| Patents for F04B 45 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids (2,191) |
|---|
| 11/10/1992 | CA1309995C Low-pressure air pump |
| 11/10/1992 | CA1309936C Pressure control system for rotating tire |
| 10/20/1992 | CA1309071C Compact piezoelectric fluidic air supply pump |
| 10/13/1992 | WO1992018814A1 Energy-efficient ventilation system |
| 10/13/1992 | CA2108285A1 Energy-efficient ventilation system |
| 10/07/1992 | CN2118179U All plastic toy inflator |
| 09/23/1992 | CN2116790U Aquatic animals box oxygen pump |
| 09/08/1992 | US5145338 Low pressure fluid pump |
| 09/08/1992 | CA1307248C Minimum fastener, disposable lightweight diaphragm compressor |
| 08/25/1992 | US5141409 Compression machine |
| 08/19/1992 | CN2113358U Medical smoke suction exhaust device |
| 08/18/1992 | US5139390 Pump and method for drawing vapor from a storage tank without forcibly drawing the vapor from the tank |
| 08/06/1992 | DE4103364A1 Inflation and pressure booster for inflatable casings - has sealed flexible bag with inlet and outlet valves |
| 07/30/1992 | DE4034593A1 Integral air pump for inflatable prods. - has chamber filled with resilient insert |
| 07/29/1992 | CN2111385U Automatic liquid-extracting unit |
| 07/28/1992 | US5133327 Air flow system having constant discharge volume |
| 07/22/1992 | CN1017512B Inflating-letting out air apparatus in turnning tyres |
| 06/10/1992 | CN2106916U Domestic miniature water/gas pump |
| 04/30/1992 | DE4034223A1 Atomiser for hair lacquer spray - is actuated by diaphragm pump driven by motor |
| 04/23/1992 | DE4033081A1 Blower for semiconductor device mfr. - has fine powder distributed pump action using moving coil loudspeaker movement to control powder emission |
| 03/11/1992 | EP0473616A1 Bellow-type pump with a plurality of radially arranged bellows |
| 03/05/1992 | DE4026670A1 Reciprocating membrane vacuum pump - has edges of membrane trapped between top of crankcase and cylinder head |
| 02/18/1992 | US5088903 Compressor, spray apparatus using the compressor, and air brush for the spray apparatus |
| 01/08/1992 | EP0465242A1 Method and apparatus for producing compressed air |
| 01/07/1992 | US5078581 Cascade compressor |
| 01/04/1992 | WO1992001154A1 Method of and device for providing compressed air and water pumping device using air thus compressed |
| 01/01/1992 | CN2091969U Multifunctional liquid-gas sucker |
| 12/24/1991 | US5074765 Inflatable bladder |
| 11/27/1991 | CN2089537U 便携式打气筒 Portable Inflator |
| 10/02/1991 | CN2085863U Rubber-plastics pressurizing ball |
| 10/02/1991 | CN1014166B Pulsating work cavity |
| 10/01/1991 | US5052456 Device for deflating a tire when rotating |
| 09/18/1991 | CN2084992U Peculiar smell remover for bed |
| 07/24/1991 | EP0247170B1 Improvements in vibratory diaphragm pumps |
| 06/04/1991 | USH928 Liquid compressing gas system |
| 04/17/1991 | CN2075264U High efficient flexible vane pump |
| 02/19/1991 | US4993925 Diaphragm pump with noise intercepting insert |
| 02/14/1991 | DE3926259A1 Pump supplying additional air to IC engine exhaust system - has pump which operates on air intake pulsations, fitted in air intake chamber, which feeds cylinder inlet pipes |
| 02/13/1991 | EP0412270A1 Micromechanical compressor cascade and method of increasing the pressure at extremely low operating pressure |
| 02/13/1991 | CN2071265U Inflation pump |
| 01/24/1991 | DE4019594A1 Pump for oil industry has chamber with flexible bags - and can pump mixt. contg. gases, liq. hydrocarbon(s) and solid particles without problems affecting rotary pumps |
| 11/28/1990 | CN2066513U Structure of inspirator |
| 11/24/1990 | WO1990014517A1 Bellow-type pump with a plurality of radially arranged bellows |
| 11/24/1990 | CA2057067A1 Bellow-type pump with a plurality of radially arranged bellows |
| 11/14/1990 | CN2065737U Organ type bellows |
| 11/06/1990 | US4968224 Vibrator for diaphragm pump and magnet holder therefor |
| 09/12/1990 | CN2061981U 膜片式泵 Diaphragm pumps |
| 08/14/1990 | US4947696 Bellow pump for gas test tube |
| 08/08/1990 | EP0289513B1 An arrangement for changing the pressure in pneumatic or hyd-raulic systems |
| 08/08/1990 | CN1044517A Pulsating work cavity |
| 07/11/1990 | CN2059188U Multi-functional shell-changing pump by man power or electricity |
| 06/05/1990 | US4930174 Pump assembly for air mattress |
| 05/16/1990 | EP0367988A1 Diaphragm pump |
| 05/16/1990 | CN2057230U 隔膜泵 Diaphragm |
| 05/08/1990 | US4922984 Inflation and deflation of a tire in rotation |
| 04/10/1990 | US4915126 Method and arrangement for changing the pressure in pneumatic or hydraulic systems |
| 02/14/1990 | CN2052828U Air sampling membrane pump |
| 02/06/1990 | US4898167 AIDS protection ventilation system |
| 01/31/1990 | CN2052065U Flexible connection reciprocating vacuum pump |
| 12/27/1989 | CN2050096U Piano type booster pump |
| 12/20/1989 | CN2049695U Dual-purpose gas-bag device for injecting and sucking of liquid |
| 11/28/1989 | CA1263274A1 Linear drive, dual bellows positive displacement pump |
| 10/31/1989 | US4877378 Vibratory diaphragm pumps |
| 10/19/1989 | DE3811698A1 Air pump for detector tubes |
| 08/30/1989 | CN2043677U Domestic pump-type air extractor |
| 08/22/1989 | US4859152 Electromagnetic air pump |
| 08/22/1989 | US4858478 Bellows type hand-operated air sampling pump |
| 06/27/1989 | US4842498 Diaphragm compressor |
| 04/25/1989 | US4824336 Vacuum pump |
| 03/01/1989 | CN2033453U Gas pressurizer |
| 02/28/1989 | US4807931 Air-controlled lumbar support device |
| 01/25/1989 | CN1030549A Inflating-letting out air apparatus in turnning tyres |
| 01/18/1989 | EP0299398A2 Inflation and deflation of a rotating tyre |
| 12/20/1988 | US4792293 Air pump assembly for a fish bowl |
| 12/13/1988 | US4790730 Heatable diaphragm pump for gases |
| 11/22/1988 | US4786240 Pumping apparatus with an electromagnet affixed to the septum |
| 11/09/1988 | EP0289513A1 An arrangement for changing the pressure in pneumatic or hyd-raulic systems. |
| 10/05/1988 | CN87212875U Low flow diaphragm pump |
| 09/21/1988 | CN87101956A Pipe deforming pump |
| 08/31/1988 | CN87216209U Simple hand air-charging and discharging device |
| 08/24/1988 | EP0279284A2 Heatable diaphragm pump for gases |
| 08/11/1988 | WO1988005867A1 Pumping apparatus with an electromagnetic assembly affixed to a flexible septum |
| 07/28/1988 | DE3801515A1 Compressor for fluids, in particular diaphragm air compressor |
| 07/06/1988 | CN87202681U Simple air-extracting negative pressure apparatus |
| 06/14/1988 | US4750634 To be secured to a gas supply conduit |
| 05/10/1988 | US4743169 Diaphragm-type vacuum pump device |
| 04/13/1988 | EP0263199A1 Membrane compressor |
| 04/07/1988 | DE3631746A1 Diaphragm pump |
| 02/09/1988 | US4723894 Low-pressure air pump |
| 02/03/1988 | CN87206195U Diaphragm type compressor |
| 01/26/1988 | US4721438 Motor-driven fluid pump |
| 01/13/1988 | CN87202825U Isolated-bladdered piston or post stopper mechanism |
| 01/12/1988 | US4718836 Reciprocating completely sealed fluid-tight vacuum pump |
| 12/12/1987 | CN86210607U Dual purpose diaphragm type pump |
| 12/12/1987 | CN86208201U Low-noise oil-free air pump with dual-diaphragm driven by single-phase motor |
| 12/02/1987 | EP0247170A1 Improvements in vibratory diaphragm pumps. |
| 07/30/1987 | WO1987004499A1 A method and arrangement for changing the pressure in pneumatic or hydraulic systems |
| 07/28/1987 | US4682937 Double-acting diaphragm pump and reversing mechanism therefor |
| 06/18/1987 | WO1987003650A1 Improvements in vibratory diaphragm pumps |
| 06/16/1987 | US4673336 Diaphragm gas pump |