| Patents for F04B 3 - Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage (444) |
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| 03/21/2006 | US7013791 Axial piston machine with a swash plate |
| 03/21/2006 | US7013669 Arrangement for multi-stage heat pump assembly |
| 03/16/2006 | US20060056984 Cylinder apparatus |
| 03/16/2006 | US20060056983 Internal intermediate pressure multistage compression type rotary compressor, manufacturing method thereof and displacement ratio setting method |
| 03/16/2006 | US20060056982 Internal intermediate pressure multistage compression type rotary compressor, manufacturing method thereof and displacement ratio setting method |
| 03/16/2006 | US20060056981 Internal intermediate pressure multistage compression type rotary compressor, manufacturing method thereof and displacement ratio setting method |
| 03/09/2006 | US20060051216 High-efficiency, large angle, variable displacement hydraulic pump/motor |
| 03/02/2006 | US20060045759 Combination loading and vacuum hopper for piston pump |
| 02/16/2006 | US20060034702 Leak detector comprising an inlet |
| 02/01/2006 | CN1239825C Combination oil-well pump |
| 01/25/2006 | EP1618309A2 Dynamic system for refrigeration equipment |
| 12/08/2005 | WO2005089091A8 Two-stage pressure relief valve |
| 10/27/2005 | US20050238519 Transducer or motor with fluidic near constant volume linkage |
| 10/20/2005 | US20050232786 Pump |
| 09/29/2005 | WO2005089091A2 Two-stage pressure relief valve |
| 09/21/2005 | EP1577559A1 Vacuum pumping system |
| 09/15/2005 | US20050201882 Vacuum pumping system |
| 08/25/2005 | WO2005078238A1 Axial piston machine with a swash plate |
| 08/25/2005 | US20050186085 Axial piston machine with a swash plate |
| 08/17/2005 | EP1564370A1 Axial piston machine with a swash plate |
| 07/28/2005 | US20050163627 Automotive fuel pump improvement |
| 06/16/2005 | US20050129531 Two-stage pressure relief valve |
| 06/09/2005 | US20050123426 Multi-directional pump |
| 06/08/2005 | EP1538052A2 Compressor |
| 06/08/2005 | CN1624325A Multi-directional pump |
| 05/18/2005 | CN1617750A Rotating compressor |
| 04/13/2005 | CN1196860C Ignition control device and method for IC engineer Ignition coil device |
| 03/30/2005 | EP1461096A4 Rotating compressor |
| 03/15/2005 | CA2123161C Double-piston pump for administering medication |
| 03/03/2005 | DE102004036555A1 Pump system for chain saw, has adjustable oil pump regulated by a chain saw operator to adjust the quantity of oil being conveyed, while a basic oil pump is connected in parallel to the adjustable oil pump |
| 02/16/2005 | CN1580552A Pump system for conveying lubricating oil |
| 02/03/2005 | US20050025636 Pump system for conveying lubricating oil |
| 11/03/2004 | EP0897473B1 Disposable ambulatory microprocessor controlled volumetric pump |
| 10/21/2004 | WO2004090338A2 Dynamic system for refrigeration equipment |
| 09/29/2004 | EP1461096A1 Rotating compressor |
| 09/02/2004 | US20040170772 Pump with pressure vessel with partitions for separation and discharging a solution |
| 08/18/2004 | EP1447569A1 Device for pressure generation |
| 08/12/2004 | DE10302690A1 Gas compression device has valve block arranged between two compression phases which are coupled such that longitudinal axes of flasks in compression phases run on common straight line |
| 06/16/2004 | CN1153906C Turbo-compressor device |
| 05/06/2004 | EP1415091A1 Method for harnessing a mechanical lift in resistance reduction cylinders and devices for power increasing application of said lift in performing work with machines and for increasing operating power for all means of transport |
| 04/08/2004 | WO2003047658B1 Rotating compressor |
| 03/24/2004 | EP1071880B1 Ignition control device and method |
| 12/31/2003 | CN1464195A Combination oil-well pump |
| 11/26/2003 | CN1128684C Suction pump |
| 10/28/2003 | US6637231 Field replaceable packaged refrigeration heat sink module for cooling electronic components |
| 10/21/2003 | US6634872 Suction pump |
| 10/21/2003 | CA2312085C Cooling means for the motor of a turbocompressor |
| 09/04/2003 | DE20308701U1 Single-cylinder radial pump has drive shaft which is simultaneously cylinder block and control slide, with one housing connected to further housing in which are located inlets and outlets at angle of 90 degrees to one another |
| 08/05/2003 | US6602060 Compressor employing piston-ring check valves |
| 07/15/2003 | US6592338 Vapor-compression distiller includes a rotary heat exchanger |
| 06/12/2003 | WO2003047658A1 Rotating compressor |
| 05/28/2003 | EP1165247B1 Suction pump |
| 05/07/2003 | CN1107804C Volumetric pump with sterility seal |
| 02/18/2003 | CA2270782C Cascaded progressing cavity pump system |
| 01/23/2003 | WO2002046609A9 Method for harnessing a mechanical lift in resistance reduction cylinders and devices for power increasing application of said lift in performing work with machines and for increasing operating power for all means of transport |
| 01/15/2003 | EP0927305B1 Piston pump |
| 11/07/2002 | DE10054967A1 Verfahren zur Betreibung maschineller Systeme und Anlagen, wirkend zwischen Kraft- und Arbeitsmaschine, sowie Vorrichtung zur Durchführung des Verfahrens Method for operating mechanical systems and equipment, acting between driving and driven machine and apparatus for performing the method |
| 10/31/2002 | US20020159901 Pump operating on rotational inertial forces with proportional delivery and head inversely proportional to the number of active circuits and balancing of the moments of the inertial forces transmitted to the pump supporting frame and generation of rotor oscillatory motion |
| 08/28/2002 | CN2507988Y Borehole booster for petroleum drilling |
| 08/13/2002 | US6431145 Ignition control device and method |
| 06/13/2002 | WO2002046609A1 Method for harnessing a mechanical lift in resistance reduction cylinders and devices for power increasing application of said lift in performing work with machines and for increasing operating power for all means of transport |
| 05/21/2002 | US6390789 Cooling means for the motor of a turbocompressor |
| 05/08/2002 | DE10053039A1 Opposed piston pump has two pistons in cylinder working in opposite directions, with power transmission to pistons effected by two crankshafts with connecting rods |
| 04/10/2002 | CN1344183A 回吸泵 Suction pump |
| 04/04/2002 | US20020038555 Rotating compressor |
| 03/28/2002 | US20020037224 Compressor employing piston-ring check valves |
| 02/06/2002 | CN1334903A Low pressure ratio piston compressor |
| 01/02/2002 | EP1165247A1 Suction pump |
| 12/11/2001 | US6328536 Reciprocating low pressure ratio compressor |
| 10/04/2001 | EP1138943A2 Circular cylinder pump with oscillating pistons |
| 10/04/2001 | EP1137882A1 Low pressure ratio piston compressor |
| 05/30/2001 | CN1297514A ignition control device and method |
| 03/27/2001 | US6206663 Piston pump |
| 01/31/2001 | EP1071880A1 Ignition control device and method |
| 01/24/2001 | CN1281100A Turbo-compressor device |
| 01/17/2001 | EP1069313A2 Turbo compressor |
| 12/12/2000 | US6158973 Multi-stage manual hydraulic pump |
| 12/12/2000 | CA2201987C A device with coaxial, opposite, modular pistons with double eccentric cams or similar, for floated pumps |
| 10/24/2000 | CA2181850C Cylinder assembly for a reciprocating compressor |
| 09/28/2000 | WO2000056465A1 Suction pump |
| 09/28/2000 | CA2368572A1 Suction pump |
| 09/20/2000 | CN1267361A Volumetric pump with sterility seal |
| 08/24/2000 | WO2000049290A1 Ignition control device and method |
| 08/17/2000 | DE19906390A1 Method and device for controlling an ignition coil in an internal combustion engine incorporates an RPM-detector to record an IC engine RPM at a recording time point within a cylinder's ignition cycle |
| 07/12/2000 | EP0897473A4 Disposable ambulatory microprocessor controlled volumetric pump |
| 06/27/2000 | US6079956 Multi-stage hydraulic pump |
| 06/15/2000 | WO2000034656A1 Low pressure ratio piston compressor |
| 05/31/2000 | EP1003974A4 Cascaded progressing cavity pump system |
| 05/31/2000 | EP1003974A2 Cascaded progressing cavity pump system |
| 05/30/2000 | US6068448 Pressure hydraulic pump having first and second synchronously driven reciprocating pistons with a pressure control structure |
| 04/13/2000 | DE19846711A1 High pressure pump has solenoid linear motor with coil body seated on high pressure sleeve enclosing inner chamber in sealed manner, clamped between two flanges |
| 04/12/2000 | CN2373595Y 自动加压油泵 Automatic pressure pump |
| 03/15/2000 | EP0984803A2 Volumetric pump with sterility seal |
| 01/18/2000 | US6015270 Linear compressor or pump with integral motor |
| 12/28/1999 | US6007310 Volumetric pump with sterility seal |
| 12/28/1999 | US6006525 Very low NPSH cryogenic pump and mobile LNG station |
| 12/21/1999 | US6004117 Displacement pump |
| 11/10/1999 | CN2348132Y Safety inflater |
| 08/31/1999 | US5944495 For pumping fluids from a fluid source to a fluid sink |
| 08/24/1999 | US5941533 Volumetric pump/valve sphincter seal |