| Patents for F04B 7 - Piston machines or pumps characterised by having positively-driven valving (2,226) |
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| 05/19/2005 | WO2005044317A2 Method and device for supplying at least one machining station for a workpiece |
| 05/19/2005 | WO2004085890A3 Embraced moving cylinder and methods of using same |
| 05/19/2005 | DE10347716A1 Radial piston pump has array of pistons in cylinders with profiled fluid inlet windows |
| 05/12/2005 | WO2004106733A3 Positive displacement pump having piston and/or liner with vapor deposited polymer surface |
| 05/06/2005 | WO2005039674A1 Liquid drug delivery micropump |
| 05/06/2005 | WO2004103888A3 Systems and methods for providing a dynamically adjustable reciprocating fluid dispenser |
| 05/04/2005 | EP1527793A1 Liquid drug delivery micropump |
| 04/28/2005 | WO2005037109A1 Plunger pair |
| 04/28/2005 | US20050089417 Positive displacement pump |
| 04/14/2005 | WO2005033507A1 Sliding device for a viscous material pump, and wear strip therefor |
| 04/07/2005 | US20050072815 Apparatus for dispensing precise amounts of a non-compressible fluid |
| 04/05/2005 | US6876094 Resonant electrical generation system |
| 03/31/2005 | US20050069438 Hydraulic device for pumping molten metal and/or controlling a molten metal flow |
| 03/31/2005 | US20050069424 Micro pump using ferrofluid or magneto-rheological fluid |
| 03/24/2005 | US20050063839 Device for delivering fixed quantity of liquid |
| 03/17/2005 | WO2005024229A2 Sanitary pump and sanitary valve |
| 03/09/2005 | EP1206639B1 Method for feeding particulate matter |
| 03/09/2005 | CN1590761A Pump controller for precision pumping apparatus |
| 03/03/2005 | DE102004036555A1 Pump system for chain saw, has adjustable oil pump regulated by a chain saw operator to adjust the quantity of oil being conveyed, while a basic oil pump is connected in parallel to the adjustable oil pump |
| 02/24/2005 | WO2005017356A1 Dispensing pump having servo driven linear actuator |
| 02/24/2005 | US20050042120 Fluid-moving device with an internal passageway and a clearance seal |
| 02/22/2005 | US6857861 Ring for concrete pump |
| 02/17/2005 | US20050036896 Sanitary pump and sanitary valve |
| 02/16/2005 | CN1580552A Pump system for conveying lubricating oil |
| 02/03/2005 | US20050025636 Pump system for conveying lubricating oil |
| 02/02/2005 | CN1573455A Liquid crystal dispensing system using spacer information and method of dispensing liquid crystal material using the same |
| 01/27/2005 | US20050019195 Rotary piston pump |
| 01/27/2005 | US20050019187 Internal screw positive rod displacement metering pump |
| 01/20/2005 | US20050013708 Systems and methods for providing a dynamically adjustable reciprocating fluid dispenser |
| 01/19/2005 | CN1568278A Continuous positive displacement metering valve |
| 01/13/2005 | WO2005003559A1 Piston pump |
| 01/13/2005 | US20050006410 Precision fluid dispensing system |
| 01/06/2005 | WO2005001283A2 Integrated pump and ceramic valve |
| 01/05/2005 | EP1226385B1 Lubricant pump |
| 12/30/2004 | US20040265142 Integrated pump and ceramic valve |
| 12/30/2004 | US20040261895 Liquid crystal dispensing system using spacer information and method of dispensing liquid crystal material using the same |
| 12/23/2004 | WO2004111509A1 Three-way poppet valve for work exchanger |
| 12/09/2004 | WO2004106733A2 Positive displacement pump having piston and/or liner with vapor deposited polymer surface |
| 12/02/2004 | WO2004103888A2 Systems and methods for providing a dynamically adjustable reciprocating fluid dispenser |
| 12/02/2004 | US20040241023 Positive displacement pump having piston and/or liner with vapor deposited polymer surface |
| 11/25/2004 | US20040234377 Dosing pump |
| 11/24/2004 | EP1479154A2 Resonant electrical generation system |
| 11/23/2004 | US6821097 Concrete pump with S-tube valve assembly with wear ring-spring-retainer ring construction |
| 11/18/2004 | DE10164813B4 Drehkolbenpumpe Rotary pump |
| 11/11/2004 | WO2004097220A1 Piston vacuum pump |
| 11/11/2004 | DE10318735A1 Kolbenvakuumpumpe Piston vacuum pump |
| 11/10/2004 | CN1175182C Pump controller for precision pumping appts. |
| 11/04/2004 | US20040219041 Magnetically actuated pump |
| 11/03/2004 | EP1082544B1 Piston pump |
| 11/03/2004 | EP0897473B1 Disposable ambulatory microprocessor controlled volumetric pump |
| 10/14/2004 | WO2004025119A3 Thick material pump |
| 10/07/2004 | WO2004085890A2 Embraced moving cylinder and methods of using same |
| 09/23/2004 | US20040182333 Embraced moving cylinder and methods of using same |
| 09/22/2004 | EP1458508A1 Hydraulic device for pumping molten metal and/or controlling a molten metal flow |
| 09/22/2004 | CN1530176A Placode processor and liquid feeder |
| 09/21/2004 | US6793467 Thick matter pump |
| 09/15/2004 | EP1456539A1 Dosing pump |
| 08/25/2004 | EP1448895A1 Rotary piston pump |
| 08/18/2004 | EP1446339A1 Continuous positive displacement metering valve |
| 08/11/2004 | EP1305522A4 Resonator pumping system |
| 07/28/2004 | CN1516784A Device for delivering fixed quantity of liquid |
| 07/21/2004 | EP1315905B1 Fluid-moving device with integrated valve |
| 07/15/2004 | WO2004059165A1 A structure and the manufacturing method for friction parts on concrete pump |
| 07/15/2004 | US20040136850 Dual port unit pump injector, and engine efficiency methods |
| 07/07/2004 | EP1435456A2 Hydraulic Pump |
| 07/01/2004 | DE10257951A1 Kolbenkompressor Piston Compressor |
| 06/30/2004 | EP1412088A4 Precision fluid dispensing system |
| 06/29/2004 | US6755630 Apparatus for compressing fluid |
| 06/29/2004 | US6755628 Valve body for a traveling barrel pump |
| 06/29/2004 | US6755622 Fuel metering pump for a heater, especially an additional heater or a parking heater of a motor vehicle |
| 06/24/2004 | WO2004053331A1 Piston compressor |
| 06/09/2004 | EP1133639B1 Pump controller for precision pumping apparatus |
| 06/03/2004 | WO2004046551A1 Positive and negative pressure supply device |
| 06/03/2004 | US20040104252 Device for the metered delivery of a viscous liquid |
| 06/02/2004 | EP0977948A4 Dry vacuum pump |
| 06/01/2004 | US6742993 Method and apparatus for dispensing fluids |
| 05/27/2004 | WO2003075441A3 Resonant electrical generation system |
| 05/27/2004 | US20040101426 Pump |
| 05/25/2004 | US6739478 Precision fluid dispensing system |
| 05/13/2004 | WO2004040135A1 A reciprocating liquid pump for delivery of liquid fuel to a domestic burner device |
| 05/11/2004 | US6733256 Device for producing consumables |
| 05/11/2004 | US6733253 Hydraulic air compressor having an automatic water valve regulation mechanism |
| 05/11/2004 | US6732647 Pump for inking or like purposes |
| 05/05/2004 | CN2614275Y Piston-type pump |
| 04/28/2004 | EP1412088A2 Precision fluid dispensing system |
| 04/22/2004 | US20040076534 Metering pump |
| 04/20/2004 | US6722862 Metering pump with combined inlet/outlet valve element |
| 04/15/2004 | US20040071575 Concrete pump with S-tube valve assembly with retainer ring for spring |
| 04/14/2004 | EP1407143A2 Magnetically actuated pump |
| 04/13/2004 | US6719542 Pump for printing press |
| 04/01/2004 | WO2004026481A1 Substance-atomizing apparatus |
| 03/25/2004 | WO2004025122A1 Fluid-working machine and operating method |
| 03/25/2004 | WO2004025119A2 Thick material pump |
| 03/16/2004 | US6705845 Device for the metered delivery of a viscous liquid |
| 03/11/2004 | DE10240256A1 Pump for viscous fluid has load pressure device wholly or partly connected to supply line in switching phase region |
| 03/09/2004 | US6702557 Valve assembly prohibiting re-expansion of residual fluid |
| 03/03/2004 | EP1097304B9 Air drive pumps and components therefor |
| 02/26/2004 | WO2004016947A1 Energy recycling pump |
| 02/25/2004 | EP1390617A1 Dual port unit pump, injector, and engine efficiency methods |
| 02/25/2004 | CN1139740C Lubricant oil pump device |