| Patents for F04B 7 - Piston machines or pumps characterised by having positively-driven valving (2,226) |
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| 04/25/2012 | EP2270334B1 Metering pump and its driving device |
| 04/19/2012 | US20120093670 High-Pressure Fuel Supply Pump Having Electromagnetically-Driven Intake Valve |
| 04/17/2012 | US8157548 Supply pump, in particular for supplying diesel fuel, with improved bearing of the drive shaft |
| 04/17/2012 | CA2541121C Liquid drug delivery micropump |
| 04/11/2012 | CN102414446A 压缩机阀门布置 Compressor valve arrangement |
| 04/11/2012 | CN102414445A 包含压力吸收器的正位移泵 Positive displacement pump comprising a pressure absorber |
| 04/05/2012 | WO2011140089A3 Double-acting subterranean pump |
| 04/04/2012 | EP2436927A1 Distributing valve for concrete pump, concrete pump and control method thereof and concrete pump vehicle |
| 03/29/2012 | WO2012038050A1 Hydraulic machine with electronically controlled valves |
| 03/20/2012 | US8139973 Air discharging apparatus and image forming apparatus |
| 03/07/2012 | EP2425134A2 Compressor valve arrangement |
| 03/01/2012 | WO2011113469A3 Metering pump |
| 03/01/2012 | DE102010035457A1 Ventilanordnung, Anschlussplatte für eine hydrostatische Kolbenmaschine und hydrostatische Kolbenmaschine Valve assembly, connection plate for a hydrostatic piston engine and hydrostatic piston engine |
| 02/29/2012 | EP2422087A1 Positive-displacement pump including a pressure absorber |
| 02/28/2012 | US8123504 Piston pump for thick materials |
| 02/23/2012 | WO2012022444A1 Device having valve-controlled piston engines |
| 02/23/2012 | US20120042773 Pump Piston Device |
| 02/16/2012 | WO2011020552A3 Rotary piston pump for metering a coating agent |
| 02/09/2012 | US20120034115 Method of operating a pump/motor |
| 02/08/2012 | CN102348893A Fluid working machine and method of operating a fluid working machine |
| 02/08/2012 | CN101142406B 固定和可变压缩机系统的控制系统、控制方法以及控制器 Fixed and variable compressor system control system, a control method and a controller |
| 02/01/2012 | EP2247855B1 Rocking piston compressor |
| 01/17/2012 | US8096789 Simplified cleaning and filling device with a piston |
| 01/12/2012 | WO2011145090A3 Sorption pump with mechanical activation of getter material and process for capturing of active gases |
| 01/05/2012 | WO2012002141A1 Reciprocating pump |
| 01/05/2012 | US20120003110 Pump for dosing fluids |
| 12/29/2011 | WO2011163274A2 Rotary air connection with central valve for tire inflation system |
| 12/28/2011 | CN102301137A 制冷设备的气体压缩机的抽吸阀的阀致动系统 Refrigeration equipment, gas compressor suction valve valve actuation system |
| 12/15/2011 | WO2011114285A3 Micropump |
| 12/14/2011 | CN102282370A 用于输送糊状物料的方法和用于输送糊状物料的泵装置 Method for transporting material and a paste pumping means for conveying pasty material |
| 12/14/2011 | CN101657642B 活塞泵 Piston pump |
| 12/08/2011 | WO2011010198A3 Fluid delivery system comprising a fluid pumping device and a drive system |
| 12/08/2011 | US20110296823 Systems and methods for energy storage and recovery using gas expansion and compression |
| 11/28/2011 | CA2731458A1 Ball valve device and method for forming a ball retainer in a check valve |
| 11/24/2011 | WO2011145090A2 Sorption pump with mechanical activation of getter material and process for capturing of active gases |
| 11/23/2011 | EP2387668A2 Fluid working machine and method of operating a fluid working machine |
| 11/23/2011 | EP2387667A1 Method for feeding pasty masses and pump device for feeding pasty masses |
| 11/23/2011 | EP2307720B1 Fluid working machines and methods |
| 11/23/2011 | CN102257272A A volumetric pump and its driving mechanism |
| 11/17/2011 | US20110280754 Cam-type pump structure for a refrigerant recycling machine |
| 11/10/2011 | WO2011140089A2 Double-acting subterranean pump |
| 11/10/2011 | US20110274572 Method for feeding pasty masses and pump device for feeding pasty masses |
| 11/03/2011 | US20110268590 Fluid working machines and methods |
| 11/03/2011 | DE19546299B4 Doppelkolbenpumpe Double piston pump |
| 11/01/2011 | US8047810 Double-headed piston type compressor |
| 10/26/2011 | EP2381105A1 Slurry pump |
| 10/26/2011 | EP2379885A1 Dosing pump |
| 10/26/2011 | EP2148986B1 Pump |
| 10/26/2011 | CN101571696B Air discharging apparatus and image forming apparatus |
| 10/12/2011 | EP2373891A1 Valve actuation system for a suction valve of a gas compressor for refrigeration equipment |
| 10/06/2011 | US20110244075 Method for preparing a dairy product |
| 09/22/2011 | WO2011116061A1 Over-center linkage |
| 09/22/2011 | WO2011114285A2 Micropump |
| 09/22/2011 | WO2011113469A2 Metering pump |
| 09/22/2011 | CA2791093A1 Over-center linkage |
| 09/15/2011 | WO2011069494A3 Continuously conveying infusion pump |
| 09/13/2011 | CA2656624C Pump element and pump having such a pump element |
| 09/08/2011 | US20110217196 Plunger Pump for Fabricating Soft Capsules |
| 09/01/2011 | WO2011104549A2 Fluid-working machine and method of operating a fluid-working machine |
| 09/01/2011 | WO2011104548A2 Fluid-working machine and method of operating a fluid-working machine |
| 09/01/2011 | WO2011104547A2 Fluid-working machine valve timing |
| 09/01/2011 | WO2011104546A2 Fluid working machine and method of operating fluid working machine |
| 09/01/2011 | WO2011104545A2 Method of measuring a property of entrained gas in a hydraulic liquid and fluid-working machine |
| 09/01/2011 | WO2011104543A2 Fluid working machine and method of operating fluid working machine |
| 08/30/2011 | US8007843 Method for preparing a dairy product |
| 08/30/2011 | US8007251 Radial piston fuel supply pump |
| 08/24/2011 | EP2170493B1 Dual chamber mixing pump |
| 08/10/2011 | EP2354546A1 Membrane vacuum pump |
| 08/10/2011 | EP2352920A1 A volumetric pump and its driving mechanism |
| 08/09/2011 | CA2632199C Positive displacement pumping device comprising a joint-free dispensing member |
| 08/09/2011 | CA2480228C Gas operated automatic, liquid pumping system for wells |
| 07/28/2011 | DE102010005429A1 Hydro machine, particularly for use as axial piston machine in swash plate design, has multiple pistons which are guided into cylinder body to apply drive force on output- or drive shaft or to receive drive force from output- or drive shaft |
| 07/21/2011 | DE102010004808A1 Ventilgesteuerte Verdrängermaschine Valve-controlled displacement |
| 07/20/2011 | CN101484700B Pump element and pump comprising such a pump element |
| 07/14/2011 | WO2011083125A1 Metering device and metering method |
| 07/13/2011 | EP1550508B1 Substance-atomizing apparatus |
| 07/13/2011 | CN102124222A Fluid working machines and methods |
| 07/13/2011 | CN102124221A Fluid working machines and methods |
| 07/06/2011 | CN102119274A Dedicated pulsing valve for compressor cylinder |
| 06/28/2011 | CA2557146C Piston pump for thick materials |
| 06/23/2011 | WO2011007306A3 Pump with rotor position measurement system |
| 06/22/2011 | CN102102650A Cylidner and distribution head unit equipped with the same |
| 06/16/2011 | WO2011069494A2 Continuously conveying infusion pump |
| 06/09/2011 | WO2011043787A3 Pulse pump |
| 06/08/2011 | CN101460742B A volumetric pump comprising a driving mechanism |
| 06/02/2011 | US20110126804 Common rail fuel pump with combined discharge and overpressure relief valves |
| 06/01/2011 | EP2326838A2 Dedicated pulsing valve for compressor cylinder |
| 05/31/2011 | US7950905 Radial piston fuel supply pump |
| 05/26/2011 | US20110123354 Fluid-working machine and operating method |
| 05/19/2011 | US20110116957 Reciprocating pump |
| 05/12/2011 | WO2011054533A1 High-viscosity material delivery device having a seal element |
| 05/11/2011 | CN102052274A Integrated valve assigning plunger pump |
| 04/28/2011 | WO2011048456A1 Fuel pump |
| 04/28/2011 | US20110097229 Feedback Controlled Syringe Pump |
| 04/28/2011 | US20110097228 High-Pressure Fuel Supply Pump and Fuel Supply System |
| 04/19/2011 | US7927082 Highly efficient durable fluid pump and method |
| 04/14/2011 | WO2011043787A2 Pulse pump |
| 04/13/2011 | EP2307721A1 Fluid working machines and methods |
| 04/13/2011 | EP2307720A1 Fluid working machines and methods |
| 03/08/2011 | CA2632146C Adapter plate in a pump of a beverage system |