| Patents for F04C 5 - Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable (932) |
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| 09/25/2008 | US20080231654 Tube pump, liquid ejecting apparatus, and method of driving tube pump |
| 09/24/2008 | CN201121583Y Extension type full-metal single screw oil pump |
| 09/24/2008 | CN201121582Y High-pressure large-flux single screw pump |
| 09/23/2008 | CA2311175C Progressive cavity pump with composite stator and its manufacturing process thereof |
| 09/10/2008 | EP1381412A4 Feeding set adaptor |
| 09/10/2008 | CN201111555Y Equal-wall thickness hollow screw pump rotor |
| 08/28/2008 | WO2008102723A1 Tube pump, and pump rotor |
| 08/28/2008 | CA2678589A1 Flexible impeller pumps for mixing individual components |
| 08/13/2008 | CN201100233Y A single spiral pump |
| 08/07/2008 | US20080187451 Feed Unit |
| 07/30/2008 | CN201092958Y Screw type self-sucking high-pressure water pump |
| 07/23/2008 | CN201090439Y Seal structure body on electric engine direct drive type screw pump drive unit |
| 07/23/2008 | CN201090438Y Crushed type sewage pump |
| 07/15/2008 | CA2260634C Elastomeric stator for an eccentric spiral pump |
| 06/18/2008 | CN201074590Y Pump for abstraction of dung liquid |
| 06/04/2008 | CN201068858Y Simplified type oil-submersible electric screw pump |
| 05/07/2008 | CN201057148Y Stator housing of screw oil pump |
| 05/07/2008 | CN201057147Y Pumping rod guide apparatus of screw pump |
| 05/07/2008 | CN101173662A Progressing cavity pump with wobble stator and magnetic drive |
| 04/16/2008 | CN101162018A Decelerator-free oil-submersible screw pump |
| 04/10/2008 | DE102006047613A1 Peristaltische Mikropumpe mit wechselbarem Pumpenkopf A peristaltic micropump with interchangeable pump head |
| 03/27/2008 | DE202007015453U1 Zählung der Rotorumdrehungen bei Schlauchquetschpumpen Count of rotor revolutions in peristaltic pumps |
| 03/19/2008 | EP1899607A1 Feed unit |
| 03/19/2008 | CN201037459Y Ceramic rotor screw pump |
| 03/19/2008 | CN201037458Y Deep-etching-resisting screw pump |
| 03/05/2008 | CN100373054C Guilding and conducting system of hung electric submersible screw pump |
| 02/27/2008 | CN201027649Y Separate-layer oil extraction screw pump |
| 02/27/2008 | CN201027648Y Straight-rotary screw pump |
| 02/14/2008 | US20080038129 Tube Cassette Unit and Liquid Conveyance Device Using the Same |
| 01/30/2008 | CN201013587Y Straight-line driving type intermittent rotating screw pump |
| 01/30/2008 | CN201013586Y Waterpower screw pump |
| 01/09/2008 | CN101100991A Down-hole oil production screw pump fixer |
| 01/09/2008 | CN101100990A Down-hole screw pump oil production device |
| 12/26/2007 | CN200996377Y Single-screw pump |
| 12/20/2007 | DE102006025009A1 Schlauchpumpe Peristaltic pump |
| 12/19/2007 | CN200993099Y Mechanical sealing device for screw pump ground driving device |
| 12/19/2007 | CN101090975A Process for producing amide compound and acrylamide polymer |
| 11/28/2007 | CN200982295Y Water pump |
| 11/28/2007 | CN200982294Y 水泵 Pump |
| 11/28/2007 | CN200982293Y Direct-driven submersible electric pump |
| 11/27/2007 | US7300264 Peristaltic pump |
| 11/14/2007 | CN200975340Y Multi-line screw pump |
| 11/14/2007 | CN200975339Y High concentration pump |
| 11/14/2007 | CN101070843A Equi-wall-thickness hollow screw-bar pump rotor |
| 11/06/2007 | CA2292660C Temperature compensation system for regulating flow through tubing in a pump |
| 11/01/2007 | US20070253852 Compact Eccentric Screw Pump |
| 10/31/2007 | CN200968285Y Axial force hydraulic balancing device on electric immersible screw pump |
| 10/24/2007 | CN200964937Y Screw pump driving device for oil well |
| 10/11/2007 | DE102006016806A1 Verdrängermaschine Displacement |
| 09/27/2007 | WO2007108721A1 Rotary pump |
| 09/27/2007 | CA2646455A1 A rotary pump |
| 09/19/2007 | EP1835033A1 Process for producing amide compound and acrylamide polymer |
| 09/18/2007 | US7270106 Free-planetary gear moderated nutating (athena) engine |
| 09/13/2007 | DE102006011346A1 Verfahren und Vorrichtung zum Betreiben einer elektrischen peristaltischen Schlauchpumpe Method and apparatus for operating an electric peristaltic hose pump |
| 09/12/2007 | CN200946562Y Three-stage speed-reducing drive device of screw pump |
| 08/29/2007 | CN101027484A Rotary pump with resiliently deformed seal |
| 08/29/2007 | CN101025157A Screw-pump and screw motor stator |
| 08/23/2007 | DE102006008325A1 Schlauchkassette für eine peristaltische Pumpe Tube cassette for a peristaltic pump |
| 08/15/2007 | EP1282777B1 Rotating piston pump |
| 08/15/2007 | CN2934656Y Screw pump oil production device for down-hole |
| 08/15/2007 | CN101016898A Straight line driving reciprocating rotation screw pump |
| 08/02/2007 | WO2007086186A1 Roller pump |
| 08/02/2007 | US20070175202 Axial flow positive displacement worm compressor |
| 08/01/2007 | CN2929260Y Liquid circulation type screw oil-gas mixed transport pump |
| 08/01/2007 | CN2929250Y Machinery seal bottom fixed screw oil pump power head |
| 07/10/2007 | US7241119 Tube pump and liquid injection apparatus |
| 07/04/2007 | CN2918798Y Series-wound laminated oil extraction screw pump |
| 07/04/2007 | CN2918797Y Laminated oil extraction screw pump |
| 07/04/2007 | CN2918796Y Pump housing of screw pump |
| 06/28/2007 | DE102005061331A1 Extruder pump for transporting viscous fluids, in particular polymer melts and/or rubber compounds, is connected to a peristaltic pump for pulsed volumetric delivery of materials |
| 06/21/2007 | US20070140883 Progressive cavity pump/motor stator, and apparatus and method to manufacture same by electrochemical machining |
| 06/21/2007 | US20070140882 Eccentric screw pump equipped with erosion-resistant rotor |
| 06/07/2007 | US20070128062 Eccentric Screw Pump Having Conical Sealing Surfaces |
| 05/30/2007 | EP1789682A1 Hybrid pump |
| 05/30/2007 | CN2906138Y Subsurface progressing cavity pump anchoring device for oil production |
| 05/30/2007 | CN2906129Y Frequency conversion drive device for direct drive type screw pump |
| 05/23/2007 | EP1788249A2 Positive-displacement pump |
| 05/23/2007 | EP1787027A1 Rotary pump with resiliently deformed seal |
| 05/09/2007 | EP1448894B1 Auto suction hybrid pump |
| 05/09/2007 | CN1959111A Hydraulic thrust mechanism of axial force in electrical single-screw submersible pump |
| 04/18/2007 | CN2890422Y Anti-corrosion wearable single-screw pump |
| 04/18/2007 | CN1948758A Electric motor screw pump |
| 03/15/2007 | WO2005081890A3 Archimedean conveyors and combustion engines |
| 03/15/2007 | US20070059191 Stator system |
| 03/14/2007 | CN1928366A Antiseptic antiwear single screw pump |
| 03/08/2007 | US20070053783 Stator for an eccentric screw pump or an eccentric worm motor operating on the moineau principle |
| 03/01/2007 | DE102005055013B3 Peristaltic pump for pumping fluid has rams on rotor pressing against hose and connected to each other by spring webs |
| 02/14/2007 | EP1752663A1 Tube cassette unit and liquid conveyance device using the same |
| 02/14/2007 | CN2869388Y Equal-wall-thickness stator screw pump for oil production |
| 01/24/2007 | CN1900520A Layered oil producing screw pump |
| 01/17/2007 | CN2859008Y Down-well monotubular type single screw pump |
| 01/11/2007 | WO2007003456A1 Feed unit |
| 01/03/2007 | CN2854146Y Driving single screw pump |
| 01/03/2007 | CN2854145Y Single screw pump for liquid pumping circulation system |
| 01/03/2007 | CN2854144Y Large torque single screw pump |
| 12/05/2006 | US7144231 Peristaltic pump with ganged tubes |
| 11/23/2006 | DE112005000156T5 Verfahren und Vorrichtung für einen Formschlauch und eine Schlauchquetschpumpe Method and apparatus for a molded hose and a peristaltic pump |
| 10/10/2006 | US7118203 Peristaltic pump |
| 09/28/2006 | US20060216178 Downhole motor seal and method |
| 09/27/2006 | CN2821226Y Pressure balance device of electric submersible screw pump |