| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
|---|
| 06/04/2013 | US8454334 Lubricant control valve for a screw compressor |
| 06/04/2013 | US8454333 Rotary fluid machine having outer and inner cylinder chambers with different heights |
| 06/04/2013 | US8454332 Method of assembling a refrigerating compressor |
| 05/30/2013 | WO2013077400A1 Pump |
| 05/30/2013 | WO2013077398A1 Pump device |
| 05/30/2013 | WO2013075946A1 Fuel delivery system for a vehicle |
| 05/30/2013 | WO2013075554A1 Cycloidal pinwheel pair with uniform contact and one tooth difference |
| 05/30/2013 | WO2012084437A3 Axial disc and gear pump with axial disc |
| 05/30/2013 | WO2011056304A3 Pump system |
| 05/30/2013 | US20130136644 Oil pump for vehicle |
| 05/29/2013 | CN202954968U Axially symmetrical curved surface rotary capacity changing pump |
| 05/29/2013 | CN202954967U Gear pump of transmitting firefighting foam |
| 05/29/2013 | CN101535633B Long life telescoping gear pumps and motors |
| 05/28/2013 | US8449277 Vane pump having a passage area ratio between an oil supply passage area and a gas passage area |
| 05/28/2013 | US8449276 Variable-speed scroll-type refrigeration compressor |
| 05/28/2013 | US8449275 Rotor drive mechanism, eccentric shaft sealing structure, and pump apparatus |
| 05/24/2013 | CA2796539A1 Multi-cluster gear device |
| 05/23/2013 | WO2013074865A1 Positive displacement motor with radially constrained rotor catch |
| 05/23/2013 | WO2013073982A1 Diametric positive-displacement machine (variants) |
| 05/23/2013 | US20130129548 Two-stage medium-pressure screw-type air compressor set |
| 05/23/2013 | CA2855724A1 Positive displacement motor with radially constrained rotor catch |
| 05/22/2013 | EP2594796A2 Bi-directional pump |
| 05/22/2013 | CN202946378U Shock-resistant and low-leakage gear pump cover structure |
| 05/22/2013 | CN202946377U 油泵转子 Oil pump rotor |
| 05/22/2013 | CN202946373U Horizontal high-pressure double-screw pump |
| 05/22/2013 | CN202946372U 齿轮泵 Gear pumps |
| 05/22/2013 | CN202946371U Internal gear pump |
| 05/22/2013 | CN103119301A Rotary piston pump and method for operating a rotary piston pump |
| 05/22/2013 | CN103114994A Vane-type hydraulic machine |
| 05/22/2013 | CN103114993A Step blade type hydraulic machinery |
| 05/22/2013 | CN103114992A High-efficiency gear pump |
| 05/22/2013 | CN103114991A Helical gear pump with large spiral angle, small headspace and high parameter |
| 05/22/2013 | CN102213216B High-pressure gear pump having rectangular oil outlet |
| 05/21/2013 | US8444406 Gear pump with reduced pressure pulsations on the pumping side |
| 05/21/2013 | US8444405 Overmolded rotor |
| 05/21/2013 | DE202013102079U1 Zahnradmaschine mit formschlüssiger Axialsicherung einer Lagerbuchse einer Wellenlagerung Gear machine with positive axial securing a bearing bush of a shaft bearing |
| 05/17/2013 | DE202013004219U1 Stator für eine Förderpumpe Stator for a booster pump |
| 05/16/2013 | WO2013069144A1 Internal-gear-type oil pump for vehicle |
| 05/16/2013 | WO2013068142A1 Valve device for a hydraulic circuit, and oil-pump regulating arrangement |
| 05/16/2013 | WO2012010397A3 Rotary vane pump |
| 05/16/2013 | US20130121863 Adjustable vane pump for reducing pressure pulsations during discharge |
| 05/16/2013 | DE102011118245A1 Adjustable vane compressor for air conditioning apparatus, sucks fluid in suction region through suction groove and suction hole and discharges to pressure output over pressure groove |
| 05/16/2013 | DE102011086435A1 Gear pump for conveying fluid, and for use in high-pressure injection system for internal combustion engine, particularly for motor vehicle, has pressure porting opening for discharging fluid to be conveyed from working chamber |
| 05/16/2013 | DE102011086429A1 Innenzahnradpumpe Internal gear pump |
| 05/16/2013 | DE102009019418B4 Umlaufverdrängerpumpe mit verbesserter Lagerschmierung Umlaufverdrängerpumpe with improved bearing lubrication |
| 05/15/2013 | EP2592273A2 Hydraulic pump assembly |
| 05/15/2013 | EP2592272A2 Internal gear pump |
| 05/15/2013 | EP2592271A2 Inner rotor of an internal gear pump |
| 05/15/2013 | CN202937447U Compact drowned three-screw pump |
| 05/15/2013 | CN103104484A Rotary pump with improved seal |
| 05/15/2013 | CN103104483A High-performance low-pressure fuel delivery pump |
| 05/15/2013 | CN101796301B Eccentric worm pump with split stator |
| 05/14/2013 | US8439660 Screw compressor having a second meshing body with at least one projection non-uniformly arranged with respect to the other projections in circumferential direction |
| 05/14/2013 | US8439659 Eccentric screw pump with split stator |
| 05/14/2013 | US8439658 Progressing cavity pump rubber reinforcement device for rotor alignment |
| 05/10/2013 | WO2013067099A1 High pressure seal vent |
| 05/10/2013 | WO2013036516A3 Downhole motors and pumps with asymmetric lobes |
| 05/10/2013 | WO2013028015A3 Oil-free air compressor |
| 05/10/2013 | WO2012079573A3 Vane pump and method for operating a vane pump |
| 05/10/2013 | WO2012058702A3 Pump-out device for pumping mineral oil out of an oil tank |
| 05/10/2013 | WO2011149842A3 Multiphase pump flow recirculation system |
| 05/08/2013 | EP2588756A2 Gear pump |
| 05/08/2013 | DE112011102419T5 Bohrlochwerkzeug mit nanopartikelverstärkter Metallbeschichtung Downhole tool with nanoparticle-enhanced metal coating |
| 05/08/2013 | DE102012210197A1 Elektrische Pumpe und Verfahren zur Herstellung der elektrischen Pumpe Electric pump and method of manufacturing the electric pump |
| 05/08/2013 | CN202926927U Hydraulic buffer |
| 05/08/2013 | CN202926623U Oil inlet device for inside engaged gear pump |
| 05/08/2013 | CN202926622U Oil discharging device of inside-engaged gear oil pump |
| 05/08/2013 | CN202926621U Vane pump rotor |
| 05/08/2013 | CN202926617U Hydraulic pump |
| 05/08/2013 | CN202926616U Reciprocating mixture transfer pump |
| 05/08/2013 | CN202926615U High-pressure pump |
| 05/08/2013 | CN202926614U High-pressure water pump |
| 05/08/2013 | CN202926613U Novel ultrahigh-pressure vane pump |
| 05/08/2013 | CN202926612U High-pressure gear pump |
| 05/08/2013 | CN202926611U Oblique tooth gear oil pump suitable for automobile steering system |
| 05/08/2013 | CN202926610U Condensed water recovery pump |
| 05/08/2013 | CN202926609U Float-type double-screw pump |
| 05/08/2013 | CN202926608U Internal cycloid-engaged gear oil pump |
| 05/08/2013 | CN202926607U Heavy oil conveying device |
| 05/08/2013 | CN103097733A Compressor and refrigeration cycle device using same |
| 05/08/2013 | CN103097732A 叶片泵 Vane pump |
| 05/08/2013 | CN103097731A Gear pump |
| 05/08/2013 | CN103089616A Internal engaged tooth profile pair |
| 05/08/2013 | CN103089615A Leakage type high-pressure vane pump and its use method |
| 05/08/2013 | CN103089614A Blade type hydraulic pump |
| 05/08/2013 | CN103089613A Metering gear pump with integral flow indicator |
| 05/08/2013 | CN103089612A 尿素溶液泵结构 Urea solution pump structure |
| 05/08/2013 | CN103089611A Rotating piston water pump |
| 05/08/2013 | CN103089610A Low-viscosity high-pressure convey double screw pump, and processing technology of helical casings arranged therein |
| 05/08/2013 | CN103089609A Internal gear pump |
| 05/08/2013 | CN103089608A 泵转子 Pump rotor |
| 05/08/2013 | CN103085957A Horizontal double-arc gear pump for high-speed vessel |
| 05/02/2013 | WO2013061820A1 Internal gear pump |
| 05/02/2013 | WO2012022784A3 Rotary piston pump |
| 05/02/2013 | WO2011117154A3 Gear pump |
| 05/02/2013 | US20130108499 Vane cell machine |
| 05/02/2013 | DE102012106844A1 Struktur einer Harnstofflösungspumpe Structure of a urea solution pump |
| 05/02/2013 | DE102012002672A1 Registerpumpe Register pump |
| 05/02/2013 | DE102011117303A1 Method for assembling pendulum sliders of pendulum slider machine, involves carrying out relative rotational movement between rotors, by the contact of slider with end surface of inner rotor, for change in angular position of slider |
| 05/01/2013 | EP2587063A2 Metering gear pump with integral flow indicator |