| Patents for F04B 45 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids (2,191) |
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| 04/23/2003 | CN2546650Y Micro-pumping air flow guide improved structure |
| 04/23/2003 | CN1412434A Diaphragmless pump |
| 04/16/2003 | CN2545391Y Leather bag type vacuum water circulation pump |
| 04/15/2003 | US6547749 Body pulsating method and apparatus |
| 04/10/2003 | US20030068242 Pump provided with diaphragms |
| 04/10/2003 | US20030068234 Pump provided with diaphragms |
| 04/09/2003 | EP1299648A1 Body pulsating method and apparatus |
| 04/08/2003 | US6544005 Diaphragm for a diaphragm pump |
| 04/01/2003 | US6539975 Arrangement for maintaining gas in a variable volume container at a constant pressure |
| 03/25/2003 | US6538873 Active electrostatic seal and electrostatic vacuum pump |
| 03/18/2003 | US6533560 Electromagnetic oscillating type pump and method for manufacturing the same |
| 03/13/2003 | US20030049145 Hydraulically powered diaphragm pump with pretensioned diaphragm |
| 03/12/2003 | EP1291524A2 Hydraulic diaphragm pump with prestressed diaphragm |
| 02/27/2003 | WO2003016719A1 A compact vacuum pump |
| 02/26/2003 | CN1399071A Air pump |
| 02/26/2003 | CN1399070A Multiple-cavity piezoelectric film driven pump |
| 02/13/2003 | WO2003011365A1 A fluid pressure generating means |
| 02/13/2003 | US20030031573 Personal air sampling system and pump for use therein |
| 02/13/2003 | US20030031572 Personal air sampling system and pump for use therein |
| 02/13/2003 | US20030031571 Pump provided with diaphragms |
| 02/13/2003 | US20030031565 Method for the control and regulation of the oil pressure-gas pressure relationship of diaphragm compressors |
| 02/13/2003 | CA2419809A1 A fluid pressure generating means |
| 02/11/2003 | USRE37983 Air pump |
| 02/11/2003 | US6517329 Switching means supplies alternating current to both first and second coils to supply aeration air into septic tank, and temporarily supplies, in response to control signal from timer, current to only one coil to supply reverse cleaning air |
| 02/04/2003 | US6514177 Inhaling apparatus compressor with improved diaphragm assembly |
| 02/04/2003 | US6514047 Linear resonance pump and methods for compressing fluid |
| 01/29/2003 | EP1278962A1 Device for delivering moist gases |
| 01/22/2003 | CN2532272Y Water-proof gas pump |
| 01/15/2003 | EP1274940A1 Pump for gases to be measured |
| 01/15/2003 | EP1274939A1 Measuring gas pump |
| 01/09/2003 | US20030006870 Iron core and electromagnetic driving mechanism employing the same |
| 01/02/2003 | US20030004459 Apparatus for expressing milk |
| 12/25/2002 | CN2527739Y Low noise low temp. oil-free electromagnetic air pump |
| 12/22/2002 | CA2391771A1 Depressurizing pump assemblies and closures for beverage container |
| 11/27/2002 | CN1381773A Electronic instrument and air chamber device putted on wrist |
| 11/26/2002 | US6485270 Air pump with noise silence arrangement |
| 11/21/2002 | US20020173734 Wrist-portable electronic apparatus and air chamber device |
| 11/21/2002 | US20020170935 Breastpump backpack |
| 11/19/2002 | US6481986 Vacuum adjustment mechanism particularly adapted for a breastpump |
| 11/14/2002 | WO2002090772A1 Devices and methods for compressing a fluid |
| 11/07/2002 | WO2002088551A1 Pyrotechnic microactuators for microsystems |
| 11/07/2002 | US20020164255 Linear resonance pump and methods for compressing fluid |
| 11/06/2002 | CN1093915C Air pump and its inflation article |
| 10/29/2002 | US6472968 Iron core and electromagnetic driving mechanism employing the same |
| 10/29/2002 | US6471143 Injector |
| 10/17/2002 | WO2002081918A1 Oscillating displacement pump |
| 10/17/2002 | US20020150479 Method and apparatus for pressurizing gas |
| 10/17/2002 | DE10117418A1 Oszillierende Verdrängerpumpe Reciprocating positive displacement pump |
| 10/08/2002 | US6461125 Air pump, air chamber device using air pump, and wristwatch having air chamber device |
| 09/26/2002 | US20020136649 Pneumatic component for a control bearing |
| 09/25/2002 | EP1243795A1 A two-stage vacuum pump |
| 09/19/2002 | US20020131870 System for pumping low thermal conductivity gases |
| 09/17/2002 | US6450773 Piezoelectric vacuum pump and method |
| 09/12/2002 | US20020125342 Injector |
| 09/05/2002 | US20020121270 Evaporative emission control apparatus |
| 09/03/2002 | US6443713 Diaphragm pump with support ring |
| 08/29/2002 | WO2002066834A1 Actuator device for force-feeding air, and air force-feed type air cell |
| 08/29/2002 | DE10107365A1 Saugvorrichtung Suction device |
| 08/22/2002 | US20020114711 Air pump with noise silence arrangement |
| 08/14/2002 | EP1230942A2 Gas container |
| 08/13/2002 | US6432721 Meso sniffer: a device and method for active gas sampling using alternating flow |
| 08/08/2002 | US20020104539 Arrangement for maintaining gas in a variable volume container at a constant pressure |
| 08/07/2002 | EP1131558B1 Method for conveying damp gases by means of a conveyor device and conveyor device for carrying out said method |
| 08/06/2002 | US6427729 Method and system of indirect-pressurization of natural gas |
| 08/01/2002 | WO2002058994A1 Vacuum device for substance extraction |
| 07/31/2002 | EP1226359A1 Active electrostatic seal and electrostatic vacuum pump |
| 07/31/2002 | CN2503227Y Elastic diaphragm reciprocating suction-exhaust device |
| 07/24/2002 | EP1224458A2 The meso sniffer: a device and method for active gas sampling using alternating flow |
| 07/18/2002 | WO2002033256A3 Diaphragm pump with support ring |
| 07/17/2002 | CN1358937A Restarting device of pump |
| 07/11/2002 | WO2002053914A1 Diaphragm pump |
| 07/10/2002 | EP1220991A1 Multi-stage diaphragm-type compressor |
| 07/10/2002 | CN1358257A Combination of chamber and piston pump, motor, shock absorber and transducer incorporating the combination |
| 07/04/2002 | WO2002052154A1 Dosing device for conveying small amounts of substances |
| 07/04/2002 | WO2002051484A1 Breathing aid apparatus |
| 07/04/2002 | DE10065855A1 Dosiervorrichtung zur Förderung geringer Stoffmengen Metering to promote small quantities of material |
| 07/03/2002 | EP1219833A1 Diaphragm pump |
| 07/03/2002 | EP1219315A1 Respiratory assisting device |
| 06/26/2002 | EP1217212A2 Restarting device of a pump |
| 06/20/2002 | US20020076340 Restarting device of a pump |
| 06/19/2002 | CN1354823A Electrostatically actuated pumping array |
| 06/04/2002 | US6397844 Respiration apparatus |
| 05/30/2002 | US20020064468 Diaphragm for a diaphragm pump |
| 05/22/2002 | EP1206641A1 Membrane pump |
| 05/16/2002 | US20020056366 Method and apparatus for maintaining the correct oil overflow quantity in diaphragm compressors |
| 05/07/2002 | US6382935 Electromagnetic diaphragm pump |
| 05/07/2002 | US6382928 Miniature air pump |
| 04/25/2002 | WO2002033256A2 Diaphragm pump with support ring |
| 04/18/2002 | US20020044874 Method and apparatus for optimizing the oil flow inside of a diaphragm compressor |
| 04/11/2002 | DE10044822C1 Vorrichtung zum Prüfen der Dichtheit von Ventilen in einer Gasstrecke Apparatus for testing the tightness of valves in a gas line |
| 04/10/2002 | CN2485448Y High-efficiency pump air pocket |
| 04/02/2002 | US6364637 Air pump apparatus |
| 03/26/2002 | US6361284 Vibrating membrane fluid circulator |
| 03/20/2002 | CN2482594Y Pneumatic diaphragm pump |
| 03/19/2002 | US6358023 Moment pump |
| 03/13/2002 | EP1186779A1 Device for testing the valve sealing in a gas pipe |
| 03/13/2002 | CN2481875Y Sealing diaphragm of exhaust port for vacuum pump |
| 03/13/2002 | CN2481874Y Follow-up diaphragm of cylinder end face |
| 03/12/2002 | US6354817 Pressurized air supplying device for vehicle |
| 03/07/2002 | DE10056708C1 Oil flow optimization device, for membrane compressor, has valve plate used for closing holes in central area of aperture plate during pressure stroke of compressor piston |