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)
07/2003
07/01/2003US6585498 Motor-pump unit with pump shaft pinion enmeshed with motor rotor
06/2003
06/26/2003WO2003052272A1 Improved gerotor pumps and methods of manufacture therefor
06/26/2003US20030118458 Pump with a flow-regulating valve device and an injector device
06/26/2003US20030118454 Torque control oil pump with low parasitic loss and rapid pressure transient response
06/25/2003EP1320682A2 Vane pump
06/25/2003EP1320681A2 Vane pump
06/25/2003CN2557725Y Melted metal conveying pump
06/25/2003CN1112512C Stud gear mechanism
06/19/2003WO2003050418A1 Feed pump for fluidic media
06/19/2003WO2003050417A1 Vane-cell pump
06/19/2003US20030113217 Regulated pump
06/19/2003US20030113216 Control device for positive displacement pumps
06/19/2003US20030113212 Hydraulic transformer
06/19/2003US20030111221 Insertable progessing cavity pump
06/18/2003EP1319837A1 Gerotor pump
06/18/2003DE10207483C1 Eccentric peristaltic pump for viscous fluids has curved shaft connected between rotor and drive shaft with latter coaxial
06/18/2003CN2556389Y Contactless vane pump
06/17/2003US6579081 Spherical positive-displacement rotary machine
06/12/2003WO2003048582A1 Auto suction hybrid pump
06/12/2003WO2003048580A1 Gear pump
06/12/2003WO2003000603A3 Device for thickening or dewatering sludge, watery sediments or the like, especially surplus sludge in sewage treatment plants
06/12/2003US20030108445 Motor-type fuel pump for vehicle
06/11/2003EP1318305A2 Vane pump
06/11/2003EP1318304A2 Vane pump
06/11/2003EP0920588B1 Medical gear pump for suctioning and rinsing
06/11/2003CN2555426Y Six-blade differential pump
06/11/2003CN2555425Y 8-blade differential pump
06/10/2003CA2371155C Method of removing stators from tubular stator housings
06/05/2003WO2002097274A3 Vane pump rotor
06/05/2003US20030103856 Stator tube removal and installation device
06/04/2003EP1315908A1 Roller vane pump incorporating a bearing bush
06/04/2003CN1421298A Integral piston with embedded blades and its manufacture
06/03/2003US6572353 Hydraulic gerotor motor having a valve plate adjacent the toothed wheel
06/03/2003US6572339 Positive displacement fluid pump having improved fill characteristics
05/2003
05/30/2003WO2003044372A1 Rotary piston pump
05/30/2003WO2003044368A1 Vane pump having a pressure compensating valve
05/30/2003WO2002027187A9 Vane pump
05/29/2003US20030099547 apparatus fpr Dispensing a Meat Product
05/29/2003CA2413113A1 Two stage coplanar continuously self-regulating gerotor pump
05/28/2003DE20300753U1 Rolling axial machine has cylindrical rotor eccentrically located in cylindrical housing and with slot-like recesses on circumference with rounded base and in which locate one or more elements of cylindrical base geometry
05/28/2003CN2553139Y Rotor pump
05/28/2003CN2553138Y Screw pump
05/28/2003CN1420278A Gear pump
05/28/2003CN1420276A Slide valve type gear rotor motor
05/28/2003CN1420275A Sleeve clutch gear type double-rotating two end cover plate piston machine
05/28/2003CN1109823C Spool valve wheel motor
05/27/2003US6568930 Internal gear pump having a radial adjustment
05/27/2003US6568929 Trochoid gear pump having means for canceling imbalance load
05/27/2003US6568076 Method of making an internally profiled stator tube
05/22/2003WO2003042539A1 Roller vane pump
05/22/2003US20030094197 System for injecting fuel into a turbomachine
05/21/2003EP1312802A2 Rotary vane pump
05/21/2003EP1312779A1 Fuel injection system for turbomachines
05/21/2003EP1311762A1 Internal geared wheel pump
05/21/2003CN2551781Y Double action sliding plate pump
05/20/2003US6565473 Hydraulic pressure control apparatus for automatic transmission of vehicle
05/20/2003US6565341 Geared feed pump for supplying fuel to a high pressure fuel pump
05/20/2003US6565337 Method and apparatus for inspecting vanes in a rotary pump
05/20/2003US6565328 Self aligning cartridge pump
05/20/2003CA2274413C Rotary compressor with vane body immersed in lubricating fluid
05/20/2003CA2157617C Keyed insert plate for curved rotary lobe pump chamber walls
05/15/2003WO2003040565A2 Continuous-flow pump and stepless speed change drive
05/15/2003US20030091454 Rotary variable expansible chamber - kinetic hybrid pump
05/15/2003US20030091453 Gerotor pump with varible tolerance housing
05/15/2003US20030091452 Rotary vane pump with under-vane pump
05/15/2003US20030091442 Liquid dispensing pump system
05/14/2003EP1310676A1 Pumping device with Moineau pump
05/14/2003EP1310347A2 Extruder incorporating planetary gear pump
05/14/2003CN1417476A Fluid compressing pump
05/14/2003CN1417014A Polymer melt mixing and conveying equipment
05/13/2003US6561777 Downhole roller vane motor and roller vane pump
05/13/2003US6561768 Device for supplying liquids, in particular, fuel
05/08/2003WO2003037965A1 Sliding member and pump
05/08/2003US20030087718 Gear pump for automatic transmission
05/07/2003EP1308624A1 Submersible motor-driven pump
05/07/2003EP1308623A1 Fixing system for a projecting machine
05/07/2003CN2549210Y Double-axial seal compensating high pressure gear pump
05/07/2003CN1415860A Revolving positive displacement typed gydraulic driving gear and hydraulic driving pumping unit
05/02/2003EP1305263A1 Method for production of an expanding cement and corresponding test device
05/02/2003EP0865575B9 Double worm system
05/01/2003WO2003036092A1 Flanged gear pump
05/01/2003WO2003036091A1 Internal gear pump
05/01/2003US20030080613 Rotary pump and braking apparatus using rotary pump
04/2003
04/30/2003DE10156835C1 Rotary piston pump for conveying media comprises an annular piston having control pockets opening toward its axial end surface for controlling inlet and outlet openings
04/30/2003CN2547913Y Low-pressure variable vane pump
04/30/2003CN2547912Y Hydraulic gear pump with axial sealing compensation device
04/30/2003CN2547911Y Variable gear pump
04/30/2003CN2547910Y 电动泵 Electric pump
04/30/2003CN1414246A Electric fuel pump for vehicle
04/29/2003US6554593 Dry screw vaccum pump having nitrogen injection
04/24/2003WO2003033912A1 Vane type rotary machine
04/24/2003US20030077196 Internal-gear pump
04/23/2003EP1303701A2 Pump
04/23/2003CN2546653Y Controllable centrifugal sliding vane rotary fluid compression conveyer
04/23/2003CN1412439A Internal meshed gear pump
04/23/2003CN1106500C Oil pump device of engine
04/22/2003US6551083 Micromotor and micropump
04/22/2003US6551070 Devices and methods for noise suppression in pumps
04/17/2003WO2002086322A3 Fluid controlled pumping system and method
04/17/2003US20030072667 Rotary pump
1 ... 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 ... 143