| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
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| 02/16/2011 | EP1397311B1 Device for thickening or dewatering sludge, watery sediments or the like, especially surplus sludge in sewage treatment plants |
| 02/16/2011 | CN201748136U Two-in-one engine-oil pump |
| 02/16/2011 | CN201748135U Novel external rotor driving motor oil pump |
| 02/16/2011 | CN201748134U Novel oil pump with double-layer structure |
| 02/16/2011 | CN201747596U Non-sealed double-screw pump synchronizing gear structure |
| 02/16/2011 | CN201747595U Overload protection slurry pump |
| 02/16/2011 | CN201747594U Gear pump |
| 02/16/2011 | CN201747593U Asphalt pump |
| 02/16/2011 | CN201747592U Glue supply pump |
| 02/16/2011 | CN201747591U Arc cycloid rotary oil transfer pump |
| 02/16/2011 | CN101978167A 油泵 Pump |
| 02/16/2011 | CN101975163A Hydraulic vane pump |
| 02/16/2011 | CN101975162A Valve-group reversing type gear pump |
| 02/16/2011 | CN101975161A Gear pump |
| 02/16/2011 | CN101975160A Double-screw liquid pump |
| 02/16/2011 | CN101975159A Double-stator single-rotor screw motor consubstantial pump |
| 02/16/2011 | CN101975094A Liquid pump of screw expander |
| 02/16/2011 | CN101147000B Vane cell pump |
| 02/15/2011 | US7887309 Gear pump having optimal axial play |
| 02/10/2011 | WO2011016938A2 Scroll compressor with radially configured motor winding |
| 02/10/2011 | WO2011015717A2 Rotating machine having oblique crankshafts |
| 02/10/2011 | WO2011015125A1 Prime motor with special-shaped cavity |
| 02/10/2011 | WO2011015123A1 Metering pump with special-shaped cavity |
| 02/10/2011 | WO2011015122A1 Conversion device of mechanical motion and fluid motion |
| 02/10/2011 | US20110033330 Gear pump for viscous media |
| 02/10/2011 | DE202010015203U1 Radkolbenmaschine Radkolbenmaschine |
| 02/10/2011 | DE102009028095A1 Pump e.g. internal gear pump, for use in fuel injection system for e.g. conveying fuel into combustion chamber of internal combustion engine of car, has electric motor including stator partially arranged within cylinder |
| 02/09/2011 | EP2282059A1 Gear pump with magnetic coupling assembly |
| 02/09/2011 | CN201739173U Sliding vane pump with external sliding vane |
| 02/09/2011 | CN201739172U Delivery gear pump provided with heating or cooling cavity |
| 02/09/2011 | CN201739171U Gear pump with connected structure |
| 02/09/2011 | CN201739170U Oil gas pump spiral bushing gap adjusting device |
| 02/09/2011 | CN201739169U Novel type single screw pump |
| 02/09/2011 | CN201739168U Retaining device for gear of fuel pump |
| 02/09/2011 | CN101970881A Gerotor and method of assembling the same |
| 02/09/2011 | CN101968053A Variable displacement pump having rotating cam ring |
| 02/09/2011 | CN101968052A 高压齿轮油泵 High pressure gear pump |
| 02/09/2011 | CN101968029A Rotary fluid pressure device and improved integral brake assembly |
| 02/08/2011 | US7882826 Tapered rotor assemblies for a supercharger |
| 02/03/2011 | WO2011012364A2 Gear pump |
| 02/03/2011 | WO2011012362A2 Gear pump |
| 02/03/2011 | WO2011012350A2 Internal gear pump |
| 02/03/2011 | WO2011012024A1 Vane pump and fuel injecting pump device comprising vane pump |
| 02/03/2011 | US20110027115 Scroll compressor |
| 02/03/2011 | DE202009012158U1 Drehkolbenpumpe Rotary pump |
| 02/03/2011 | DE102009028098A1 Innenzahnradpumpe Internal gear pump |
| 02/02/2011 | EP2279324A1 Stator for use in helicoidal motor |
| 02/02/2011 | CN201730824U Stainless steel magnetic transmission gear pump |
| 02/02/2011 | CN101965458A Progressive cavity apparatus with transducer and methods of forming and use |
| 02/02/2011 | CN101965457A Cartridge-type single-screw pump and dye-meter equipped with such pump |
| 02/02/2011 | CN101963152A Oil filter coupling magnetic drive pump |
| 02/02/2011 | CN101619660B Special-shape cavity prime motor |
| 02/02/2011 | CN101265912B Double-acting rotor pump double flow stator |
| 02/01/2011 | US7878783 Gear pump with components constructed as a homogenous workpiece |
| 02/01/2011 | US7878780 Scroll compressor suction flow path and bearing arrangement features |
| 02/01/2011 | US7878779 Vane pump with housing end wall having an annular groove and a pressure groove that communicate via a curved connecting groove |
| 02/01/2011 | US7878778 Rotary compressor having main bearing integrally formed with cylinder or piston serving as fixed side |
| 02/01/2011 | US7878776 Thermally compensated scroll machine |
| 01/27/2011 | WO2011009216A1 Blade support in a quasiturbine pump |
| 01/27/2011 | WO2010060416A4 Sliding vane pump |
| 01/27/2011 | CA2768255A1 Blade support in a quasiturbine pump |
| 01/26/2011 | EP2278165A2 Rotary piston pump with angular gear |
| 01/26/2011 | EP2278164A2 Progressive cavity pump |
| 01/26/2011 | CN201723442U Variable displacement energy-saving lubricating oil vane pump |
| 01/26/2011 | CN201723441U Vane type automobile power steering oil pump |
| 01/26/2011 | CN201723440U Gear pump |
| 01/26/2011 | CN201723439U Submerged pump |
| 01/26/2011 | CN101960145A High temperature progressive cavity motor or pump component and method of fabrication |
| 01/26/2011 | CN101639063B Gear type oil pump |
| 01/20/2011 | WO2010123556A3 Vane pump with improved rotor and vane extension ring |
| 01/20/2011 | US20110014080 Gear type performance oil pump |
| 01/19/2011 | EP2275684A1 Assembly with a gear pump |
| 01/19/2011 | EP2275683A1 Method for controlling a gear pump and an application of the method |
| 01/19/2011 | EP2275682A1 Oil supplying apparatus for engine |
| 01/19/2011 | EP2274503A2 Device with rotary pistons that can be used as a compressor, a pump, a vacuum pump, a turbine, a motor and as other driving and driven hydraulic-pneumatic machines |
| 01/19/2011 | CN201715219U Pump cover of rotor-type oil pump and rotor-type oil pump |
| 01/19/2011 | CN201714659U Large discharge vane pump |
| 01/19/2011 | CN201714658U High-pressure gear pump |
| 01/19/2011 | CN201714657U High pressure gear pump for floating compensation of radical clearance |
| 01/19/2011 | CN201714527U Electric fuel pump |
| 01/19/2011 | CN201714428U Rotating machine with cylindrical cavity, straight shaft, eccentric rotor and retractable wheel blade |
| 01/19/2011 | CN101365880B Method of generation of a surgeless flow of the working fluid and a device for its implementation |
| 01/19/2011 | CN101173659B Variable displacement pump |
| 01/18/2011 | US7871252 Rotary compressor having two compression capacities |
| 01/13/2011 | DE102009027542A1 Gear pump, particularly external gear pump has two combing gears made of a sintered material, particularly sintered steel, whose surface has friction-reducing coating |
| 01/13/2011 | DE102005048602B4 Flügelzellenmaschine, insbesondere Flügelzellenpumpe Vane machine, in particular a vane pump |
| 01/12/2011 | EP2273122A2 Split discharge vane pump and fluid metering system therefor |
| 01/12/2011 | EP2273121A2 Container assembly for a volumetric pump |
| 01/12/2011 | EP1046456B1 Method of manufacturing pin holding ring for internal gear, internally meshed planetary gear structure, and hydraulic motor and pump |
| 01/12/2011 | CN201705665U Blade type automobile motive power steering oil pump with pressing spring |
| 01/12/2011 | CN201705664U Separated syrup unloading pump for syrup |
| 01/12/2011 | CN201705663U Melt metering pump |
| 01/12/2011 | CN201705662U New type double-screw oil gas mixing transmission pump |
| 01/12/2011 | CN201705661U Mesh type twin-screw pump |
| 01/12/2011 | CN201705660U Cam type double-rotor pump |
| 01/12/2011 | CN201705659U Automatic transmission gear pump |
| 01/12/2011 | CN201703250U Power takeoff combined pump |
| 01/12/2011 | CN101943162A Pressure-adjusting screw pump |
| 01/12/2011 | CN101403382B Gear pump for micro-miniature turbojet engine |
| 01/11/2011 | US7866967 Pump having an intermediate element with a pivot bearing within a rotor for connecting the rotor with a coupling device |