F04C 2 - Rotary-piston machines or pumps

Patents for F04C 2 - Rotary-piston machines or pumps (14,296)
11/2011
11/02/2011	CN202023735U Cutting type double-screw pump
11/02/2011	CN202023734U Fluidic water hyacinth
11/02/2011	CN101270746B Oil-leading stripping pump
11/01/2011	US8047824 Vane machine with stationary and rotating cylinder parts
11/01/2011	US8047822 Continuously variable displacement vane pump and system
11/01/2011	CA2503914C Shared slot vane pump
10/2011
10/30/2011	CA2738500A1 A continuous rod pump drive system
10/27/2011	WO2011131598A2 Vane cell pump
10/27/2011	WO2010145862A3 Fuel pump with an overflow valve and a bypass valve
10/27/2011	DE102010028061A1 Flügelzellenpumpe Vane pump
10/26/2011	EP2379892A1 Fully submerged integrated electric oil pump
10/26/2011	EP2379891A2 Internal gear pump
10/26/2011	EP2379890A2 Pump unit
10/26/2011	CN202017627U Double-oil-inlet big-flow-rate hydraulic gear wheel pump
10/26/2011	CN202017626U High-flow speed-variable gear pump with double oil outlets
10/26/2011	CN202017625U High-pressure big-flow-rate gear wheel pump
10/26/2011	CN202017624U Wear-resistant gear pump for feeding
10/26/2011	CN102227560A Tooth profile for rotors of positive displacement external gear pumps
10/25/2011	US8043079 Hermetic compressor and refrigeration cycle device having the same
10/25/2011	US8043078 Compressor sealing arrangement
10/20/2011	WO2011129776A2 Gear pump with continuous variable output flow rate
10/20/2011	WO2011128707A2 Concentric rotational vane pump
10/20/2011	WO2011128218A2 Gear pump
10/20/2011	WO2011128164A1 Pump assembly
10/20/2011	DE102010027842A1 Pumpenanordnung Pump assembly
10/20/2011	DE102010027835A1 Zahnradpumpe Gear pump
10/20/2011	CA2796148A1 Gear pump with continuous variable output flow rate
10/19/2011	EP1982073B1 Hydrostatic energy generation unit
10/19/2011	CN202012478U A hand pump
10/19/2011	CN102224344A 滑片泵 Vane pumps
10/19/2011	CN102220976A Fluid conveying mechanism and compression device using same
10/19/2011	CN102220975A Spiral rotor metering pump
10/19/2011	CN102220974A Double-screw pump without bearing
10/19/2011	CN101484703B Moineau type pump
10/18/2011	US8038423 Electric pump with relief valve
10/18/2011	US8038422 Gear pump with a valve arranged between a suction side and a pressure side of the gear pump
10/18/2011	US8038420 Variable displacement vane pump
10/18/2011	US8038417 Electric pump unit and electric oil pump apparatus
10/18/2011	US8037670 Bi-directional converter between pressure and rotational force
10/13/2011	WO2011126881A2 Undercut stator for a positive displacement motor
10/13/2011	WO2011124213A2 Rotary piston pump and method for operating a rotary piston pump
10/13/2011	WO2011124212A2 Contact element for rotary piston pump
10/13/2011	WO2011069713A3 External gear pump
10/13/2011	WO2011032766A3 Gear pump comprising two rotating pump elements
10/13/2011	US20110250086 Frame rotated hydraulic motor with improved parking brake
10/13/2011	DE102010024222A1 Controllable hydraulic oscillating slide machine e.g. oil pump, for use in motor vehicle, has slide drivers coupled with piston, where pressure level in chambers is adjusted different than pressure level in other chambers
10/13/2011	DE102010014248A1 Kontaktelemente für Drehkolbenpumpen Contact elements for rotary pumps
10/13/2011	DE102010014218A1 Drehkolbenpumpe und Verfahren zum Betreiben einer Drehkolbenpumpe Rotary piston pump and method for operating a rotary piston pump
10/13/2011	CA2794501A1 Undercut stator for a positive displacement motor
10/12/2011	CN202007779U High-pressure gear pump provided with rectangular oil inlet
10/12/2011	CN202007778U High-pressure gear pump with intermediate-pressure bearing lubricating function
10/12/2011	CN202007777U High pressure gear pump without fixed side plates
10/12/2011	CN102213216A High-pressure gear pump having rectangular oil outlet
10/12/2011	CN101523053B Three-throw gear pump
10/12/2011	CN101139989B Pump
10/11/2011	US8033802 Stator casing for eccentric worm pumps
10/11/2011	US8033264 Rotary engine
10/11/2011	CA2665889C High-speed gear pump
10/11/2011	CA2595181C Controlled thickness resilient material lined stator and method of forming
10/06/2011	WO2011122413A1 Branched duct construct, and uniaxial eccentric screw pump system
10/06/2011	WO2011122146A1 Compressor
10/06/2011	WO2011120512A2 Method for removing an eccentric worm gear drive of a crude oil delivery pump and crude oil delivery pump
10/06/2011	WO2011120412A1 Shaft-driven double-stator multi-speed motor with equal-width curves
10/06/2011	WO2010108959A3 Rotary pump
10/05/2011	CN202001297U Two-angle rotary type compressor
10/05/2011	CN202001296U Gear oil pump
10/05/2011	CN202001295U Shield-type three-screw pump
10/05/2011	CN202001294U Non-magnetic screw motor with small diameter used in coal mine
10/05/2011	CN202001293U Linear conjugated inner meshing gear pump
10/05/2011	CN102207085A Rotor-type internal-compression oil-gas mixed transport pump unit
10/05/2011	CN102207084A Tricuspid cycloidal pump
10/04/2011	US8029255 Lubricating oil circulating device for compressor
10/04/2011	US8029254 Scroll-type fluid machine having a back-pressure chamber
09/2011
09/29/2011	WO2011119464A2 Rotary infusion pumps
09/29/2011	WO2011117154A2 Gear pump
09/29/2011	DE102010012653A1 Zahnradpumpe Gear pump
09/29/2011	CA2793661A1 Rotary infusion pumps
09/28/2011	EP2367701A1 Device for pressurising a fluid, to be directly mounted on a power takeoff
09/28/2011	CN201991771U 偏心式双转子泵的外驱动传动结构 External drive transmission structure Eccentric double rotor pump
09/28/2011	CN201991770U 一种偏心式双转子泵 One kind of eccentric double rotor pump
09/28/2011	CN201991769U 叶片泵 Vane pump
09/28/2011	CN201991768U 一种液压齿轮泵 A hydraulic gear pump
09/28/2011	CN201991767U Gear pump for feeding
09/28/2011	CN201991766U 一种三螺杆输油泵 A three-screw pump
09/28/2011	CN102203422A Fully submerged integrated electric oil pump
09/28/2011	CN102200125A Compensation sealing three-space rotor pump of annular air bag
09/28/2011	CN101586523B Noncircular planetary gear hydraulic motor
09/27/2011	US8025492 Scroll machine
09/22/2011	WO2011113095A1 A twin rotor pump, motor and/or drive assembly
09/21/2011	EP2366902A1 Pumping unit for feeding oil under pressure to a user
09/21/2011	EP2366414A2 Dual chamber and gear pump assembly for a high pressure delivery system
09/21/2011	EP2366069A2 Displacement sump pump
09/21/2011	CN201982292U 直联一体齿轮泵 Direct one gear pump
09/21/2011	CN201982291U 三螺杆双密封保温泵 Three screw pump double sealed insulation
09/21/2011	CN102192143A Fluid pump with inclined rotary pistons
09/21/2011	CN102192142A Annular air bag compensation sealing four-space rotor pump
09/21/2011	CN102192141A Outer ring driven gerotor pump
09/15/2011	WO2011110475A2 Screw-type compressor
09/15/2011	WO2010146087A3 A variable-displacement lubricant pump
09/15/2011	WO2010119141A4 Control of the vanes of a vane machine

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