| Patents for F04B 47 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps (5,485) |
|---|
| 10/16/1984 | US4477234 Double acting engine and pump |
| 10/16/1984 | US4476925 Sand shield for bottom hole pumps |
| 10/09/1984 | US4475872 Water pump and gear box therefor |
| 10/02/1984 | US4474002 Hydraulic drive pump apparatus |
| 10/02/1984 | CA1175345A1 Method and apparatus for pumping subterranean fluids |
| 09/26/1984 | EP0119210A1 Downhole well pump |
| 09/19/1984 | EP0118497A1 Hydraulically actuated bore and well pump. |
| 09/18/1984 | US4472113 Pumping by martensitic transformation utilization |
| 09/11/1984 | US4470775 Submersible deep well pump |
| 08/28/1984 | US4468175 For use in a well |
| 08/21/1984 | US4466301 Low profile pumpjack unit |
| 08/21/1984 | CA1172908A1 Oil well pump driving unit |
| 08/14/1984 | US4465435 Apparatus for using natural gas pressure for pumping a well |
| 07/31/1984 | US4462765 Liquid-proofing system for an electric motor of a deep-well pumping unit |
| 07/31/1984 | US4462763 Hydraulic pump jack |
| 07/31/1984 | US4462759 Oil well pump shutdown system |
| 07/31/1984 | US4462464 Wellhead with hydraulic pump actuator |
| 07/24/1984 | US4461187 Pump jack |
| 07/17/1984 | US4460320 Sonic pressure wave surface operated pump with extensible pumping assembly |
| 07/17/1984 | US4460038 Installation for testing a well and a process for use thereof |
| 07/17/1984 | CA1170905A1 Well pump |
| 07/10/1984 | CA1170500A1 Petroleum pumping unit |
| 07/06/1984 | EP0083366A4 Moving mass pump jack and method of operation. |
| 06/26/1984 | US4456060 Method for pumping a liquid from a well and apparatus for use therein |
| 06/19/1984 | US4454778 Pump jack system for oil well |
| 06/19/1984 | CA1169333A1 Oil well pump drives and servo control mechanisms therefor |
| 06/12/1984 | US4453892 Submergible pump installations |
| 05/29/1984 | US4451212 Pumping system for oil production |
| 05/29/1984 | US4451209 Method of extracting fluid from the earth |
| 05/24/1984 | WO1984001987A1 Low profile pump jack |
| 05/22/1984 | US4449896 Hydraulic operated surface pumping unit |
| 05/22/1984 | US4449892 Pump with rotary sonic pressure wave generator |
| 05/22/1984 | CA1167696A1 Oil well pump driving unit |
| 05/01/1984 | US4445819 Single action pneumatic powered spring retractable pump |
| 04/25/1984 | EP0105877A1 Pump for liquids and gases. |
| 04/24/1984 | CA1166075A1 Fluid-powered submersible sampling pump |
| 04/17/1984 | US4443161 Balanced dual chamber oil pump |
| 04/06/1984 | EP0092560A4 Pulse driven hydraulic pump. |
| 04/03/1984 | US4440231 Downhole pump with safety valve |
| 04/03/1984 | CA1164726A1 Liquid pump |
| 03/29/1984 | WO1984001191A1 Downhole well pump |
| 03/27/1984 | US4438628 Pump jack drive apparatus |
| 03/27/1984 | CA1164271A1 Pump jack |
| 03/27/1984 | CA1164270A1 Pump jack drive apparatus |
| 03/15/1984 | WO1984001002A1 Hydraulically actuated bore and well pump |
| 03/13/1984 | US4436492 Surface power unit for a downhole pump |
| 03/13/1984 | US4436488 Below motor pressure compensation system for submersible pump |
| 03/13/1984 | CA1163501A1 Pumping apparatus |
| 03/06/1984 | US4434705 Introduced in the hydraulic actuation for the alternative movements of the swinging arms of petroleum extractor machines |
| 02/22/1984 | EP0101160A1 Reciprocating drive and reversing mechanism for long stroke, well pumping unit |
| 02/21/1984 | US4432706 Oil well pump driving unit |
| 02/14/1984 | US4431052 Downhole seal for low profile oil well pumping installations |
| 02/14/1984 | US4430924 Petroleum pumping unit |
| 01/24/1984 | US4427348 Duplex hydraulic and air oil well pump |
| 01/10/1984 | US4425086 Combined surface power unit and velocity actuated valve for a downhole pump |
| 01/10/1984 | US4425083 Velocity actuated valve for a downhole pump |
| 01/10/1984 | CA1160150A1 Below motor pressure compensation system for submersible pump |
| 12/27/1983 | US4422469 Submersible pump check valve |
| 12/20/1983 | US4421463 Downhole pump |
| 12/13/1983 | CA1158458A1 Variable drive for pump jack |
| 12/06/1983 | US4418609 Well pumping system |
| 11/30/1983 | EP0095288A1 Bore hole pump |
| 11/29/1983 | US4417860 Submersible well pump |
| 11/29/1983 | US4417858 Plunger lift control |
| 11/22/1983 | US4416593 Gas operated down hole pump |
| 11/22/1983 | US4416329 Oil well setup and pumping apparatus |
| 11/15/1983 | US4414808 Hydraulic actuator for well pumps |
| 11/08/1983 | US4413676 Oil well monitoring device |
| 11/02/1983 | EP0092560A1 Pulse driven hydraulic pump. |
| 10/25/1983 | US4411313 Pump |
| 10/18/1983 | US4410300 Oil well rabbit |
| 09/27/1983 | US4406598 Long stroke, double acting pump |
| 09/27/1983 | US4406597 Method for pumping a liquid from a well and apparatus for use therein |
| 09/27/1983 | US4406122 Hydraulic oil well pumping apparatus |
| 09/20/1983 | US4405291 Downhole double acting pump |
| 09/20/1983 | US4404863 Counterbalanced pumps and method of using same |
| 09/13/1983 | US4403919 Apparatus and method for pumping a liquid from a well |
| 08/30/1983 | US4401159 Jet engine pump and downhole heater |
| 08/23/1983 | US4400141 Hydraulic pump unit |
| 08/18/1983 | WO1983002805A1 Pump for liquids and gases |
| 08/16/1983 | US4398870 Variable volume sonic pressure wave surface operated pump |
| 08/16/1983 | CA1151998A1 Oil well pumping apparatus |
| 07/26/1983 | US4395204 Oil well pump |
| 07/13/1983 | EP0083366A1 Moving mass pump jack and method of operation |
| 07/12/1983 | US4392792 Lineal multi-cylinder hydraulic pumping unit for wells |
| 07/06/1983 | EP0082891A1 Pumping system |
| 07/05/1983 | US4391569 Positive displacement pump systems |
| 07/05/1983 | US4391155 Reciprocating drive and reversing mechanism for long stroke, well pumping unit |
| 06/28/1983 | US4390321 Control apparatus and method for an oil-well pump assembly |
| 06/21/1983 | US4388837 Positive engagement fail safe mechanism and lift belt construction for long stroke, well pumping unit |
| 06/21/1983 | US4388836 Pumping mechanism |
| 05/26/1983 | WO1983001817A1 Oilwell pump system and method |
| 05/17/1983 | US4383803 Lifting liquid from boreholes |
| 05/11/1983 | WO1983001658A1 Pulse driven hydraulic pump |
| 05/03/1983 | US4381695 Hydraulically operated pump jack with holding valves and control assembly |
| 04/26/1983 | US4381177 Sonic pressure wave surface operated pump |
| 04/19/1983 | US4380150 Pump jack assembly for wells |
| 03/22/1983 | US4377092 Well pump jack with controlled counterbalancing |
| 03/22/1983 | CA1143215A1 Reversing valve assembly for a fluid operated well pump |
| 03/08/1983 | US4375946 Well pump |