| Patents for F04B 47 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps (5,485) |
|---|
| 08/18/1987 | US4686862 Low profile pump jack |
| 08/04/1987 | US4684331 Vaned slinger for pumps |
| 08/04/1987 | US4683945 Above ground--below ground pump apparatus |
| 08/04/1987 | US4683764 Pump drive for deep well pumping installations |
| 07/30/1987 | WO1987004498A1 A pump arrangement, particularly for pumping water from deep wells |
| 07/21/1987 | US4681515 Walking beam pump having adjustable crank pin |
| 07/02/1987 | WO1987003935A1 Device for pumping fluid medium |
| 06/30/1987 | US4676311 Multiwell pumping device |
| 06/18/1987 | WO1987003649A1 Well pump |
| 06/17/1987 | CN86108335A 井泵 Well pump |
| 06/17/1987 | CN85201850U Bushless boronized barrel of oil-pump |
| 06/16/1987 | US4672845 Polish rod temperature sensing system and rod stroking control |
| 06/09/1987 | US4671126 Walking beam pumping unit |
| 06/02/1987 | US4669536 Groundwater monitoring system |
| 05/19/1987 | US4666375 Pumping system |
| 05/19/1987 | US4665761 Long stroke pumping unit |
| 05/19/1987 | CA1221874A1 Piston with composite retention valve |
| 05/12/1987 | US4664186 Downhold hydraulic actuated pump |
| 05/06/1987 | CN85204990U Single-pile multi-cylinder wind pump |
| 05/06/1987 | CN85107446A Long stroke oil pump |
| 05/05/1987 | US4662831 Apparatus for fracturing earth formations while pumping formation fluids |
| 05/05/1987 | US4662774 Parabolic end fitting |
| 04/28/1987 | US4661052 Reciprocating down-hole sand pump |
| 04/28/1987 | US4660426 Pumping unit for actuating a down hole pump with static and dynamic counterweights |
| 04/28/1987 | CA1220979A1 Pump jack |
| 04/21/1987 | CA1220669A2 Oil well pump |
| 04/15/1987 | EP0217796A1 A pump |
| 04/09/1987 | WO1987002100A1 Displacement pump |
| 04/07/1987 | US4655691 Temperature-difference-actuated pump employing nonelectrical valves |
| 03/31/1987 | US4653989 Oil well pumping mechanism |
| 03/31/1987 | US4653383 Oil well sub-surface pump stroke extender |
| 03/24/1987 | US4651582 Counterbalanced pumps |
| 03/24/1987 | US4651578 Well pumping unit |
| 03/03/1987 | US4646517 Hydraulic well pumping apparatus |
| 02/24/1987 | US4644785 Hinged strain cell mounting apparatus |
| 02/24/1987 | CA1218264A1 Oil well downhole pump |
| 02/17/1987 | US4643258 Pump apparatus |
| 02/10/1987 | CA1217838A Method and appartus for detecting well pump-off |
| 01/14/1987 | EP0208035A1 Submerged pumping system with multi-strand cable |
| 01/13/1987 | CA1216684A1 Control system for oil well bailer pump |
| 12/30/1986 | US4632647 Side entry down hole pump for oil wells |
| 12/30/1986 | US4631970 For use at a well |
| 12/30/1986 | US4631954 Apparatus for controlling a pumpjack prime mover |
| 12/30/1986 | US4631918 Oil-well pumping system or the like |
| 12/16/1986 | US4629004 Plunger lift for controlling oil and gas production |
| 12/16/1986 | US4628994 Oil wells |
| 12/10/1986 | CN85205083U Rod type great deep well pump with double valves |
| 12/03/1986 | CN85106951A Submerged pumping system with multi-strand cable |
| 11/26/1986 | EP0202221A1 Method and means to pump a well |
| 11/20/1986 | EP0201492A1 Hydraulically driven downhole pump |
| 11/20/1986 | EP0201490A1 Downhole well pump and method |
| 11/12/1986 | CN85205082U Soft sealed oil-well pump with double valves and without bush |
| 11/12/1986 | CN85204202U Beam-pumping unit with long stroke |
| 11/11/1986 | US4621987 Plunger apparatus |
| 10/29/1986 | CN85204127U No-bush soft piston long stroke deep well pump |
| 10/22/1986 | EP0198074A1 Pumping apparatus |
| 10/22/1986 | CN85103185A Long stroke pumping unit |
| 10/15/1986 | CN85202072U Centrifugal impeller and guide cover for immersible-oil pump |
| 10/14/1986 | US4616981 Pumping apparatus with a down-hale spring loaded piston actuated by fluid pressure |
| 10/08/1986 | CN85205304U Split nylon wax wiper |
| 10/07/1986 | CA1212313A1 Hydraulic well pump |
| 09/30/1986 | US4614232 Device for delivering flowable material |
| 09/17/1986 | EP0194267A1 Water pump |
| 09/16/1986 | US4611974 Hydraulically operated well pump system |
| 09/09/1986 | CA1210992A1 Off-vertical pumping unit |
| 09/03/1986 | EP0092560B1 Pulse driven hydraulic pump |
| 08/12/1986 | CA1209464A1 Well pumping apparatus and method |
| 08/05/1986 | US4603592 Off-vertical pumping unit |
| 08/05/1986 | CA1208978A1 Oil well pumping apparatus and method |
| 08/05/1986 | CA1208977A1 Oil well pump |
| 07/22/1986 | US4601640 Oil well pump |
| 07/16/1986 | CN85202559U Long stroke pumping unit with cable and pulley |
| 07/15/1986 | US4600368 Pressure actuated downhole pump |
| 07/15/1986 | CA1207593A1 Low profile pump jack |
| 07/08/1986 | CA1207449A1 Method and apparatus for entering control points relative to a dynagraph of a well pumping unit |
| 07/08/1986 | CA1207448A1 Method and apparatus for weighing a sucker-rod pumped well |
| 07/02/1986 | CA1206806A Liquid pump |
| 07/01/1986 | US4597722 Long-stroke downhole pump |
| 06/24/1986 | US4596515 Oil well pump |
| 06/05/1986 | WO1986003262A1 Hydraulically driven downhole pump |
| 06/05/1986 | WO1986003250A1 Method and means to pump a well |
| 06/04/1986 | CN85202850U Single acting hydraulic piston pump with a new-type balance structure |
| 06/04/1986 | CN85201352U Oil pumping set |
| 06/03/1986 | US4592421 Sucker rods |
| 06/03/1986 | CA1205327A1 Oil well pump drive |
| 05/28/1986 | CN85202656U Manual pump with a suction tube |
| 05/27/1986 | US4591320 Submersible pumping unit |
| 05/27/1986 | US4591315 Piston with composite retention valve |
| 05/22/1986 | WO1986002971A1 Downhole well pump and method |
| 05/21/1986 | CN85203828U Flexible well pump with long-axis |
| 05/07/1986 | EP0179793A1 Hydraulic piston pump for pumping liquids. |
| 05/06/1986 | US4586879 Well pumping unit |
| 04/29/1986 | CA1203712A1 Rod guide and tubing protector |
| 04/24/1986 | WO1986002412A1 Pumping apparatus |
| 04/22/1986 | US4583923 Bellows latching mechanism for a submersible pump |
| 04/22/1986 | US4583916 Electrical control system for oil well bailer pump |
| 04/22/1986 | US4583915 Pump-off controller |
| 04/08/1986 | US4580952 Apparatus for lifting liquids from subsurface reservoirs |
| 03/19/1986 | EP0174750A1 Pump |
| 03/19/1986 | CN85202069U Oil and gas seperating device of latent oil pump |