| Patents for F04B 45 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids (2,191) |
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| 08/04/2004 | CN2630520Y Membrane oil-free low-noise negative pressure pump |
| 08/04/2004 | CN1517547A 往复泵和真空泵 Reciprocating pumps and vacuum pumps |
| 07/29/2004 | US20040144242 Pyrotechnic microactuators for microsystems |
| 07/27/2004 | US6767189 Method for the control and regulation of the oil pressure-gas pressure relationship of diaphragm compressors |
| 07/20/2004 | US6764287 Pump provided with diaphragms |
| 07/08/2004 | US20040131472 Reciprocating pump and vacuum pump |
| 07/08/2004 | CA2559620A1 Container with tube holder |
| 07/08/2004 | CA2548141A1 Peristaltic pump head and tube holder |
| 07/07/2004 | EP1435459A2 Reciprocating pump and vacuum pump |
| 07/01/2004 | WO2004031581A3 Electroactive polymer actuated medication infusion pumps |
| 06/30/2004 | CN1508429A 泵 Pump |
| 06/23/2004 | CN1506580A Pump, cooling device and electronic equipment thereof |
| 06/16/2004 | EP1427939A1 A compact vacuum pump |
| 06/16/2004 | CN2620777Y Flexible belt type compressor |
| 06/16/2004 | CN2620776Y Mikes pipe structure |
| 06/03/2004 | US20040105764 Oscillating displacement pump |
| 05/27/2004 | WO2004044423A1 Compressor head |
| 05/27/2004 | US20040102675 Fluid pressure generating means |
| 05/27/2004 | US20040101422 Vibrating pumping stage for molecular vacuum pumps, and molecular vacuum pump with vibrating pumping stages |
| 05/19/2004 | EP1418959A1 A fluid pressure generating means |
| 05/12/2004 | EP1418366A1 Fluid cooled diaphragm |
| 05/11/2004 | US6732718 Evaporative emission control apparatus |
| 05/06/2004 | WO2004038308A1 Active micro cooler |
| 05/06/2004 | US20040086397 Fluid cooled diaphragms for diaphragm compressors |
| 04/22/2004 | US20040074233 Braking device for a motor vehicle, comprising a vacuum pump |
| 04/21/2004 | CN1146576C Proteins from mammaliam liver and their use in oncology |
| 04/20/2004 | US6722306 Air pump having minimum number of parts |
| 04/15/2004 | WO2004031581A2 Electroactive polymer actuated medication infusion pumps |
| 04/15/2004 | US20040071572 Diaphragm pump |
| 04/15/2004 | US20040069367 Vacuum device for substance extraction |
| 04/15/2004 | DE202004001051U1 Multi-headed pump used as a membrane pump for producing a vacuum comprises shut-off and switching devices integrated in the suction and pressure lines between the pump heads |
| 04/15/2004 | DE10244369B3 Hydrodynamic flow limiter for membrane head of membrane compressor has cone with bores to block oil flow from one direction and permit it from other direction, has no moving parts |
| 04/15/2004 | CA2477181A1 Electroactive polymer actuated medication infusion pumps |
| 04/14/2004 | CN1145502C Conveyer for respirator |
| 04/08/2004 | US20040068224 Electroactive polymer actuated medication infusion pumps |
| 04/07/2004 | EP1406020A2 Vibrating pumping stage for vacuum pumps, and vacuum pump with vibrating pumping stages |
| 04/06/2004 | US6716005 Pump provided with diaphragms and an eccentric rotation shaft |
| 04/01/2004 | US20040061583 Linear actuator and a pump apparatus and compressor apparatus using same |
| 03/16/2004 | US6706012 Apparatus for expressing milk |
| 03/11/2004 | WO2004020823A1 Hydraulic pump comprising an independent drive unit |
| 03/10/2004 | CN1481476A Dosing device for conveying small amounts of substances |
| 03/09/2004 | US6702167 Breastpump backpack |
| 03/03/2004 | CN1479437A Linear motion executive component and pump device and air compression device using the cornponent |
| 03/02/2004 | US6699213 Diaphragm pump protection device for a breastpump |
| 02/26/2004 | US20040035425 Respiratory assistance apparatus |
| 02/12/2004 | US20040026527 Metering device for the conveyance of small substance quantities |
| 02/04/2004 | EP1386085A1 Pyrotechnic microactuators for microsystems |
| 01/28/2004 | EP1151198B1 Pneumatic component for a control bearing |
| 01/21/2004 | CN2600613Y Vehicle repeat brake air charmber separating pump |
| 01/15/2004 | WO2004005716A1 Membrane comprising pumping devices |
| 01/08/2004 | WO2002058994A9 Vacuum device for substance extraction |
| 01/06/2004 | CA2236957C Air driven diaphragm pump |
| 01/02/2004 | EP1373731A1 Oscillating displacement pump |
| 12/18/2003 | US20030231967 Micropump assembly for a microgas chromatograph and the like |
| 12/17/2003 | CN2592896Y Transmission for strong vacuum-pumping equipment |
| 12/02/2003 | US6655931 Peristaltic compressors suitable for relaxation-free compression of polarized gas |
| 11/18/2003 | US6648502 Wrist-portable electronic apparatus and air chamber device |
| 11/13/2003 | US20030209546 Depressurizing pump assemblies and closures for beverage container |
| 11/12/2003 | CN1455848A Actuator device for force-feeding air, and air force-feed type air cell |
| 11/11/2003 | US6644940 Restarting device for a fluid operated double diaphragm piston pump |
| 11/11/2003 | US6644931 System for pumping low thermal conductivity gases |
| 11/04/2003 | US6642825 Iron core and electromagnetic driving mechanism employing the same |
| 10/30/2003 | WO2002014695A9 Method and system of pulsed or unsteady ejector |
| 10/22/2003 | CN1450265A Pressure-belt type compressor |
| 10/16/2003 | WO2003085264A1 Electromagnetic vibrating type diaphragm pump |
| 10/15/2003 | EP1353070A2 Pneumatic pressure supply system |
| 10/15/2003 | CN2580142Y Small air pump for cleannig noble instrument |
| 10/08/2003 | EP1350030A1 Dosing device for conveying small amounts of substances |
| 10/08/2003 | EP1141548B1 Peristaltic compressors adapted to non-relaxing compression of polarised gas |
| 10/02/2003 | US20030186462 Meso sniffer: a device and method for active gas sampling using alternating flow |
| 10/01/2003 | CN2577005Y Symmetric balanced metal diaphragm compressor |
| 10/01/2003 | CN1445459A 真空泵 Vacuum pump |
| 09/25/2003 | WO2003078841A1 Pump |
| 09/25/2003 | US20030180153 Vacuum pump |
| 09/24/2003 | EP1347176A2 Vacuum pump |
| 09/17/2003 | EP1343551A1 Breathing aid apparatus |
| 09/16/2003 | US6619930 Method and apparatus for pressurizing gas |
| 09/11/2003 | US20030170126 Method for optimizing the gas flow within a diaphragm compressor and compressor with optimized flow |
| 08/28/2003 | US20030162071 Actuator device for force-feeding air, and air force-feed type air cell |
| 08/13/2003 | EP1147312B1 Compression or expansion device |
| 08/13/2003 | CN2566013Y Diaphragm spring brake air chamber |
| 07/22/2003 | US6595758 Method for conveying damp gases by means of a conveyor device and a conveyor device for carrying out said method |
| 07/16/2003 | EP1327076A2 Diaphragm pump with support ring |
| 07/15/2003 | US6592339 Small pump device and sphygmomanometer using the pump device |
| 07/08/2003 | US6588209 Method and apparatus for optimizing the oil flow inside of a diaphragm compressor |
| 07/03/2003 | US20030123997 Device for delivering moist gases |
| 07/02/2003 | CN2558786Y Fluid pumping device |
| 07/02/2003 | CN1427156A Gas compression method and equipment |
| 06/12/2003 | DE20305368U1 Air pump for aquarium is fitted into a double housing for sound proofing |
| 06/10/2003 | US6575712 Air compressor system |
| 06/10/2003 | US6574960 Method and apparatus for maintaining the correct oil overflow quantity in diaphragm compressors |
| 06/05/2003 | US20030103851 Measuring gas pump |
| 06/03/2003 | US6572347 Fluid apparatus such as a pump or an accumulator |
| 05/28/2003 | CN1420272A Leather bag type vacuum water cycle pump |
| 05/21/2003 | CN2551780Y Gap type silencer air pump for fish jar |
| 05/14/2003 | EP1309800A1 Method and system of pulsed or unsteady ejector |
| 05/07/2003 | CN2549203Y Solar air pump |
| 05/07/2003 | CN2549202Y Small air pump structure |
| 05/01/2003 | US20030082056 Electromagnetic oscillating type pump and method for manufacturing the same |
| 04/24/2003 | US20030077186 Pump for gases to be measured |