| Patents for F04B 47 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps (5,485) |
|---|
| 03/04/1986 | CA1201327A1 Pump jack for slant wells |
| 02/26/1986 | EP0172795A2 A fluid pump |
| 02/25/1986 | US4572012 Portable walking beam pump jack |
| 02/25/1986 | US4571939 Hydraulic well pump |
| 02/19/1986 | CN85200206U Manual suction pump |
| 02/13/1986 | WO1986000962A1 Water pump |
| 01/21/1986 | US4565496 Oil well pump system and method |
| 01/21/1986 | US4565246 Reciprocating pump with partial flow reversal |
| 01/07/1986 | US4563391 Ribbon rod for use in oil well apparatus |
| 01/03/1986 | WO1986000116A1 A pump |
| 12/24/1985 | CA1198315A1 Hydraulic pump jack |
| 12/10/1985 | US4557668 Down hole pump having a gas release valve |
| 12/03/1985 | CA1197412A1 Sucker rods, pony rods and production thereof |
| 11/26/1985 | CA1197177A1 Oil well pumping unit |
| 11/19/1985 | US4553910 Pulse driven hydraulic pump |
| 11/19/1985 | US4553590 Apparatus for pumping subterranean fluids |
| 11/12/1985 | CA1196547A1 Hydraulic oil pump |
| 11/05/1985 | US4551730 Method and apparatus for entering control points relative to a dynagraph of a well pumping unit |
| 11/05/1985 | US4551075 Well pump |
| 11/05/1985 | US4550805 Hydrostatic lubrication system for a walking beam |
| 10/24/1985 | WO1985004691A1 Hydraulic piston pump for pumping liquids |
| 10/23/1985 | EP0158839A1 Fluid pump |
| 10/22/1985 | US4548552 Dual valve well pump installation |
| 10/22/1985 | CA1195605A1 Oilwell pump system and method |
| 10/15/1985 | US4546607 Pumping apparatus |
| 10/08/1985 | US4545737 Method for pumping a liquid from a well and apparatus for use therein |
| 10/01/1985 | US4544335 For producing fluid from a formation located in a borehole |
| 09/26/1985 | EP0119210A4 Downhole well pump. |
| 09/25/1985 | EP0155544A2 Apparatus for the transport of flowable materials |
| 09/24/1985 | CA1193911A1 Method for monitoring an oil well pumping unit |
| 09/17/1985 | US4541783 For downhole installation in a wellbore |
| 09/10/1985 | US4540348 Oilwell pump system and method |
| 09/10/1985 | CA1193345A1 Pump jack control apparatus |
| 09/03/1985 | US4538970 Downstroke lift pump for wells |
| 08/27/1985 | US4537564 Pumping system for oil production |
| 08/20/1985 | US4536137 Submergible pumping apparatus |
| 08/13/1985 | US4534716 Down hole pump |
| 08/13/1985 | US4534715 For connection in a sump housing |
| 08/13/1985 | US4534706 Self-compensating oscillatory pump control |
| 08/13/1985 | US4534168 Pump jack |
| 08/07/1985 | EP0151092A2 Submerged hydraulic piston pump with hydrodynamic transmission |
| 07/30/1985 | US4531896 Fluid pump |
| 07/30/1985 | US4531891 Fluid bypass control for producing well plunger assembly |
| 07/23/1985 | US4530646 Pump jack operated compressor |
| 07/23/1985 | US4530645 Oil well pumping apparatus |
| 07/16/1985 | US4529364 Casing gas pump |
| 07/02/1985 | US4526048 Method for pumping a liquid from a well and apparatus for use |
| 07/02/1985 | US4525914 Method and apparatus for replacing bearings |
| 06/25/1985 | CA1189387A1 Mud pump drive |
| 06/11/1985 | CA1188565A1 Counterbalanced pumps and method of using same |
| 06/05/1985 | EP0143236A2 Pump rods |
| 06/04/1985 | US4520683 Pump jack slant wells |
| 05/29/1985 | EP0142946A2 A fluid pump |
| 05/28/1985 | US4519293 Oil well jack |
| 05/28/1985 | US4519262 Positive engagement safety mechanism and lift belt construction for long stroke, well pumping unit |
| 05/21/1985 | CA1187331A2 Fluid-powered submersible sampling pump |
| 05/14/1985 | US4516917 Well pumping apparatus and method |
| 05/14/1985 | US4516911 Solid state control system for oil well bailer pump |
| 05/14/1985 | US4516473 Cylinder driving system |
| 05/14/1985 | CA1186948A1 Sucker rod |
| 05/07/1985 | US4515532 Single action pneumatic powered spring retractable pump |
| 04/30/1985 | US4513576 Gas pressure operated power source |
| 04/23/1985 | US4512149 Oil well pumping unit |
| 04/11/1985 | EP0118497A4 Hydraulically actuated bore and well pump. |
| 04/09/1985 | US4509365 Detecting and analyzing faults in downhole equipment |
| 04/09/1985 | CA1185119A1 Method and apparatus for raising well fluids |
| 04/02/1985 | US4508488 Well pump controller |
| 03/19/1985 | US4505162 Oil well pumping apparatus and method |
| 03/12/1985 | US4504199 Fluid pump |
| 03/05/1985 | US4502843 Valveless free plunger and system for well pumping |
| 03/05/1985 | US4502535 Jet engine pump and downhole heater |
| 03/05/1985 | US4502343 Pump jack |
| 02/26/1985 | US4501119 Pump jack |
| 02/19/1985 | US4500224 Coupling for sucker rod assembly |
| 02/12/1985 | US4498845 Pumper bumper |
| 02/05/1985 | US4497616 Hydraulically-operated pump jack with chain drive |
| 01/29/1985 | US4496285 Reciprocating drive and velocity control for long stroke well pumping unit |
| 01/15/1985 | US4493613 Oil well pump drive |
| 01/08/1985 | US4492537 Fluid-operated oil or water well pump |
| 01/08/1985 | US4492536 Hydraulic oil well pumping unit |
| 01/08/1985 | US4492523 Toroidal inductor for a pressure sensor in a submersible pump |
| 01/08/1985 | US4492126 Variable leverage oil field pump jack |
| 01/02/1985 | CA1180426A Control apparatus and method for an oil-well pump assembly |
| 12/27/1984 | EP0129018A2 Fluid pump |
| 12/27/1984 | CA1180083A Ultrasensitive apparatus and method for detecting change in fluid flow conditions in a flowline of a producing oil well, or the like |
| 12/25/1984 | US4490097 Hydraulic pump driving unit for oil wells |
| 12/25/1984 | US4490095 Oilwell pump system and method |
| 12/25/1984 | US4490094 Method for monitoring an oil well pumping unit |
| 12/18/1984 | US4488473 To impart reciprocal motion under a predetermined force |
| 12/11/1984 | CA1179196A2 Hydraulic pumping unit for wells |
| 12/11/1984 | CA1179195A1 Hydraulic pumping unit for wells |
| 11/27/1984 | US4484865 Fluid pump for use down a well |
| 11/27/1984 | US4484833 Sucker rod |
| 11/27/1984 | US4484484 Power transmitting device for an oil well pump |
| 11/21/1984 | EP0125304A1 Low profile pump jack |
| 11/20/1984 | US4483662 Method for pumping a liquid from a well and apparatus for use therein |
| 11/20/1984 | US4483208 Pumping unit |
| 11/06/1984 | US4480960 Ultrasensitive apparatus and method for detecting change in fluid flow conditions in a flowline of a producing oil well, or the like |
| 11/06/1984 | US4480685 Oil well pump driving unit |
| 10/23/1984 | US4478285 Method and apparatus for removal of downhole well debris |