Patents for F04C 2 - Rotary-piston machines or pumps (14,296)
03/2015
03/05/2015US20150064042 Gas compressor
03/05/2015US20150064039 Fluid machine and rankine cycle
03/05/2015US20150064038 Internal gear pump
03/05/2015US20150064037 Helical rotor, progressing cavity pump and pumping device
03/05/2015DE112005000100B4 Ölpumpe und automatisches Getriebe, welches diese umfasst Oil pump and an automatic transmission which includes this
03/05/2015DE102014215757A1 Gerotorpumpe Gerotor pump
03/05/2015DE102014012887A1 Schraubenförmiger Rotor, Exzenterschneckenpumpe und Pumpenvorrichtung Helical rotor eccentric screw pump and pump device
03/05/2015DE102013109657A1 Impellerpumpe Impeller
03/04/2015EP2843232A1 Hydraulic rotating motor with pivotable control vanes
03/04/2015EP2841675A1 Downhole motor with concentric rotary drive system
03/03/2015USRE45397 Open-cycle internal combustion engine
03/03/2015US8967985 Metal disk stacked stator with circular rigid support rings
03/03/2015US8967948 Uniaxial eccentric screw pump
02/2015
02/28/2015CA2857349A1 Helical rotor,progressive cavity pump and pumping device
02/26/2015WO2015026850A1 Miniature high pressure pump and electrical hydraulic actuation system
02/26/2015WO2015026411A2 Hydraulic control unit having unitary sump and accumulator housing
02/26/2015WO2015026409A1 Hydraulic control unit having interface plate disposed between housing and pump
02/26/2015WO2015025635A1 Sliding member for pump and pump operation state detection system
02/26/2015WO2015025140A1 Distributor apparatus with a pair of intermeshing screw rotors
02/26/2015US20150056092 Self-Fixing Stator Housing
02/26/2015US20150056091 Scroll compressor
02/26/2015US20150056090 Variable capacity type vane pump
02/26/2015DE102014214878A1 Ölpumpe Oil pump
02/26/2015DE102013223899B3 Pumpvorrichtung Pumping device
02/26/2015DE102012210197B4 Elektrische Pumpe und Verfahren zur Herstellung der elektrischen Pumpe Electric pump and method of manufacturing the electric pump
02/24/2015US8961157 Vane pump
02/24/2015US8961148 Unified variable displacement oil pump and vacuum pump
02/24/2015US8960309 Oil well pump apparatus
02/19/2015WO2015022929A1 Trochoid pump with air discharge port
02/19/2015WO2015022715A1 Improved volumetric pump with progressive recesses
02/19/2015WO2015022714A1 Batching/delivering system comprising at least one remotely actuated volumetric batching pump
02/19/2015WO2015021496A1 A concentric rotary fluid machine
02/19/2015US20150050176 Cycloidal Pinwheel Pair with Uniform Contact and One-tooth Difference
02/19/2015US20150050174 Rotary Piston Pump With Optimised Inlets And Outlets
02/19/2015US20150050173 Variable displacement pump with double eccentric ring and displacement regulation method
02/18/2015EP2837827A1 Hydraulic device
02/17/2015US8956135 Screw compressor with asymmetric ports
02/17/2015US8956134 Fixed-vane positive displacement rotary devices
02/17/2015US8956133 Vehicular internal gear type oil pump
02/17/2015US8956131 Scroll compressor
02/12/2015WO2015021007A1 Vane pump assembly
02/12/2015WO2015019859A1 Fluid-pump inner rotor
02/12/2015WO2015018614A1 Coupling device for a metering pump
02/12/2015WO2015018390A2 System for pumping liquid media from a bore and method for installing a pump unit designed as a progressive cavity pump in a bore
02/12/2015US20150040608 Compressor and air conditioner including the same
02/12/2015DE102013108697A1 Verdrängerpumpe, insbesondere verstellbare flügelzellenpumpe Displacement, particularly adjustable wing cell pump
02/12/2015CA2859513A1 Pump system for gas dehydrator powered by thermal electric generator
02/11/2015EP2834521A1 Metering pump made of plastic
02/11/2015CN204152783U 一种轴承外置式双密封高粘度不锈钢齿轮泵 A bearing external double sealed stainless steel gear pump high viscosity
02/11/2015CN204152782U 油泵泵体安装结构 Pump oil pump mounting structure
02/11/2015CN104343681A 一种轴对称曲面旋转变容泵 One axially symmetric rotating surface displacement pump
02/11/2015CN104343680A 油泵 Pump
02/11/2015CN104343679A 油泵 Pump
02/11/2015CN104343678A 齿轮泵 Gear pumps
02/11/2015CN104343677A 不对称油槽摆线转子泵 Asymmetric sump pump gerotor
02/11/2015CN104343676A 轴向柔度绕转板式涡旋件及包括该涡旋件的涡旋泵 Axial compliance plate orbiting scroll member and includes the scroll, scroll pump
02/11/2015CN103061822B 采用闸阀结构的星旋式转动装置 Gate structure using rotating device rotating star
02/10/2015US8951027 Vane cell machine
02/10/2015US8950169 Rotary expansible chamber devices having adjustable working-fluid ports, and systems incorporating the same
02/10/2015CA2762087C Variable capacity vane pump with dual control chambers
02/05/2015WO2015017358A1 Improved stator assembly for progressive cavity pumping systems
02/05/2015WO2015015426A1 A hydraulic circuit associated with an internal combustion engine
02/05/2015WO2015015222A1 A rotary engine
02/05/2015US20150037194 Oil pump
02/05/2015US20150037193 Oil pump
02/05/2015US20150037192 Scroll compressor with pressurized oil balance piston
02/05/2015US20150037188 Vane pump assembly
02/05/2015US20150037181 Pump arrangement
02/05/2015DE102006042190B4 Rotoreinrichtung einer Pumpe Rotor means of a pump
02/04/2015EP2833000A2 Internal gear oil pump
02/04/2015EP2831488A1 Oil pump, engine cover and engine comprising the same
02/04/2015EP2831421A2 Pin joint for an eccentric screw pump
02/04/2015EP2831420A1 Internal-gear pump
02/04/2015CN204140385U 一种改进的叶片式液压机械 An improved vane-type hydraulic machinery
02/04/2015CN204140384U 一种直联旋片式真空泵 A direct-rotary vane vacuum pump
02/04/2015CN204140383U 叶片式变量液压泵 Variable vane pump
02/04/2015CN204140382U 一种可变连接方式的小型齿轮计量泵 A variable connection of small gear metering pumps
02/04/2015CN204140381U 一种齿轮泵 A GEAR pump
02/04/2015CN104334881A 确定旋转式容积泵中的泵流量的方法 Determining rotary displacement pump in the pump flow rate method
02/04/2015CN104334880A 具有填充件的内齿轮泵 Having an internal gear pump of the filling piece
02/04/2015CN104329251A 一种微型超低温磁力驱动齿轮泵 A miniature ultra-low temperature magnetic drive gear pump
02/04/2015CN104329250A 一种低流量脉动双向齿轮泵 A low flow pulsation bidirectional gear pump
02/03/2015US8944793 Flow and pressure ripple reduction with advance dual gear and bearing face cut
02/03/2015US8944792 Metering gear pump or segment, and metering gear pump assembly comprising a plurality of metering gear pumps or segments
02/03/2015US8944791 Compressor assembly having oil separation feature
02/03/2015US8944790 Compressor with cyclone and internal oil reservoir
02/03/2015US8944789 Enhanced elastomeric stator insert via reinforcing agent distribution and orientation
02/03/2015US8944788 Net-displacement control of fluid device
02/03/2015US8944783 Electric progressive cavity pump
02/03/2015US8944779 Rotary lobe pump with angular gear
01/2015
01/29/2015WO2015011740A1 Electrically operated pump
01/29/2015WO2015011368A1 Pumping block device having an integrated bypass circuit
01/29/2015WO2015010700A1 Fluid system
01/29/2015US20150030488 Gear pump
01/29/2015US20150030486 Variable capacity vane pump
01/29/2015US20150030485 Variable displacement rotary pump and displacement regulation method
01/29/2015US20150027686 Crude Oil Lifting System and Method Utilizing Vane Pump for Conveying Fluid
01/28/2015EP2829731A1 Gear pump
01/28/2015EP2828526A1 Variable displacement pump with double eccentric ring and displacement regulation method
01/28/2015EP2828525A1 Variable displacement rotary pump and displacement regulation method
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