means for testing hydraulic pump |
| 03/02/1976 | US3941507 Safety supervisor for sump pumps and other hazards |
| 03/02/1976 | US3941498 Variable geometry collector for centrifugal pump |
| 02/24/1976 | US3940058 Steam generating system including means for reinitiating the operation of a steam bound boiler feed pump |
| 02/10/1976 | US3937591 Controlling a sludge flow |