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)
09/2012
09/19/2012CN202441595U Gear-pump floating-shaft-sleeve assembly
09/19/2012CN202441592U Silicon steel coating liquid conveying pump
09/19/2012CN202441591U Single-cavity vane pump with combination of excircle spoke springs and small springs
09/19/2012CN202441590U High-pressure gear pump
09/19/2012CN102678545A Anti-friction vane and high-pressure anti-friction column pin type vane pump
09/19/2012CN102678544A Multi-roller compressor
09/19/2012CN102678543A Gear pump and mobile unit for adjusting conveying capacity
09/19/2012CN102678542A Screw pump
09/19/2012CN102678541A Fuel delivery pump with floated cycloid rotor
09/19/2012CN102678289A Spiraster-type rotation device, engine, pneumatic motor, and compressor
09/19/2012CN102678182A Star-spinning type rotation device with double sun wheels, engine and fluid machine
09/19/2012CN102671402A Built-in material liquid conveying pump under negative working condition
09/13/2012WO2012122321A2 Bearing / gearing section for a pdm rotor / stator
09/13/2012WO2012120095A2 A hydraulic device
09/13/2012WO2012120094A2 A gerotor pump, a gerotor motor and a gerotor transmission system
09/13/2012WO2011069754A3 Eccentric screw pump comprising an integrated remixer
09/13/2012US20120230856 Helical gear pump
09/13/2012DE102011013756A1 Gear pump, particularly oil pump for internal combustion engine, has control valve, which is additionally connected with outlet over throttle in position of piston for connecting control fluid in fluid conducting manner
09/12/2012EP2497952A2 Electric pump unit
09/12/2012EP2497951A1 Georotor hydraulic device with capacity control valve provided within the shaft
09/12/2012EP2497950A1 Georotor pump with capacity control valve provided rotatable within the shaft.
09/12/2012CN202431516U High-pressure gear pump
09/12/2012CN202431515U Gap compensation structure for internal gear pump
09/12/2012CN102667164A Optimized discharge port for scroll compressor with tip seals
09/12/2012CN102667161A Vane pump
09/12/2012CN102667160A Positive displacement pump
09/12/2012CN102667159A A geared hydraulic machine
09/12/2012CN102667061A Internal combustion engine and supercharger
09/12/2012CN102661222A External horizontal-type fuel pump oil outlet tray, manufacturing process and impeller matched with oil outlet tray
09/11/2012US8262377 Injection molded scroll form
09/11/2012CA2711206C Stuffing box for progressing cavity pump drive
09/06/2012DE102011004970A1 Flügelzellenpumpe Vane pump
09/05/2012EP2495442A2 Internal gear pump
09/05/2012EP2494208A2 Rotary machine with swinging pistons
09/05/2012CN202418062U Hydraulic system
09/05/2012CN202417937U Power steering pump
09/05/2012CN202417936U Combined compensating single-cavity vane pump with pagoda springs
09/05/2012CN202417935U Single-cavity vane pump compensated by internal pressure combination of leaf springs
09/05/2012CN202417934U Pressure-adjusting gear pump
09/05/2012CN202417933U Hydraulic gear pump
09/05/2012CN202417932U Screw pump
09/05/2012CN202417931U Double-rotating-direction gear pump
09/05/2012CN202417930U Pump with centering spiral drum
09/05/2012CN202417929U SOY-type whirlpool pump
09/05/2012CN102656366A Oil pump
09/05/2012CN102654125A Positive displacement fluid pump
09/05/2012CN101881271B Input end assembly of mechanical supercharger
09/05/2012CN101821510B Internal gear pump rotor, and internal gear pump using the rotor
09/04/2012US8257072 Vane compressor with improved vanes
09/04/2012US8257070 Seal apparatus of gear pump
09/04/2012US8257068 Cooling system for gerotor motor
09/04/2012US8257057 Variable displacement vane pump
09/04/2012US8256403 Engine and supercharger
08/2012
08/30/2012WO2012113768A1 Method for producing the tooth shape of the inner and outer ring of an annular gear machine and toothed ring produced by means of said method
08/30/2012WO2012113437A1 A variable displacement lubricant pump with a pressure control valve having a preload control arrangement
08/30/2012US20120219449 Bearing face geometry for gear pump
08/30/2012US20120219447 Coupling shaft for gear pump
08/30/2012US20120219446 Input shaft assembly for gear pump
08/30/2012DE102011011404B4 Zweiflutige Schraubspindelmaschine Double-flow Schraubspindelmaschine
08/30/2012DE102011004858A1 Drehschieber Rotary vane
08/29/2012CN202402284U External gearing multi-functional gear pump
08/29/2012CN202402283U Internal-engagement multi-action gear pump
08/29/2012CN102652225A Gear pump
08/29/2012CN102650285A Bearing face geometry for gear pump
08/29/2012CN102650281A Dual-gear oil pump
08/29/2012CN101218434B Vacuum pump for vehicle motors and one-way valve for said vacuum pump
08/28/2012US8251683 Variable capacity rotary compressor
08/28/2012CA2639450C System and method for controlling a progressing cavity well pump
08/23/2012WO2012112378A2 Blood flow assist systems
08/23/2012WO2012111863A1 Apparatus for fixing a dust seal of a scroll compressor
08/23/2012US20120213657 Fluid pump mechanical seal
08/23/2012US20120213654 Adjustable vane cell pump with a slide comprising recesses
08/23/2012DE112010004390T5 Statoren für Bohrlochmotoren, Verfahren für ihre Herstellung und Bohrlochmotoren, die sie enthalten Stators for downhole motors, processes for their preparation and downhole motors that they contain
08/22/2012EP2488756A2 Screw spindle machine and method of manufacturing the same
08/22/2012EP2488755A2 Double internal gear pump
08/22/2012CN202391731U Floating side plate of high-pressure gear pump
08/22/2012CN202391728U Small-spring annular air bag combined compensation dual-cavity blade pump
08/22/2012CN202391727U Double-chamber vane pump with combined compensation of large cylinder springs and small cylinder springs
08/22/2012CN202391726U Dual-cavity vane pump compensated by combination of leaf spring and annular air bag
08/22/2012CN202391725U Assembly compensation double-cavity vane pump for cone-shaped spring of small spring
08/22/2012CN202391724U Cylindrical spring compensation gear pump
08/22/2012CN202391723U Air sag ring compensation gear pump
08/22/2012CN202391722U Gear pump
08/22/2012CN202391721U Powder metallurgy gear pump
08/22/2012CN202389257U Rotary-valve type dumping gear pump
08/22/2012CN102648350A External Gear Pump
08/22/2012CN102644588A Fluid pressure and mechanical energy converter
08/22/2012CN102032176B Large-flow combined linear screw pump
08/22/2012CN101871450B Small-flow high-lift radial piston pump
08/22/2012CN101835986B Internal gear pump for a braking system
08/21/2012US8246333 Rotor profile for a screw compressor
08/16/2012WO2012109302A2 Lubricant control valve for a screw compressor
08/16/2012WO2012107197A2 Displacement pump
08/16/2012WO2012056470A3 Rotary three dimensional variable volume machine
08/16/2012DE102011011404A1 Zweiflutige Schraubspindelmaschine Double-flow Schraubspindelmaschine
08/16/2012CA2827100A1 Lubricant control valve for a screw compressor
08/15/2012EP2487368A2 Thermally efficient multiple stage gear pump
08/15/2012EP2486280A2 Vane pump
08/15/2012CN202381326U Flat spring and excircle spoke spring combined compensating double-cavity vane pump
08/15/2012CN202381325U Gear pump with cover for high-pressure body
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