Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04F - Pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped; Siphons › F04F 1 - Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
Patents for F04F 1 - Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped (1,650)
08/1986
08/12/1986US4605356 Apparatus for continuously pressure-feeding slurry
06/1986
06/04/1986EP0183155A1 Automatic liquid-raising device
05/1986
05/27/1986US4590988 Method and apparatus for supplying molten metal in the manufacture of amorphous metal ribbons
05/13/1986CA1204382A1 Differential gas lift valve
04/1986
04/02/1986CN85202199U Oil shielding system of pump
12/1985
12/03/1985US4556368 Vapor pressure pump
11/1985
11/19/1985CA1196817A1 Pressure differential liquid transfer system
10/1985
10/08/1985US4545731 Method and apparatus for producing a well
09/1985
09/11/1985EP0154545A2 Liquid dispensing pump
07/1985
07/30/1985CA1191070A1 Pneumatic method and apparatus for circulating liquids
07/09/1985US4527956 Pipe for elevating liquid, and device provided therewith
06/1985
06/04/1985US4521162 Pumping system
05/1985
05/21/1985US4518036 Device for controlling a safety valve disposed below an activation pump in a hydrocarbon production well
04/1985
04/09/1985CA1185299A1 Pneumatic transfer system and a fluid flow control device therefor
04/02/1985US4508493 Self actuating diaphragm pump
03/1985
03/26/1985US4507056 Liquid circulation apparatus and method
01/1985
01/15/1985CA1180977A1 Pumping device
12/1984
12/05/1984EP0127406A2 An improved pumping system
10/1984
10/02/1984US4474234 Safety valve installed below an activation pump in a hydrocarbon production well
09/1984
09/18/1984US4471795 Contamination free method and apparatus for transfer of pressure energy between fluids
09/18/1984CA1174588A1 Artificial lifting device and method
08/1984
08/29/1984EP0116830A1 Pressure vessel as receiver of liquids to be conveyed
08/28/1984US4468220 Low flow constant rate pump
07/1984
07/17/1984US4460318 Apparatus and method for transferring slurries
07/11/1984EP0038857B1 Pumpless flow system for a corrosive liquid
06/1984
06/27/1984EP0111555A1 De-watering pump
05/1984
05/29/1984USRE31592 Method and apparatus for operating a water-jet pump
04/1984
04/24/1984US4444251 Combined installation comprising an activation pump and a safety valve disposed below this pump, in a hydrocarbon production well
03/1984
03/27/1984US4439110 Controlling and regulating device for pumps with constant volume
01/1984
01/24/1984US4427345 For flowing hydrocarbons from a well bore to the earth's surface
01/05/1984WO1984000054A1 De-watering pump
12/1983
12/27/1983US4422833 Pneumatic transfer system and a fluid flow control device therefor
11/1983
11/08/1983US4413952 Small temperature differential heat-powered compressor
10/1983
10/19/1983EP0091621A1 Low flow constant rate pump
10/11/1983US4408960 Pneumatic method and apparatus for circulating liquids
10/04/1983US4407636 Self-cleaning submersible pump
09/1983
09/06/1983CA1153248A1 Pneumatic pressure/vacuum pump
08/1983
08/16/1983US4398362 Oceanic seaplow system
08/09/1983US4397612 Gas lift utilizing a liquefiable gas introduced into a well
07/1983
07/26/1983US4395200 Downhole oil well pump
06/1983
06/14/1983US4387595 Float of slurry pressure feeding system
05/1983
05/31/1983US4385871 Wind driven air pump
05/31/1983CA1147354A1 Pneumatic-hydraulic pump dredge
05/24/1983US4384704 Cargo valve
04/1983
04/06/1983EP0076083A2 Airlift pump and method of operation
03/1983
03/22/1983CA1143173A1 Float for a slurry pressure feeding system
03/17/1983WO1983000903A1 Pneumatic method and apparatus for circulating liquids
02/1983
02/08/1983US4372122 Propellant operator
02/01/1983US4370860 Method of and means for generating power from a hot brine source
12/1982
12/28/1982US4365728 Liquid discharge apparatus
10/1982
10/26/1982US4355789 Gas pump for stirring molten metal
10/12/1982US4353174 Electronic control system for pneumatic-hydraulic pump dredge
10/05/1982US4352639 Pneumatic pump
09/1982
09/21/1982CA1132029A1 Apparatus for continuous slurry displacement transfer
07/1982
07/27/1982US4341492 Method for pneumatically handling agglomerative materials
07/13/1982US4339232 Pressure differential liquid transfer system
06/1982
06/29/1982US4336763 Marine vessel transfer system
06/01/1982US4332530 Pressurized air pumping apparatus
05/1982
05/12/1982EP0051571A1 Emulsion siphon
05/11/1982US4328958 Apparatus for stirring molten metal in container
04/1982
04/06/1982US4323452 Using a gas under pressure
03/1982
03/23/1982US4321017 Pneumatic ejector control
03/23/1982US4321016 Apparatus for continuous slurry displacement transfer
02/1982
02/23/1982US4316680 Air-assisted hydraulic re-circulatory bouyancy pump
01/1982
01/05/1982US4309148 Pulsing steam solar water pump
12/1981
12/29/1981US4307525 Pneumatic-hydraulic pump dredge
12/15/1981US4305700 Air lift pump for wells, and means of controlling same by the fluid level in the well casing
12/08/1981US4304527 System for pumping an abrasive or corrosive fluid
09/1981
09/22/1981US4290446 Pump/exchanger device
09/16/1981EP0035664A1 Air pump associated with a tank and method of cooling the pump
09/08/1981US4287903 Method and apparatus for recovering products of low pumpability
08/1981
08/11/1981CA1106729A1 Apparatus for producing mechanical kinetic energy from falling water
06/1981
06/02/1981US4270521 Solar heating system
05/1981
05/14/1981WO1981001246A1 Pumpless flow system for a corrosive liquid
05/05/1981US4265599 Hydropneumatic energy system
03/1981
03/25/1981EP0025451A1 Process for transferring under high pressure liquid containing solid materials
03/24/1981US4257723 Device for sucking up solid materials or objects
02/1981
02/03/1981CA1094826A1 Method and apparatus for recuperating hard to pump materials
01/1981
01/27/1981US4246890 Passive solar heater fluid pump system
01/13/1981CA1093284A1 System for feeding solutions and suspensions
01/06/1981US4242988 Method and device for transferring condensates from a low pressure network into a high pressure network in a system of generation, distribution and utilization of condensable vapor
12/1980
12/10/1980EP0019683A2 Water removal device for slopingly inclined drill-holes
11/1980
11/27/1980WO1980002586A1 Pump for gasodynamic mixing of molten metal
11/04/1980US4231712 Sea water lifting device
11/04/1980CA1088823A1 Method and device for feeding a system of generation and distribution of vapour condensable into make-up liquid
09/1980
09/18/1980WO1980001937A1 Process for transferring under high pressure liquid containing solid materials
09/16/1980US4222440 Methods of small volume pumping especially suited for oil recovery from stripper wells
07/1980
07/15/1980US4212593 Heat-powered water pump
05/1980
05/28/1980EP0011339A2 Control device for displacement pumps
05/28/1980EP0011286A1 Method and device for operating a water jet pump
04/1980
04/29/1980US4200425 Gas-lift device
04/01/1980US4195653 Method and apparatus for recovering products of low pumpability
03/1980
03/11/1980CA1073416A1 Vacuum bottle with pump dispenser
03/06/1980WO1980000364A1 Device for gasodynamic mixing of molten metal
01/1980
01/01/1980US4181470 Gas-operated liquid pump
12/1979
12/11/1979US4177767 Method and device for feeding a system of generation and distribution of vapor condensable into make-up liquid
10/1979
10/02/1979CA1063481A1 Pneumatic sewage ejector
09/1979
09/18/1979CA1062546A1 Method for the non-mechanical conveying of a collected quantity of liquid and apparatus for the performance of the aforesaid method
07/1979
07/24/1979US4162037 Automatic sprayer
05/1979
05/22/1979US4155851 Vacuum drainage system
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