| Patents for F04B 47 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps (5,485) |
|---|
| 02/12/1980 | US4187680 Oil well pump drive |
| 02/07/1980 | WO1980000173A1 Wind machine system for pushing and lifting loads and having improved counterbalancing |
| 01/29/1980 | US4185946 Resilient intake and exhaust valve |
| 01/22/1980 | CA1070216A1 Pump jack assembly for wells |
| 01/22/1980 | CA1070168A1 Apparatus for pumping fluid from a well |
| 01/01/1980 | CA1068983A Hydraulic pumping unit with a variable speed triplex pump |
| 12/25/1979 | US4179947 Counterbalanced pumping system |
| 12/25/1979 | CA1068551A Longstroke pumping apparatus for oil wells |
| 12/04/1979 | US4176520 Drive system for deep well pump |
| 11/20/1979 | US4174926 Windmill pump drive system |
| 11/13/1979 | CA1066132A1 Well head gas counter balanced and operated actuator for oil well pumps |
| 11/06/1979 | US4173451 Downhole pump |
| 10/16/1979 | US4171185 Sonic pump off detector |
| 09/11/1979 | US4167098 Horizontal pumping unit |
| 07/17/1979 | US4161137 Rocker wheel jack for an oil-well pump |
| 07/10/1979 | US4160623 Deep well pump |
| 07/10/1979 | US4160463 Flow line monitor pilot valve assembly |
| 06/26/1979 | CA1057121A1 Pump assembly |
| 04/10/1979 | CA1052459A1 Oil well pumpoff control system |
| 04/03/1979 | US4147477 Pumping apparatus particularly for oil wells |
| 03/27/1979 | CA1051267A1 Pump jack |
| 03/20/1979 | US4145166 Displacement pump |
| 01/30/1979 | US4137017 Submersible deep well pump |
| 01/30/1979 | CA1047310A1 Method and means for controlling long stroke pumping units |
| 11/14/1978 | CA1042268A1 Elastomeric tubular pump |
| 10/31/1978 | CA1041371A1 Sound wave surfaced operated single tube pump |
| 10/24/1978 | US4121471 Rotating horsehead for oilfield pumping unit |
| 10/17/1978 | US4120612 Automatic pump for deep wells |
| 10/03/1978 | US4118148 Downhole well pump control system |
| 10/03/1978 | CA1039831A1 Oil well pumpoff control system utilizing integration timer |
| 09/26/1978 | CA1039109A1 Well piston pump reciprocating by rod elongation |
| 09/19/1978 | US4114375 Pump jack device |
| 07/25/1978 | US4102394 Control unit for oil wells |
| 07/11/1978 | US4099447 Hydraulically operated oil well pump jack |
| 07/04/1978 | US4098340 Method of and apparatus for cleaning down well valves of well pumps in situ |
| 06/27/1978 | US4097201 Combined well pump housing and aeration means |
| 06/06/1978 | US4092872 Safety attachment for the horsehead of an oil well pumping unit |
| 04/25/1978 | US4086035 Bailer pumps for oil wells |
| 04/25/1978 | US4086030 Free fluid-operated well turbopump |
| 04/18/1978 | US4084923 Double-acting, downhole pump assembly |
| 03/21/1978 | US4080111 High volume, double acting downhole pump |
| 03/21/1978 | US4080106 Purged valve assembly and method of sealing |
| 02/28/1978 | US4076467 Specially reinforced flexible tube pumping chamber |
| 02/28/1978 | US4076458 Automatic pump speed controller |
| 02/28/1978 | US4076457 Downhole pump speed control |
| 02/28/1978 | US4076218 Longstroke pumping apparatus for oil wells |
| 01/24/1978 | US4070134 Gas powered swabbing device |
| 01/03/1978 | US4066123 Hydraulic pumping unit with a variable speed triplex pump |
| 12/20/1977 | US4063825 Pumping apparatus particularly for oil wells |
| 12/13/1977 | US4062640 Method and means for controlling long stroke pumping units |
| 11/01/1977 | US4056335 Subsurface pumping installation for handling viscous or sand-laden fluids |
| 10/11/1977 | US4052907 Pumping device for wells, such as oil wells |
| 10/04/1977 | US4051736 Pump jack |
| 09/27/1977 | US4050858 Well pumping apparatus |
| 09/20/1977 | US4049365 Oil well pump with plunger pull down and desanding assembly |
| 09/13/1977 | US4047384 Pump jack device |
| 08/30/1977 | US4044738 Pollution control arrangements for engines |
| 06/21/1977 | US4030858 Multi-stage rabbit |
| 06/07/1977 | US4028013 Pulse multiplier for surface operated single tube pump |
| 05/31/1977 | US4026661 Hydraulically operated sucker rod pumping system |
| 04/19/1977 | US4018547 Pumping by wire elongation |
| 04/12/1977 | US4017214 Packing gland leak retriever device |
| 03/22/1977 | US4013385 Deep well pump system |
| 02/15/1977 | US4008008 Pumps |
| 01/18/1977 | US4003678 Fluid operated well turbopump |
| 11/02/1976 | US3989993 Drive and control mechanism for electrically operated reciprocating apparatus |
| 10/19/1976 | US3986552 Pumping system for high viscosity oil |
| 10/19/1976 | US3986355 Well head gas counter balanced and operated actuator for oil well pumps |
| 09/21/1976 | US3981626 Down hole pump and method of deep well pumping |
| 08/31/1976 | US3977259 Pumping apparatus |
| 07/27/1976 | US3971213 Pneumatic beam pumping unit |
| 06/29/1976 | US3966360 Continuous-flow fluid pump |
| 06/15/1976 | US3963073 Purging apparatus |
| 06/08/1976 | US3961865 Conversion bracket for well pump |
| 06/01/1976 | US3959967 Reciprocating apparatus particularly for pump unit |
| 05/18/1976 | US3957400 Double-ended hydraulically actuated down-hole pump |
| 05/18/1976 | US3957397 Conversion of wind energy to mechanical energy |
| 02/24/1976 | US3939909 System of suppressing the discharge casing string in deep-well vertical pumps |
| 02/24/1976 | US3939656 Hydrostatic transmission pump |
| 02/17/1976 | US3938910 Oil well pumpoff control system |
| 02/10/1976 | US3937599 Pumping system using solar energy |
| 02/03/1976 | US3936231 Oil well pumpoff control system |
| 01/20/1976 | US3933175 Snifter valve useful in control means for a piston in a cylinder |
| 01/20/1976 | US3932990 Closed loop booster system pneumatic actuator for oil wells |
| 01/06/1976 | US3930752 Oil well pumpoff control system utilizing integration timer |