| Patents for F04B 11 - Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation (1,551) |
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| 01/19/2005 | EP1027538B1 Piston pump |
| 01/12/2005 | EP1495231A1 Hydro damper |
| 01/05/2005 | EP0582625B2 Process and device for the controlled metering of at least one pourable component |
| 01/05/2005 | DE19738524C5 Kolbenpumpe zum Erzeugen eines Fluiddrucks Piston pump for generating a fluid pressure |
| 01/04/2005 | US6837694 Hydraulic pump unit with orifice plate for vehicle brake control system |
| 01/04/2005 | US6837693 Fluid-pumping system employing piston-driven pump and employing at least one pulsation dampener |
| 12/22/2004 | CN1181261C Pump |
| 12/07/2004 | US6827479 Uniform small particle homogenizer and homogenizing process |
| 12/02/2004 | DE10314979B3 Kolbenpumpe Piston pump |
| 11/30/2004 | US6824365 Discharge apparatus for reciprocating compressor |
| 11/25/2004 | US20040234400 Piston pump |
| 11/24/2004 | EP0781379B1 Engineered pumping segment |
| 11/16/2004 | US6817409 Double-acting reciprocating downhole pump |
| 11/09/2004 | US6814548 Multiple piston engine with vibration reducing properties |
| 11/04/2004 | US20040219044 Reciprocating pump |
| 11/04/2004 | DE10317910A1 Pump system for use in high pressure applications, has auxiliary pump, powered by linear motor, connected to and in direct fluid contact with working area of main pump |
| 11/03/2004 | EP1473461A2 Reciprocating pump |
| 11/03/2004 | CN1542278A 往复泵 Reciprocating pump |
| 11/02/2004 | CA2316639C Surge suppression apparatus |
| 11/02/2004 | CA2316608C Surge suppression apparatus incorporating a pressure regulation assembly |
| 10/21/2004 | US20040208765 Damper device for a piston pump |
| 10/19/2004 | US6805841 Liquid pumping system |
| 10/14/2004 | WO2004088137A1 Reciprocating pump |
| 09/30/2004 | US20040187562 Method and system for the controlled application of fluid pressure to a load, especially for pressure testing pipe |
| 09/15/2004 | EP1455567A1 Electronic proportioner using continuous metering and correction |
| 09/08/2004 | CN1526951A 压缩机 Compressor |
| 08/26/2004 | US20040166004 Piston pump |
| 08/26/2004 | US20040164013 Pump for liquid chromatograph |
| 08/26/2004 | DE10306146A1 Low-pressure reservoir for a high-pressure piston pump for pumping fuel into an internal combustion engine's combustion chambers has a liquid-proof flexible separating structure |
| 08/25/2004 | EP1450043A2 Compressor |
| 08/19/2004 | US20040161346 Compressor |
| 08/19/2004 | US20040160120 Hydraulic unit |
| 08/12/2004 | DE10302681B3 Hydraulikaggregat Hydraulic unit |
| 08/10/2004 | US6773240 Single piston dual chamber fuel pump |
| 08/05/2004 | US20040151594 High pressure reciprocating pump and control of the same |
| 07/27/2004 | US6767188 Constant output fluidic system |
| 07/20/2004 | US6764285 Hydraulic pump unit |
| 07/15/2004 | US20040136833 High pressure reciprocating pump and control of the same |
| 07/14/2004 | EP1437509A2 High pressure reciprocating pump and control of the same |
| 07/13/2004 | CA2213194C Multiple piston pump |
| 06/16/2004 | EP1427536A1 Device for conveying powder and method for operating the same |
| 06/03/2004 | US20040105764 Oscillating displacement pump |
| 06/01/2004 | US6742534 Method of damping surges in a liquid system |
| 05/26/2004 | EP1421278A1 Pumping arrangement |
| 05/21/2004 | WO2004041418A1 Method and device for desalinating water while overcoming decreases in pressure |
| 05/19/2004 | DE10251342A1 Reverse osmosis seawater desalination membrane module maintains a continuous flow of salt water over the membrane drawn from reservoir |
| 05/13/2004 | DE20220881U1 Vorrichtung zum Fördern von Pulvern Device for conveying powders |
| 05/13/2004 | DE10329314A1 Pump for introducing a liquid into a chromatograph comprises chambers, plungers forming a first and a second volume with the chambers, a liquid connecting channel, a liquid inlet channel, and a liquid outlet channel |
| 05/13/2004 | DE10007180B4 Hochdruck-Kraftstoffpumpe High-pressure fuel pump |
| 05/06/2004 | DE10249558A1 Radial piston pump has annular spring in form of polygon progression fitted between slide rings and with length of broken flank shorter than length of each unbroken flank |
| 05/05/2004 | CN1148513C Fuel supply system |
| 05/04/2004 | US6729307 Bypass/leakage cooling of electric pump |
| 04/21/2004 | CN1491319A Damper device for piston pump |
| 04/21/2004 | CN1490522A Pump for liquid chromatograph and running method thereof |
| 04/14/2004 | CN1489672A Method for reducing noise and cavitation in machines and pressure exchangers which pressurize or depressurize fluids by means of displacement principle |
| 04/07/2004 | EP1404970A1 Piston pump |
| 03/18/2004 | DE10242590A1 Vorrichtung zum Dämpfen von Druckpulsationen in einem Fluidsystem, insbesondere in einem Kraftstoffsystem einer Brennkraftmaschine Device for damping pressure pulses in a fluid system, particularly in a fuel system of an internal combustion engine |
| 03/18/2004 | DE10233358B3 Regelverfahren zum Druckaufbau mittels Druckübersetzern, insbesondere zum Prüfen der Druckfestigkeit von Rohren Control method for pressure build-up by means of pressure intensifiers, especially for testing the compressive strength of tubes |
| 03/17/2004 | EP1398501A2 Device for damping pressure pulsations in a fluid system, particularly in a fuel system of a combustion engine |
| 03/11/2004 | WO2004020171A1 Method and device for pouring plastic raw material liquid |
| 03/04/2004 | WO2004001228A3 High-pressure small volume pump |
| 03/03/2004 | EP1394414A2 Pump and motor assembly with constant pressure output |
| 02/29/2004 | CA2438642A1 Motor controller for a hydraulic pump with electrical regeneration |
| 02/25/2004 | EP1391611A2 Constant output fluidic system |
| 02/19/2004 | US20040031521 Constant output fluidic system |
| 02/19/2004 | DE20315224U1 Motor-Pumpen-Aggregat Motor-pump assembly |
| 02/18/2004 | EP1389278A1 Discharge apparatus for reciprocating compressor |
| 02/12/2004 | US20040028541 Fluid-pumping system employing piston-driven pump and employing at least one pulsation dampener |
| 02/05/2004 | DE10232983A1 Kolbenmaschine mit Pulsation Piston engine with pulsation |
| 02/04/2004 | EP1386079A2 A liquid pumping system |
| 02/03/2004 | US6685449 Fluid apparatus including gravity induced check valves and downwardly inclined lower lamella portion of a bellows |
| 02/03/2004 | US6684635 System and method for controlling motor torque |
| 01/29/2004 | WO2004009996A1 Piston engine comprising a pulsation-reducing device |
| 01/29/2004 | US20040016230 Noise attenuation in a hydraulic circuit |
| 01/29/2004 | DE19654098B4 Pulsationsdämpfer für Munddusche Pulsation damper for oral irrigator |
| 01/28/2004 | EP1384901A1 Control method for building up pressure by means of pressure intensifiers, especially for testing the compression strength of tubes |
| 01/22/2004 | US20040011193 Arrangement at a piston engine and method of controlling the pistons |
| 01/14/2004 | CN1134589C Pulsation reducing device |
| 01/08/2004 | WO2004003383A1 Hydraulic amplification device for a high-pressure pumping system |
| 01/02/2004 | EP1375921A1 High pressure low volume piston pump |
| 01/02/2004 | EP1373732A2 Electronic motor torque control for positive displacement pumps |
| 01/02/2004 | EP1373731A1 Oscillating displacement pump |
| 01/01/2004 | US20040001765 Pumping arrangement |
| 12/31/2003 | WO2004001228A2 High-pressure small volume pump |
| 12/31/2003 | CN1464944A Pumping arrangement |
| 12/30/2003 | US6669455 Fluid-pumping system employing air-driven pump and employing at least one pulsation dampener |
| 12/17/2003 | EP1370768A1 A damper device for a piston pump |
| 12/17/2003 | EP1370450A1 Piston pump |
| 12/04/2003 | US20030221722 Method of damping surges in a liquid system |
| 12/02/2003 | US6655927 Radial piston pump with piston arrangement for controlling inlet/exit flow |
| 11/27/2003 | US20030219343 Pump as a pressure source for supercritical fluid chromatography |
| 11/26/2003 | CN1459004A Arrangement at piston engine and method of controlling the pistons |
| 11/26/2003 | CN1128938C Hydraulic system and pump |
| 11/25/2003 | US6652239 Motor controller for a hydraulic pump with electrical regeneration |
| 11/18/2003 | US6648609 Pump as a pressure source for supercritical fluid chromatography involving pressure regulators and a precision orifice |
| 11/18/2003 | US6648608 High pressure fuel pump |
| 11/06/2003 | US20030205044 System and method for controlling motor torque |
| 11/05/2003 | EP1141611B1 System for conveying liquids without pulsing |
| 10/29/2003 | EP1183466B1 Improved high pressure pump |
| 10/23/2003 | WO2003087584A1 Hydro damper |