| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
|---|
| 06/05/2001 | US6241494 Non-elastomeric stator and downhole drilling motors incorporating same |
| 06/05/2001 | US6241392 Hybrid bearing |
| 05/31/2001 | WO2001038739A1 Device for reducing the axial load of a pump which delivers fluid |
| 05/30/2001 | EP1102935A1 A motor driven pump |
| 05/30/2001 | EP0746672B1 Positive displacement pump apparatus |
| 05/30/2001 | CN2432356Y Double gear tooth engagement type compressor pump |
| 05/29/2001 | US6238315 Hydraulic coupling for vehicle drivetrain |
| 05/25/2001 | WO2001036318A1 Compact pumping unit |
| 05/23/2001 | DE19955480A1 Self-controlling rotary piston pump with constant lift comprises rotor with rotor disk rotatable relatively to it, at least two cylinder channels being provided in rotor and centrally joined to one another |
| 05/23/2001 | CN1296395A Quiet vacuum cleaner using vacuum pump with lobed chamber |
| 05/23/2001 | CN1296133A Positive-displacement type hydraulic component with almost zero side gap |
| 05/22/2001 | US6236897 Calculation and precision processing of cardiocle and expanded cardioid casing curved surfaces for eccentric rotor vane pumps |
| 05/22/2001 | US6234776 Vane pump |
| 05/22/2001 | US6234775 Pump with deformable thrust plate |
| 05/22/2001 | US6233942 Condensing turbine |
| 05/22/2001 | CA2153385C Pumping process for operating a multi-phase screw pump and pump |
| 05/17/2001 | DE10047368A1 Positive displacement hydraulic unit, e.g. hydraulic pumps or motors, comprises housing, gerotors, and non-metallic abradable coating material layer |
| 05/16/2001 | EP1099855A2 Internal gear oil pump made of aluminium alloys |
| 05/16/2001 | CN1295197A Progressive cavity pump with fusible stator |
| 05/15/2001 | US6230823 Downhole motor |
| 05/15/2001 | CA2025824C Gear ring pump for internal-combustion engines and automatic transmissions |
| 05/10/2001 | WO2001033082A1 Vane type fluid machinery |
| 05/10/2001 | WO2001033081A1 Pump for a fluid or gaseous medium |
| 05/10/2001 | WO2001033079A1 Pumps |
| 05/10/2001 | WO2001033047A1 Rotary piston machine |
| 05/10/2001 | DE19953810A1 Rotary hydraulic pump has two sets of rotors on two common shafts and separated by a bulkhead to form separate pump units |
| 05/10/2001 | DE19953168A1 Drehkolbenmaschine Rotary engine |
| 05/10/2001 | DE19952605A1 Pumpe für ein flüssiges oder gasförmiges Medium Pump for a liquid or gaseous medium |
| 05/10/2001 | CA2389689A1 Pumps |
| 05/09/2001 | EP1097305A1 Screw pump |
| 05/09/2001 | CN2429655Y Rotor machine with assembled accentric shaft for self pressured lubrication |
| 05/09/2001 | CN1294264A Concrete delivering pump with annular cylinder |
| 05/08/2001 | US6227833 Fluid machine having cooperating displacement elements and a housing partially covering the displacement elements |
| 05/08/2001 | US6227829 Eccentric screw pump |
| 05/08/2001 | US6227828 Gear pump for use in an electrically-operated sealed compressor |
| 05/08/2001 | US6227816 Hydraulic delivery device |
| 05/08/2001 | US6227797 Rotary pump with hydrodynamically suspended impeller |
| 05/03/2001 | WO2001006095A3 High efficiency turbine |
| 05/03/2001 | WO2000079132A3 Downhole roller vane pump |
| 05/02/2001 | EP1096149A2 Positive displacement pump and thrust bearing assembly |
| 05/02/2001 | EP1095218A1 Internally profiled stator tube |
| 04/26/2001 | WO2001029423A1 Eccentric screw pump with fully lined stator |
| 04/26/2001 | WO2001029422A1 Stator with rigid retaining ring |
| 04/26/2001 | DE19950258A1 Eccentric worm pump or motor has stator with end ring with through opening of essentially similar shape to stator interior, threaded with same pitch and number of turns over ring thickness |
| 04/26/2001 | DE19950257A1 Eccentric worm pump has cladding in stator casing forming helical bore, seal on connection arrangement forming single element with cladding to seal stator with respect to housing part |
| 04/26/2001 | DE19948493A1 Conveyor, pump and cutting system has pre-mincing stage consisting of pre-cutter in pressure pipe and double thread screw conveyor, and post-mincing stage consists of one or two section cutting assembly installed in pressure pipe |
| 04/26/2001 | CA2314415A1 Positive displacement pump and thrust bearing assembly |
| 04/25/2001 | CN1292462A Shuttle valve hot oil pump |
| 04/24/2001 | US6220838 Progressive cavity pump with meltable stator |
| 04/24/2001 | US6220837 Progressing cavity pump having a ratio of eccentricity, rotor diameter and stator lead |
| 04/19/2001 | WO2001027477A1 Water pump (circulation pump) using no retainer |
| 04/19/2001 | WO2001027476A1 High pressure cleaning device |
| 04/18/2001 | CN1292060A Rotary-piston machine |
| 04/17/2001 | US6217296 Variable displacement pump |
| 04/12/2001 | WO2001025639A1 Twin pump |
| 04/12/2001 | WO2001025638A1 Gear pump with double effort compensation |
| 04/12/2001 | DE19948860A1 Hochdruckreinigungsgerät High pressure cleaning equipment |
| 04/12/2001 | DE19945122A1 Hydraulische Steuereinrichtung Hydraulic control device |
| 04/11/2001 | EP1091126A1 Internal gear pump |
| 04/11/2001 | CN2426529Y Double-action variable blade pump |
| 04/11/2001 | CN1064437C Tooth screw stem |
| 04/10/2001 | US6213745 High-pressure, self-lubricating journal bearings |
| 04/10/2001 | US6213743 Displacement type fluid machine |
| 04/10/2001 | US6213740 Flexible impeller pump having a transparent safety cover |
| 04/04/2001 | EP1088169A1 Lubricating oil supplying arrangement for an apparatus having a rotating apparatus shaft |
| 04/04/2001 | CN1290311A Extrusion pump |
| 04/03/2001 | US6210139 High efficiency gear pump for pumping highly viscous fluids |
| 04/03/2001 | US6210138 Rotary pump apparatus and method |
| 04/03/2001 | US6210137 Scroll fluid machine |
| 04/03/2001 | CA2084683C Rotary vane machine with simplified anti-friction positive bi-axial vane motion control |
| 03/29/2001 | WO2001021957A1 Internally generated rotor set for low viscosity and abrasive metering applications |
| 03/29/2001 | WO2001002730A8 Internal gear machine for reversed operation in a closed hydraulic circuit |
| 03/29/2001 | DE19945922A1 Innenzahnradpumpen umfassendes Pumpenaggregat Internal gear pumps complete pump unit |
| 03/29/2001 | CA2385184A1 Internally generated rotor set for low viscosity and abrasive metering applications |
| 03/28/2001 | EP1087139A2 Internal gear pump |
| 03/28/2001 | EP1087138A2 Pump unit with two internal gear pumps |
| 03/27/2001 | US6206667 Pump for dispensing resins |
| 03/27/2001 | US6206666 High efficiency gear pump |
| 03/27/2001 | US6205779 Integral hub driven gears |
| 03/22/2001 | DE19952287A1 Relief valve apparatus used in oil pump of internal combustion engine, has one of relief holes with maximum opening area, which are sequentially opened |
| 03/22/2001 | DE19942567A1 Vorrichtung zum Pumpen von Fluid A device for pumping fluid |
| 03/21/2001 | EP1083818A1 Quiet vacuum cleaner using a vacuum pump with a lobed chamber |
| 03/21/2001 | CN2424313Y Butterfly type volumn variator |
| 03/21/2001 | CN1063528C Vortex compressor |
| 03/21/2001 | CN1063527C Shell-rotating double-action variable vane motor |
| 03/20/2001 | US6203439 Hydraulic machine |
| 03/20/2001 | US6203303 Vane pump |
| 03/20/2001 | US6203301 Fluid pump |
| 03/15/2001 | WO2001018398A1 Device for conveying a gaseous or liquid medium |
| 03/15/2001 | WO2001018397A1 Gear pump with a drive and a hydraulic tank |
| 03/15/2001 | DE19942221A1 Einrichtung zur Förderung eines gasförmigen oder flüssigen Mediums Means for conveying a gaseous or liquid medium |
| 03/15/2001 | CA2317367A1 Rotary positive displacement device |
| 03/14/2001 | EP0987438B1 Security against rotation for stators of eccentric screw pumps |
| 03/14/2001 | CN2423428Y Synchonous suction-excavating rotor pump |
| 03/14/2001 | CN1287519A Method of manufacturing pin holding ring for internal gear, internally meshed planetary gear structure, and hydraulic motor and pump |
| 03/09/2001 | CA2281727A1 Single string rotary pump system |
| 03/08/2001 | WO2001016489A2 Rotary displacement machine with at least two displacement gearwheels with external teeth |
| 03/08/2001 | WO2001016465A1 Pump |
| 03/08/2001 | DE10036105A1 Device for conveying medium such as circulating piston pump has sealing rollers or balls sliding on housing wall as first and second wheels rotate without contact |
| 03/07/2001 | EP1081381A2 Gear pump |