F04C 2 - Rotary-piston machines or pumps

Patents for F04C 2 - Rotary-piston machines or pumps (14,296)
03/2011
03/31/2011	US20110076172 Scroll pump with isolation barrier
03/31/2011	US20110076165 Drive device
03/31/2011	DE102009045030A1 Gear pump for injection system, particularly for motor vehicle, has electric motor for supplying fluid, gear wheel with cogs and working room
03/31/2011	DE102006034758B4 Rotorpumpe Rotor pump
03/30/2011	CN201779430U Oil pump
03/30/2011	CN201779012U High-performance geared oil pump
03/30/2011	CN101994691A Gear pump liquid supercharging equipment, and production process and application thereof
03/30/2011	CN101994690A Gear pump for viscous media
03/30/2011	CN101994689A Hydraulically-driven deep well double-screw pump
03/24/2011	WO2011033426A2 Enclosed positive displacement mechanism, particularly for fluid machinery, fluid machinery comprising the mechanism and rotating unit for the mechanism
03/24/2011	WO2011032766A2 Gear pump comprising two rotating pump elements
03/24/2011	WO2010126650A3 Method and apparatus for managing fluid flow within a screw pump system
03/24/2011	US20110070111 Stator/rotor assemblies having enhanced performance
03/24/2011	US20110067434 Hermetic type compressor and refrigeration cycle apparatus
03/24/2011	DE10233582B4 Flügelzellenpumpe zur Förderung eines Fluids Vane pump for delivering a fluid
03/24/2011	DE102009029522A1 Zahnradpumpe mit zwei rotierenden Pumpelementen Gear pump with two rotating pumping elements
03/23/2011	CN201772238U Lubricating oil pump assembly
03/23/2011	CN201771758U Oil filter coupling magnetic drive pump
03/23/2011	CN201771757U Closed type direct current gear pump
03/23/2011	CN201771756U 同步齿轮泵 Synchronous gear pump
03/23/2011	CN201771755U Gear pump for food processing
03/23/2011	CN101988496A Vane pump for fuel injection pump device and fuel injection pump device
03/23/2011	CN101988495A Steering pump of automobile power steering system
03/23/2011	CN101490421B Rotor compressor
03/23/2011	CN101147001B Vane cell pump
03/22/2011	US7909593 Power transfer device with torque limited pump
03/22/2011	US7909591 Eccentric screw pump equipped with erosion-resistant rotor
03/22/2011	US7909590 Reciprocating component-free kinematic motion apparatus for transforming pressure variations of a fluid operating in cyclically variable volume toroidal chambers into a mechanical work on a rotary axis and engine including said apparatus
03/22/2011	US7909026 Servo-actuated supercharger operating mechanism
03/22/2011	US7909014 Oscillating piston machine
03/22/2011	US7909013 Hybrid cycle rotary engine
03/22/2011	CA2604998C Active intake pressure control of downhole pump assemblies
03/22/2011	CA2532756C Multiple elastomer layer progressing cavity stators
03/17/2011	WO2011031766A2 Optimized discharge port for scroll compressor with tip seals
03/17/2011	WO2011030849A1 Electric pump unit
03/17/2011	WO2011029847A2 Rotary piston pump
03/17/2011	WO2011029657A2 Gear feed pump comprising a driving shaft, a driving toothed wheel, and a driven toothed wheel
03/17/2011	WO2010138821A3 Compressor having capacity modulation or fluid injection systems
03/17/2011	WO2010131103A3 Single vane pump
03/17/2011	US20110062773 Pump assembly
03/17/2011	DE202010016196U1 Verdrehsicherung Torsion
03/17/2011	DE102009049377A1 Rotary pump or compressor has two counter-rotating pumps and synchronously rotating bodies, where inner form of pump housing has eight-shaped structure
03/16/2011	EP2295802A2 Hydraulic gear machine
03/16/2011	EP2295801A2 Screw pump rotor
03/16/2011	EP2295800A2 Eccentric screw pump
03/16/2011	EP2035710B1 Pump
03/16/2011	CN201763601U Novel steering pump of truck
03/16/2011	CN201763600U Gear pump or motor
03/16/2011	CN201763599U High-pressure gear pump
03/16/2011	CN101985932A Steering pump device of double-acting variable vane
03/16/2011	CN101985931A Track positioning slip sheet type non-blockage pump
03/16/2011	CN101985930A Rotor type deep submersible pump
03/16/2011	CN101985929A Jacket positioned sliding-vane non-clogging pump
03/16/2011	CN101985928A High efficiency energy-saving gear pump and manufacturing method thereof
03/16/2011	CN101490454B Shock valve for hydraulic device
03/15/2011	CA2443367C Variable displacement pump having a rotating cam ring
03/10/2011	WO2011028639A1 Motor/pump with spiral wound stator tube
03/10/2011	WO2011028113A2 Fluid pump
03/10/2011	WO2011026453A2 Vane cell pump
03/10/2011	WO2010075834A3 Locking semirotary pump
03/10/2011	WO2010057448A3 Displacement sump pump
03/10/2011	US20110058973 Motor-driven compressor
03/10/2011	US20110058970 Rotary compressor and method
03/10/2011	DE102009029293A1 Zahnradförderpumpe mit einer Antriebswelle, einem Antriebszahnrad und einem anzutreibenden Zahnrad Gear pump with a drive shaft, a drive gear and a driven gear
03/10/2011	CA2772854A1 Motor/pump with spiral wound stator tube
03/09/2011	EP2222938B1 Bearing unit of a fluid pump
03/09/2011	CN201757057U High-efficiency energy-saving oil pump
03/09/2011	CN101984257A Balanced type crescent seal gear pump
03/03/2011	WO2011022835A1 Fluid turbine
03/03/2011	US20110052436 Rotary lobe pump with angular gear
03/03/2011	US20110048384 Bearing arrangement for a pump
03/03/2011	DE102009037993A1 Exzenterschneckenpumpe Cavity Pump
03/03/2011	DE102009017452B4 Ölförderpumpe Oil pump
03/02/2011	EP2179181B1 Gear pump and method of delivering fluid using such a pump
03/02/2011	CN201753685U Rotary-piston pump rotor
03/02/2011	CN201753683U Rotary-piston pump
03/02/2011	CN201753682U Acetate-fiber spinning metering pump
03/01/2011	US7896630 Rotary device with reciprocating vanes and seals therefor
03/01/2011	US7896628 Downhole motor seal and method
03/01/2011	CA2528815C Thermal expansion chambers for airtight containers
02/2011
02/28/2011	CA2677006A1 Hydraulic generator (liquid flow generator)
02/27/2011	CA2713639A1 Plate pump assembly for use with a subsurface pump
02/24/2011	WO2011022557A2 Magnetic drive pump assembly with integrated motor
02/24/2011	WO2010138825A3 Compressor having piston assembly
02/24/2011	US20110044835 Compressor
02/23/2011	EP2286088A2 Pump
02/23/2011	EP2201250B1 Pump insert
02/23/2011	CN101205926B Oil pump device of enclosed type compressor
02/17/2011	WO2011017817A1 Oldham pump
02/17/2011	US20110038745 Balanced Pressure, Variable Displacement, Dual Lobe, Single Ring, Vane Pump
02/17/2011	US20110038744 System for construction of pumps, compressors and rotary engine composed of two rotors with one, two or more displacer's each, that move themselves in the same direction at speeds that are varying and alternativly opposite each other
02/17/2011	US20110036560 Long-lasting hydraulic seals for smart shuttles, for coiled tubing injectors, and for pipeline pigs
02/17/2011	DE202010013060U1 Wasserschneckenanlage Water snails system
02/17/2011	DE102009037199A1 Hydraulische Zahnradmaschine Hydraulic gear machine
02/17/2011	DE102009028449A1 Toothed wheel pump, particularly fuel pump, has two toothed wheels, which are arranged and combed together in housing, where fuel of suction area is conveyed to pressure area
02/17/2011	DE102009028442A1 Toothed wheel pump for use in common-rail-fuel injection system for combustion engine, has suction side and pressure side, where pressure-sided reverse flow channel manufactures hydraulic connection between pressure side and conveyor spaces
02/17/2011	DE102009028439A1 Pump arrangement, particularly for fuel injection systems of air-compressing, self-igniting internal combustion engines, has sliding vane pump with outer ring and impeller which is arranged in outer ring
02/17/2011	DE102005033094B4 Flügelzellenpumpe Vane pump
02/16/2011	EP2283990A1 Gear pump for viscous media and method
02/16/2011	EP2283235A2 Drill motor assembly

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