| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
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| 05/28/2014 | CN203614393U 变螺距双螺杆多相流混输泵螺杆 Variable pitch twin-screw multiphase pump screw multiphase flow |
| 05/28/2014 | CN203614392U 一种齿轮泵 One kind of gear pump |
| 05/28/2014 | CN203614391U 衬套支撑内齿环式内啮合齿轮泵 Inner liner support ring gear internal gear pump |
| 05/28/2014 | CN203614390U 一种自动变速器油泵转子 An automatic transmission oil pump rotor |
| 05/28/2014 | CN203614389U 一种混合动力变速箱油泵 A hybrid power transmission oil pump |
| 05/28/2014 | CN103827504A 潜水泵和用于组装潜水泵的方法 Submersible pump and method for assembling submersible pump |
| 05/28/2014 | CN103827495A 泵转子和使用该泵转子的内齿轮泵 The pump rotor and the pump is an internal gear pump rotor, |
| 05/28/2014 | CN103827494A 内齿轮泵 Internal gear pump |
| 05/28/2014 | CN103821711A 泵结构 Pump structure |
| 05/27/2014 | US8734142 Rotation preventing member of a scroll compressor |
| 05/27/2014 | US8734141 Stator/rotor assemblies having enhanced performance |
| 05/22/2014 | WO2014077835A1 Vane pumps and methods of operating same |
| 05/22/2014 | WO2013167120A3 Divided stator casing |
| 05/22/2014 | WO2013113545A3 Pump having an electric motor |
| 05/22/2014 | US20140140879 Rotary mechanism with articulating rotor |
| 05/22/2014 | DE102012211644A1 Pump for attachment to motor driven power tool e.g. core drill, has a rotor shaft and a female housing connected to a suction conduit, in which the shaft has a restrictor structure which is arranged eccentric to the axis of rotation |
| 05/22/2014 | DE102012022787A1 Internally controlled gear pump used in pressurized control system, has axial grooves that extend axially over entire length of inner rotor, where ratio of radius of outer tooth root surface and radius of groove is of specific value |
| 05/22/2014 | DE102011001041B4 Magnetisch angetriebene Pumpenanordnung mit einer Mikropumpe mit Zwangsspuelung und Arbeitsverfahren Magnetically driven pump assembly with a micropump with Zwangsspuelung and working methods |
| 05/21/2014 | EP2732164A1 Gear ring pump |
| 05/21/2014 | CN203604195U 伺服弹簧叶片泵 Servo spring vane pump |
| 05/21/2014 | CN203604194U 多出油口式内啮合齿轮泵 Gear pump more oil port type within |
| 05/21/2014 | CN103807164A 一种用于降低齿轮泵振动噪声的侧板 A gear pump vibration and noise reducing plates for |
| 05/20/2014 | US8726660 Dual-inlet supercharger for EGR flow control |
| 05/15/2014 | WO2014074294A2 Trochoidal rotary device |
| 05/15/2014 | WO2014074021A1 Cylinder/piston group for a rotary vane device |
| 05/15/2014 | WO2014071976A1 Variable displacement lubricant pump |
| 05/15/2014 | WO2014001138A3 Gear pump |
| 05/15/2014 | US20140134028 Rotary vane expander |
| 05/15/2014 | US20140134013 Immersion Pump and Method for Assembling an Immersion Pump |
| 05/15/2014 | DE102013214276A1 Zahnradpumpenvorrichtung Gear pump device |
| 05/15/2014 | DE102012220446A1 Gear machine, particularly pump or motor, has two gear wheels that are meshed with each other in external engagement, where closed channel is provided in housing |
| 05/15/2014 | DE102012210938A1 Innenzahnradpumpe Internal gear pump |
| 05/15/2014 | DE102012210925A1 Doppelinnenzahnradpumpe Double internal gear pump |
| 05/14/2014 | EP2730784A1 Oil pump rotor |
| 05/14/2014 | EP2729706A1 Rotary fluid machine |
| 05/14/2014 | CN203594601U 非对称加工齿轮孔型齿轮泵 Pass asymmetric processing gear gear pump |
| 05/14/2014 | CN203594600U 一种装配有非对称侧板的齿轮泵 A method of assembling an asymmetric gear pump side plates |
| 05/14/2014 | CN203594599U 船用双吸大流量三螺杆泵 Marine double suction large flow three screw |
| 05/14/2014 | CN203594598U 一种立式螺杆泵 To provide a vertical screw |
| 05/14/2014 | CN203594597U 具有内外置轴承通用结构的三螺杆泵 Outboard bearing having the general structure within three screw |
| 05/14/2014 | CN103790822A 螺旋泵 Screw Pump |
| 05/14/2014 | CN103790821A 玻璃钢游艇用液压动力装置 Fiberglass boat with a hydraulic power unit |
| 05/14/2014 | CN103790638A 具有转轮涡环机构的流体机械 Fluid mechanical vortex ring with a runner agencies |
| 05/14/2014 | CN103790637A 双轮星旋式的流体机械、发动机、流体马达、压缩机及泵 Star wheel rotating fluid machinery, engines, fluid motors, compressors and pumps |
| 05/14/2014 | CN103786710A 旋转泵和具有该旋转泵的制动系统 Rotary pump and the rotary pump with a brake system |
| 05/13/2014 | US8721310 Rotary motor for compressible media |
| 05/13/2014 | US8721309 Airtight compressor |
| 05/08/2014 | WO2013185127A3 Out rotor drive electrical vane pump |
| 05/08/2014 | WO2013163995A3 Self-fixing stator housing |
| 05/08/2014 | US20140127067 Screw Compressor |
| 05/08/2014 | US20140127031 Screw rotor for exhaust pump, method for manufacturing the same, gas exhaust pump having screw rotor, and manufacturing method and assembly method of the same |
| 05/08/2014 | DE202013000976U1 Flügel für eine Flügelzellenvorrichtung sowie Flügelzellenvorrichtung Wings for a vane apparatus and vane device |
| 05/08/2014 | DE102013004528B3 Rotary piston pump for supplying water, oils, acids or bases, has rotary piston rotatable in pump chamber and two external rotors, by which inlets and outlets are releasable or blockable depending on momentary positions of external rotors |
| 05/08/2014 | DE102012219406A1 Rotary piston pump i.e. gear pump, has conveying elements rotated in first rotation plane, and control element rotated in second rotation plane, where first rotation plane is laterally displaced at second rotation plane |
| 05/07/2014 | EP2726741A1 Positive-displacement rotary pump having a positive-displacement auxiliary pumping system |
| 05/07/2014 | EP2726740A2 Micropump, bearing element for a micropump, and working method |
| 05/07/2014 | CN203584802U 一种齿轮泵 One kind of gear pump |
| 05/07/2014 | CN203584801U 转子泵 Rotor pump |
| 05/07/2014 | CN203584800U 一种出料均匀的转子泵 One kind of uniform rotor pump discharge |
| 05/07/2014 | CN203584799U 一种改进的齿轮泵 An improved gear pump |
| 05/07/2014 | CN203584798U 潜水螺杆电泵 Submersible Screw Pump |
| 05/07/2014 | CN203584797U 一种改变油路进出口位置的齿轮泵 A method of modifying the position of the gear pump the oil import and export |
| 05/07/2014 | CN103782035A 旋转叶片式压缩机 Rotary vane compressor |
| 05/07/2014 | CN103775332A 一种圆弧齿轮泵 One kind of arc gear pump |
| 05/06/2014 | US8714950 Scroll compressor having tip seals of different lengths having different thickness or widths |
| 05/01/2014 | WO2014064045A2 Screw pump and method for compensating transverse forces |
| 05/01/2014 | US20140119974 Lightweight and Flexible Rotors for Positive Displacement Devices |
| 05/01/2014 | US20140119973 Internal gear pump |
| 05/01/2014 | US20140119967 Rotary Expansible Chamber Devices Having Adjustable Working-Fluid Ports, and Systems Incorporating The Same |
| 05/01/2014 | US20140117748 Rotary pump and braking system having the same |
| 05/01/2014 | CA2831980A1 Lightweight and flexible rotors for positive displacement devices |
| 04/30/2014 | EP2724028A2 Internal gear pump |
| 04/30/2014 | DE102012219847A1 Pendulum vane pump for supplying internal combustion engine with lubricant, comprises internal rotor and external rotor, where supply and disposal of pendulum vane pump are radially carried out with fluid to be conveyed and pumped |
| 04/30/2014 | DE102012219649A1 Internal gear pump for use in injection system for conveying e.g. petrol to combustion chamber of combustion engine in motor car, has housing made of thermoplastic plastic material and functioning as bearing bush |
| 04/30/2014 | DE102012219521A1 Seal assembly of hydraulic pump or hydraulic motor, has sealing element that is designed in form of sealing line inclined web integral with first portion and is limited with groove laterally |
| 04/30/2014 | DE102012110228A1 Schraubenpumpe und Verfahren zur Kompensation von Querkräften Screw pump and method of compensating for lateral forces |
| 04/30/2014 | DE10144641B4 Entspannungsventil Expansion valve |
| 04/30/2014 | CN203570584U Compact linear conjugate internal gear pump |
| 04/30/2014 | CN203570583U Oil return device of linearly-conjugated internal gear pump |
| 04/30/2014 | CN203570582U Internal gear of gear pump provided with particle receiving device |
| 04/30/2014 | CN103758758A Alternating current servo direct drive electro-hydraulic pump |
| 04/30/2014 | CN103758757A Eight-blade differential pump driven by Fourier noncircular gears |
| 04/30/2014 | CN103758756A Balanced metal screw pump |
| 04/30/2014 | CN103758755A Sinusoidal non-circular gear driven eight-vane differential velocity pump |
| 04/30/2014 | CN103758754A Four-blade differential speed pump driven by Pascal non-circular gears |
| 04/30/2014 | CN103758753A Six-blade differential speed pump driven by Pascal non-circular gears |
| 04/30/2014 | CN103758752A Eight-blade differential speed pump driven by Pascal non-circular gears |
| 04/30/2014 | CN103758751A Four-blade differential pump driven by elliptic non-circular gears |
| 04/30/2014 | CN103758750A Six-blade differential pump driven by Fourier noncircular gears |
| 04/30/2014 | CN103758749A Sinusoidal non-circular gear driven six-vane differential velocity pump |
| 04/30/2014 | CN103758748A Sinusoidal non-circular gear driven four-vane differential velocity pump |
| 04/30/2014 | CN102808654B Rotating valve mechanism and planetary rotating device using same |
| 04/30/2014 | CN101939544B Device for dividing a flow equally between two or more objects |
| 04/29/2014 | US8708678 Gear pump |
| 04/29/2014 | US8708677 Screw compressor having injection having injection mechanism that injects oil or refrigerant toward a starting end of an extending direction of a helical groove of the female rotor or the male rotor |
| 04/24/2014 | WO2014060137A2 Internal gear pump for a hydraulic motor vehicle brake system |
| 04/24/2014 | WO2014060136A1 Internal gear pump |
| 04/24/2014 | WO2014059965A2 Arrangement of a coolant pump. |
| 04/24/2014 | WO2013167371A3 Pump unit |
| 04/24/2014 | WO2013155140A9 Method of determining pump flow in rotary positive displacement pumps |