| Patents for F04F 1 - Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped (1,650) |
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| 01/08/2008 | US7316544 Automatic pneumatic pump |
| 01/08/2008 | CA2433952C Positive pressure liquid transfer and removal system configured for operation by a hand and by a foot |
| 01/02/2008 | EP1420868B1 Fluid injector with vent/proportioner ports |
| 12/27/2007 | WO2007117940A3 Gas lift chamber purge and vent valve and pump systems |
| 12/26/2007 | EP1869327A1 A method and a system for raising a liquid |
| 12/25/2007 | US7311152 Gas operated pump for hydrocarbon wells |
| 12/20/2007 | US20070292276 Membrane Pump with Bleed Valve |
| 12/18/2007 | CA2425604C Gas operated pump for use in a wellbore |
| 11/28/2007 | EP1858795A2 Control of fluid conditions in bulk fluid delivery systems |
| 11/21/2007 | CN200978841Y Pneumatic oil extraction device |
| 11/21/2007 | CN200978840Y Head difference pressure conversion water lifting device |
| 11/15/2007 | US20070264133 Thermal management system for turbofan engines |
| 11/14/2007 | CN101070861A Condensed-water automatic pump machine-core |
| 11/08/2007 | US20070258830 Pump |
| 11/06/2007 | CA2353064C Gas displaced chamber lift system |
| 10/31/2007 | CN101063459A Step overlapped combined accumulation energy type pumping device |
| 10/25/2007 | US20070248471 Cavitation chamber degassing system |
| 10/25/2007 | US20070248470 Method and apparatus for loading a source gas into a cavitation medium |
| 10/11/2007 | WO2007112819A1 Optimisation of dead space in pistonless compressors |
| 10/11/2007 | WO2007112818A1 Optimisation of dead space in pistonless compressors |
| 10/11/2007 | WO2007112817A1 Optimisation of dead space in pistonless compressors |
| 10/10/2007 | EP1841968A1 Method for taransportation of liquids by steam or compressed air and a device for realization of the method |
| 10/10/2007 | CN200958500Y Pneumatic liquid pump |
| 10/10/2007 | CN200958499Y Liquid extractor |
| 10/09/2007 | US7278438 Apparatus and process for refilling a bubbler |
| 10/04/2007 | US20070231158 Artificial lift with additional gas assist |
| 10/04/2007 | DE102006014316A1 Gaseous medium e.g. oxygen, compressing device, has cylinder with fluid line that supplies and discharges fluid, where cylinder is arranged such that longitudinal axis of cylinder is arranged and inclined against horizontal axis |
| 10/04/2007 | DE102006014315A1 Device for compressing gaseous medium, particularly hydrogen, oxygen, helium, nitrogen and argon, has medium for changing fluid quantity in cylinder, where cylinder head area is formed as inward tapering |
| 10/04/2007 | DE102006014314A1 Piston-less compressor operating method, involves moving fluid column up and down in cylinder of piston-less compressor, and allowing overcharging of portions of fluid e.g. expensive ionic fluid, in discharge pipe during compression cycle |
| 09/27/2007 | WO2007108711A1 Waste water pumping device |
| 09/20/2007 | WO2007104820A1 Pump for draining bores by means of alternating aspiration and expulsion cycles, based on the principle of pneumatic displacement |
| 09/20/2007 | CA2646897A1 A pump for dewatering boreholes by means of alternate cycles of vacuum and exhaust, based on the principle of pneumatic displacement |
| 09/12/2007 | CN200946602Y Pneumatic water lift |
| 08/30/2007 | DE202007006369U1 Hydrodynamische Solarpumpe Hydrodynamic solar pump |
| 08/29/2007 | CN200939267Y Munual operated air pump with plug |
| 08/23/2007 | US20070196215 Motor-compressor |
| 08/22/2007 | CN101023272A Method and device for compressing a gaseous medium |
| 08/22/2007 | CN101021221A Multifunction air-filling drainage implement producing method |
| 08/15/2007 | CN101016890A Hydraulic pressure vehicle mounted comprehensive energy recovering and utilization system |
| 08/09/2007 | WO2007088022A1 Device, and method for feeding substances |
| 08/08/2007 | CN101012642A Bank side seawater delivery equipment directly climbing roads steply by natural force |
| 08/02/2007 | DE102006050974A1 Lifting device for e.g. waste water pumping station, has inner pipe that is connected with outer pipe, and compressed-air outlet that is closed in intermediate space, where inner pipe consists of pressure resistant, air permeable material |
| 08/02/2007 | DE102006005672A1 Suction duct for liquids with an intermediate duct for introducing compressed air to the lifted liquid |
| 07/25/2007 | CN101004187A A water pump |
| 07/19/2007 | WO2007080199A1 Water-lifting pump |
| 07/19/2007 | US20070166171 Geyser pump |
| 07/18/2007 | CN101002014A Fluidic oscillator |
| 07/11/2007 | CN2921395Y Pneumatic water raiser |
| 07/10/2007 | US7241080 Pump for transferring particulate material |
| 07/05/2007 | WO2007073633A1 An improved jet well pump |
| 07/03/2007 | CA2467875C Method and apparatus using traction seal fluid displacement device for pumping wells |
| 06/28/2007 | US20070148008 Method of operating a high pressure cavitation chamber with dual internal reflectors |
| 06/07/2007 | US20070125426 Medical gas outlet with support bracket |
| 06/06/2007 | EP1792087A1 Method and device for compressing a gaseous medium |
| 06/06/2007 | DE202006015854U1 Hebeeinrichtung für Flüssigkeiten Lifting device for liquids |
| 05/31/2007 | US20070119502 Device for purging deposit from an engine |
| 05/24/2007 | US20070113893 Pressurizing liquid delivery device |
| 05/10/2007 | WO2007053104A1 Pressure-generating pipe device for a pressure vessel |
| 05/10/2007 | US20070102045 Portable chemical transfer/neutralizing containment system |
| 05/10/2007 | US20070102044 Disinfectant transfer system |
| 05/02/2007 | CN2895821Y Air-pressure water lifter |
| 05/02/2007 | CN2895820Y Wind-force air-pressure water-lifting device |
| 05/01/2007 | US7210532 Method and apparatus for lifting liquids from gas wells |
| 04/11/2007 | EP1420868A4 Fluid injector with vent/proportioner ports |
| 03/29/2007 | US20070071613 Phase Change on Demand Integrated Pressure Pump and Power Plant |
| 03/28/2007 | EP1767778A1 Liquid-piston engine and system for generating electric current |
| 02/22/2007 | WO2007019947A1 Non-positive compressor |
| 02/22/2007 | CA2618549A1 Non-positive compressor |
| 02/21/2007 | EP1753954A1 Fluidic oscillator |
| 02/15/2007 | WO2007018548A1 Pulsation causing valve for a plural piston pump |
| 02/15/2007 | DE102005038268A1 Kolbenloser Verdichter Clear piston compressor |
| 02/08/2007 | WO2007014676A1 Engine |
| 02/08/2007 | CA2617461A1 Engine |
| 01/23/2007 | US7165950 Two-stage pressure relief valve |
| 01/17/2007 | EP1267692B1 Liquid dispenser |
| 01/17/2007 | CN2859042Y Air pressure oil pumping and conveying unit |
| 12/26/2006 | US7152618 Vacuum station and the method for operating the same |
| 12/20/2006 | CN2849264Y Non electric power automatic water raiser mechanism |
| 12/19/2006 | US7150586 Wine must and pomace pump |
| 12/19/2006 | US7150444 Valve with an integral orifice |
| 11/16/2006 | WO2006120145A1 Liquid for compressing a gaseous medium and use of the same |
| 11/07/2006 | CA2301919C Use of static mixing elements in connection with flow of gas and liquids through a production tubing |
| 10/26/2006 | US20060239830 Cyclic condensate pump having a three-way valve |
| 10/19/2006 | US20060231139 Method and disposable device for sampling and distributing a liquid, for example, in sterile conditions |
| 10/11/2006 | EP1272412B1 Method for repeatedly conveying rinsing fluid |
| 10/11/2006 | CN1279305C Metering apparatus for liquid pump |
| 09/21/2006 | WO2006097519A1 A method and a system for raising a liquid |
| 09/21/2006 | US20060210404 Pivoting mechanism for use in a high temperature steam distribution system |
| 09/20/2006 | EP1703141A1 A method and a system for raising a liquid |
| 09/12/2006 | US7105040 Wine must and pomace pump |
| 09/07/2006 | US20060196674 Artificial lift with additional gas assist |
| 08/23/2006 | EP1692401A1 A pump |
| 08/23/2006 | EP1692400A2 Improved impeller and wear plate |
| 08/23/2006 | EP1325207B1 Gas operated pump for use in a wellbore |
| 08/17/2006 | WO2006084516A1 Device and method for transporting fluids by means of shock waves |
| 08/10/2006 | US20060174942 High purity chemical delivery system |
| 08/08/2006 | US7086417 Gas flow control device |
| 08/03/2006 | CA2535137A1 Apparatus for hydraulically energizing down hole mechanical systems |
| 08/02/2006 | EP1360418B1 Gas lift valve with central body ventury for controlling the flow of injection gas in oil wells producing by continuous gas lift |
| 08/02/2006 | EP1300619B1 Orifice-built-in valve |