Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; Rotary-piston, or oscillating-piston, positive-displacement pumps › F04C 2 - Rotary-piston machines or pumps
Patents for F04C 2 - Rotary-piston machines or pumps (14,296)
10/2012
10/24/2012CN102748190A Speed-adjustable positive displacement pump turbine
10/23/2012US8292605 Rotary fluid device with multi-level phase shift control
10/23/2012CA2611761C Gear pump with improved inlet port
10/17/2012EP2511530A2 Gear pump
10/17/2012EP2510239A2 External gear pump
10/17/2012EP2510235A1 Pump arrangement
10/17/2012CN202493428U Single-cavity vane pump with combined compensation of leaf spring and cylinder spring
10/17/2012CN202493427U Slurry delivery pump
10/17/2012CN202493426U Novel three-screw pump molded line
10/17/2012CN202493425U Multistage inner gearing gear pump
10/17/2012CN101975094B Liquid pump of screw expander
10/16/2012US8287258 Positive displacement pump with impeller and method of manufacturing
10/16/2012US8287257 Oldham coupling
10/16/2012US8286609 Rotary energy converter with retractable barrier
10/16/2012US8286608 Sealing system for an oscillating-piston engine
10/11/2012US20120258004 Scroll compressor
10/11/2012US20120258001 Progressing Cavity Pump/Motor
10/11/2012US20120255445 Double vacuum pump apparatus, gas purification system provided with double vacuum pump apparatus, and exhaust gas vibration suppressing device in double vacuum pump apparatus
10/11/2012DE112010004392T5 Statoreinsätze, Verfahren für deren Herstellung und Bohrlochmotoren, die sie verwenden Statoreinsätze, processes for their preparation and downhole motors that use them
10/11/2012DE102011016309A1 Internal gear or annular gear pump i.e. gerotor pump, has semi-cylindrical chambers whose bottom portions are arranged in suction and pressure regions and separation region, and connected with suction and pressure sides, respectively
10/11/2012DE102011006842A1 Innenzahnradpumpe Internal gear pump
10/10/2012EP2508709A2 Pump mounting structure
10/10/2012CN202483874U Dynamic balance structure of single-head screw rotor
10/10/2012CN202483873U Vacuumizing device for drying riboflavin sodium phosphate
10/10/2012CN202483865U Screw stripping pump
10/10/2012CN102725530A Stator seal structure for single-shaft eccentric screw pump
10/10/2012CN102720671A High-pressure paste delivery method and high-pressure paste delivery pump
10/10/2012CN102720630A Multispeed roller motor with double rotors in casing and rotating cam-link
10/10/2012CN102032174B Rotary piston pump
10/10/2012CN101517235B Gear pump with reduced pressure impulses on the conveyor side
10/10/2012CN101382135B Pumping apparatus
10/09/2012US8282371 Screw pump
10/09/2012US8282370 Stepped scroll compressor with changing step mesh gaps
10/09/2012US8281676 Transmission utilizing hypocycloid motion
10/09/2012CA2524413C Gear pump
10/04/2012WO2012134324A1 Hydraulic machine
10/04/2012WO2011129776A3 Gear pump with continuous variable output flow rate
10/04/2012US20120251374 Multiple rotor fluid transfer engine
10/04/2012US20120251371 Gear pump
10/04/2012US20120251370 Internal gear pump
10/04/2012US20120251368 Pump
10/04/2012DE102012204191A1 Elektrische Ölpumpe Electric oil pump
10/04/2012DE102011017374A1 Internal gear pump i.e. gerotor pump, for conveying fluid, has channel extending from pressure area to intermediate area between disk and pressure section and formed at housing for conveying fluid from pressure area to intermediate area
10/03/2012EP2505335A2 Extrusion device for producing a strip-shaped profile or tube made of plastic or rubber mass
10/03/2012EP2504579A2 Vane pump
10/03/2012EP2504578A2 Screw pump having an integrated pressure limiting valve
10/03/2012CN202468319U Pump housing of silicon steel coating liquid conveying pump
10/03/2012CN202468313U Rotor pump and rotary machine comprising rotor pump
10/03/2012CN202468308U Three-section pressure feedback variable displacement vane pump with variable high-speed pressure-limiting middle section
10/03/2012CN202468307U Sliding vane pump
10/03/2012CN202468306U Flow controlling vane pump
10/03/2012CN202468305U High-pressure pump
10/03/2012CN202468304U Voltage limiting type variable vane pump
10/03/2012CN202468303U Single-cavity blade pump capable of obtaining combined compensation through flat springs and air bags
10/03/2012CN202468302U Extra-high pressure gear oil pump
10/03/2012CN202468301U Reversible gear pump
10/03/2012CN202468300U Steering gear pump
10/03/2012CN202468299U Water pump
10/03/2012CN202468298U Yeast extract paste transporter
10/03/2012CN202468297U Double-rotor vane pump
10/03/2012CN202468296U Rotary gear pump
10/03/2012CN202468295U Inner gear pump suitable for frontwards and backwards running
10/03/2012CN202467779U Crude oil lifting system
10/03/2012CN102713297A Gear feed pump comprising a driving shaft, a driving toothed wheel, and a driven toothed wheel
10/03/2012CN102713296A Hydraulic control device
10/03/2012CN102713127A Stator inserts, methods of fabricating the same, and downhole motors incorporating the same
10/03/2012CN102713126A Stators for downhole motors, methods for fabricating the same, and downhole motors incorporating the same
10/03/2012CN102705231A Double-rotation-direction steering pump for automobile emergency steering system
10/03/2012CN102705230A Gear pump
10/03/2012CN102705229A Pressure regulating gear pump
10/03/2012CN102705228A Double-support rotor pump with parallel sealing surfaces
10/03/2012CN102705227A Multi-tooth difference internal gear pump
10/03/2012CN102094810B Worm gear pump with worm wheel gear cavity as working space
10/03/2012CN102022318B Method for ensuring gear pump gap by matching jump
10/03/2012CN101809257B SCR system and method for the purging thereof
10/03/2012CN101440805B Oil pump resonator
10/03/2012CN101310111B Hot melt adhesive metering pump assembly with integral reservoir tank
10/02/2012US8277208 Split discharge vane pump and fluid metering system therefor
10/02/2012US8277207 Oil supply method of two-stage screw compressor, two-stage screw compressor applying the method, and method of operating refrigerating machine having the compressor
10/02/2012CA2550313C Oil pump and automatic transmission including the same
10/01/2012CA2772901A1 Pump controller with multiphase measurement
09/2012
09/27/2012WO2012128986A2 Displaying a barcode on a display of an infusion pump
09/27/2012WO2012128640A1 A rolling self-sealing vane for a rotary pump or engine.
09/27/2012WO2012094534A3 Percutaneous heart pump
09/27/2012DE102011084663A1 Pumpenvorrichtung Pump device
09/26/2012EP2503151A1 Helical gear pump
09/26/2012CN202451422U Screw pump
09/26/2012CN102695880A formed seal ring for a liquid gas separating element
09/26/2012CN102695879A Screw spindle machine and method of manufacturing the same
09/26/2012CN102695844A Stators for downwhole motors, methods for fabricating the same, and downhole motors incorporating the same
09/26/2012CN102691656A 泵装置 Pump device
09/26/2012CN102691655A Shaft rotation double-stator cam rotor multi-output pump
09/20/2012WO2012125543A1 Plastic pump housing and manufacture thereof
09/20/2012WO2012056470A4 Rotary three dimensional variable volume machine
09/20/2012WO2011104163A3 Oscillating slide machine
09/20/2012US20120237384 Fretting-corrosion-prevention oscillating vane type pump actuator
09/20/2012DE112011100065T5 Ölpumpe Oil pump
09/20/2012DE102010011994A1 Vane-type machine for use as e.g. pump, has hollow cylindrical rotor provided with outer and inner base slots, and hollow round-shaped inner cylinder exhibiting circular cross-section and positioned in rotatable manner
09/19/2012EP2500568A2 Downhole backspin retarder for progresssive cavity pump
09/19/2012EP2499371A2 Positive displacement pump
1 ... 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 ... 143