Patents
Patents for F04B 45 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids (2,191)
05/2000
05/25/2000DE19853050A1 Vacuum braking pressure amplifier vacuum pump has deflectable membrane bounding working chamber, actuator coupled to membrane with armature moved by electromagnetic coil
05/18/2000WO2000028215A1 Electrostatically actuated pumping array
05/18/2000WO2000028212A1 Method for conveying damp gases by means of a conveyor device and conveyor device for carrying out said method
05/18/2000DE19851680A1 Verfahren zum Fördern feuchter Gase mittels einer Fördereinrichtung sowie Fördereinrichtung zum Durchführen dieses Verfahrens A method for conveying moist gases by means of a conveyor and conveyor for carrying out this method
05/11/2000DE19848322A1 Sanitärwanne mit Luftsprudeleinrichtung A bathroom bath with air massage device
05/09/2000US6059543 Pump appliance, in particular for a tank system of an internal combustion engine
05/04/2000WO2000025024A1 Electromagnetic blower and two-channel air supply device
04/2000
04/26/2000EP0995418A2 Aerated bath
04/13/2000DE19851859C1 Vacuum pump for motor vehicle brake servo has releasable drive coupling actuated by diaphragm exposed to operating vacuum
03/2000
03/14/2000US6035660 Refrigerated beverage mug
03/09/2000WO2000012896A1 Flexible cell assembly
01/2000
01/20/2000WO2000003141A1 Small pump device and sphygmomanometer using the pump device
01/19/2000EP0972938A2 Gas ballast device for a multistage positive displacement pump
01/13/2000DE19831123A1 Gasballasteinrichtung für mehrstufige Verdrängerpumpen Gas ballast for multi-stage displacement pumps
01/12/2000CN2358249Y Miniature air pump
12/1999
12/28/1999US6007307 Air pump with noise reduction partitions in the housing
12/23/1999WO1999066628A1 Magnetic actuator
12/21/1999US6004116 Air pump for an inflatable body having a safety holding device
12/08/1999CN2352721Y Air sack type pipet
12/08/1999CN2352720Y Oil-less inflator with flexible diaphragm
12/02/1999WO1999051882A9 Diaphragm pump and pump for double-breast pumping
10/1999
10/28/1999WO1999053984A1 Ventilation apparatus
10/27/1999EP0846007A4 Diaphragm pump and pump mounted in a carrying case useful in breast pumping
10/14/1999WO1999051882A1 Diaphragm pump and pump for double-breast pumping
09/1999
09/29/1999CN2340934Y Structure of magnetic impulsive piston pump
08/1999
08/10/1999US5934888 Aspirator pump
07/1999
07/28/1999EP0931939A2 Vacuum pump
07/13/1999US5921757 Piezoelectric fan
07/01/1999WO1999020903A3 A diaphragm compressor
06/1999
06/30/1999CN2326751Y Power-less air-supply pump for aqualung
06/23/1999CN2325551Y Telescopic type pump
06/16/1999CN1219993A Diaphragm mechanism for air driven diaphragm pump
04/1999
04/29/1999WO1999020903A2 A diaphragm compressor
04/29/1999WO1999020902A1 Air pump, air chamber device, and wrist watch provided with air chamber device
04/21/1999CN2315331Y Air sac of electromagnetic air pump
04/20/1999US5895208 Reciprocating piston machine with capillary passages on valves for pressure relief
03/1999
03/30/1999US5888056 Diaphragm pump
03/02/1999US5876190 Vacuum membrane pump and a head portion for a vacuum membrane pump
02/1999
02/03/1999EP0859912A4 Air driven diaphragm pump
01/1999
01/13/1999EP0890016A1 Diaphragm mechanism for an air driven diaphragm pump
01/13/1999CN1204734A Air pump
01/05/1999CA2086089C A method and device for producing compressed air and a wataer pumping device using the compressed air
12/1998
12/30/1998EP0887552A2 Air pump
12/30/1998EP0887478A2 Vacuum toilet system
12/02/1998EP0880650A1 Fluid circulator with a vibrating membrane
10/1998
10/27/1998US5827052 Air pump
10/14/1998EP0745187B1 Air treating device having a bellows compressor
10/08/1998DE19809804A1 Delivery membrane pump for arbitrary delivery pressures and powers
10/08/1998DE19801714A1 Low pressure compressor for gaseous media, especially ambient air
09/1998
09/02/1998EP0861142A1 Pump, pump and holder assembly, personal-care appliance, and method of assembling a pump
08/1998
08/26/1998EP0860667A1 Conditioning system of components operating at cryogenic temperature
08/26/1998EP0859912A1 Air driven diaphragm pump
08/11/1998US5792744 Proteins from mammalian liver
07/1998
07/07/1998US5776098 Diaphragm pump and pump mounted in a carrying case useful in breast pumping
06/1998
06/16/1998US5765997 Bubble generator for a washing machine
06/16/1998US5765538 Pump device for a fuel vapor retention system of an internal combustion engine
06/10/1998EP0846007A1 Diaphragm pump and pump mounted in a carrying case useful in breast pumping
06/03/1998EP0845594A2 Air Pump
05/1998
05/26/1998US5755223 Delivery device for a respirator
04/1998
04/29/1998EP0838591A1 Inhalation apparatus compressor with improved diaphragmassembly
04/28/1998US5743170 Diaphragm mechanism for an air driven diaphragm pump
03/1998
03/25/1998EP0830902A2 Pump unit (paint system)
02/1998
02/11/1998CN1172905A Diaphragm pump
01/1998
01/14/1998CN2272498Y Pressing pump of corrugated pipe type
01/07/1998EP0816677A2 Reciprocating pump
01/02/1998DE19625704A1 Vehicle tank pressure measuring process for leak testing
12/1997
12/11/1997WO1997046807A1 Force machine
11/1997
11/26/1997CN1165698A Conveyer for respirator
11/20/1997DE19639555C1 Reciprocating machine such as membrane pump or piston compressor
10/1997
10/29/1997EP0803258A2 Suction pump
10/21/1997US5678309 Process for preparing a leaf-shaped oscillatory spring for electric diaphragm pumps
10/16/1997DE19620231C1 Seal diagnosis method for fuel venting system in automobile
10/14/1997US5676527 Air pump having an adjustable stroke
10/02/1997WO1997036092A1 Diaphragm mechanism for an air driven diaphragm pump
09/1997
09/24/1997CN2263211Y 隔膜泵 Diaphragm
08/1997
08/27/1997CN1158154A Air treating device having a bellows compressor
08/14/1997WO1997029282A1 Fluid circulator with a vibrating membrane
08/13/1997CN1157024A Pumping device
07/1997
07/16/1997EP0722284B1 Inflatable article, in particular an air mattress, with a part which acts as a pump and a part which is pumped up by the pump
07/09/1997EP0783077A1 Diaphragm vacuum pump and cylinder head for a diaphragm vacuum pump
07/08/1997US5645407 Balanced single stage linear diaphragm compressor
07/01/1997US5642576 Suction dredge pump apparatus
06/1997
06/25/1997CN1152924A Proteins from mammaliam liver and their use in oncology
06/18/1997EP0778921A1 Pumping device
05/1997
05/15/1997WO1997017541A1 Air driven diaphragm pump
05/02/1997EP0770093A1 Proteins from mammalian liver and their use in oncology
04/1997
04/17/1997DE19614225C1 Delivery device for feeding breathing gas to breathing assembly
04/17/1997DE19538339A1 Compact air compressor for motor vehicle
03/1997
03/04/1997US5607290 Air driven diaphragm pump
03/04/1997US5606756 Air bedding system with diaphragm pump
02/1997
02/20/1997WO1997005913A1 Diaphragm pump and pump mounted in a carrying case useful in breast pumping
01/1997
01/23/1997WO1997002421A1 Pumping device
01/22/1997EP0754857A1 Reciprocating diaphragm pump
01/15/1997EP0753664A1 Pump fluid flow controller
01/12/1997CA2151177A1 Air controller for air pump
01/02/1997DE19523935A1 Pumpvorrichtung Pumping device
12/1996
12/31/1996US5588811 Air bed diaphragm pump
12/27/1996WO1996041955A1 Squeezebulb operated sports ball pump
12/17/1996US5584669 Two-stage positive displacement pump
12/05/1996DE19519763A1 Inhaler compressor membrane fixed between plates
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