| Patents for F04B 1 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (10,723) |
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| 06/06/2001 | CN2433412Y Superhigh pressure radial plunger pump |
| 06/06/2001 | CN1298473A Axial piston variable displacement machine |
| 06/05/2001 | US6241488 Multi-piston hydraulic pump for a free piston engine |
| 06/05/2001 | US6241484 Radial piston pump |
| 06/05/2001 | US6240826 Radial piston pump |
| 05/31/2001 | DE19957568A1 Flywheel assembly with axial stroke piston engine has damping device mounted inside engine and preferably in transmission switched in between engine and flywheel |
| 05/31/2001 | DE19957565A1 Hydrostatic piston engine has machine housing fixed in surrounding support housing by torque-transferring vibration-damping means |
| 05/31/2001 | DE10055753A1 Inclined plate hydrostatic axial piston machine has slide shoe linkage center point in plane with intersection with cylinder block rotation axis in block end containing piston outlet openings |
| 05/30/2001 | EP1102932A1 Motor pump unit for a high-pressure cleaning apparatus |
| 05/30/2001 | CN1066520C Straight shaft plunger mud pump |
| 05/29/2001 | US6238189 Radial piston pump for high-pressure fuel supply |
| 05/29/2001 | US6237467 Hydrostatic machine piston |
| 05/29/2001 | US6237465 Axial piston machine with curved bearing surface on the drive plate |
| 05/29/2001 | US6237441 Combination of shim and cam |
| 05/25/2001 | WO2001036820A1 Hydraulic piston pump |
| 05/23/2001 | EP1101940A2 High pressure fuel pump delivery control by piston deactivation |
| 05/23/2001 | EP1101939A2 Multicylinder piston pump |
| 05/23/2001 | EP1101035A1 Piston pump |
| 05/23/2001 | EP0938632A4 Fluid pump with split plungers |
| 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 | DE19953248A1 Radialkolbenpumpe Radial piston pump |
| 05/23/2001 | CN1296134A Single piece type proportion controller |
| 05/17/2001 | DE19958936C1 Automobile braking system with motor/ pump unit has sealing element for separation of electrodynamic and hydraulic regions of motor/pump unit |
| 05/17/2001 | DE10051620A1 Tandem pump unit has common housing with first and second openings at opposite ends relative to direction of pump shafts plus separating wall |
| 05/16/2001 | EP1099055A1 Radial piston engine with roller guides |
| 05/16/2001 | CN1295486A Metered dose infusion pump and method |
| 05/10/2001 | WO2001033077A1 Radial piston pump |
| 05/09/2001 | EP1098089A2 Radial piston pump with cam stabilisation |
| 05/09/2001 | EP1097500A2 Control system with integrated actuation package |
| 05/09/2001 | CN1294036A Filling type hydraulic piston and its mfg. method |
| 05/08/2001 | US6227167 Suction controlled pump for HEUI systems |
| 05/03/2001 | WO2001031198A1 Motor-pump aggregate |
| 05/03/2001 | DE10042720A1 Fuel pump has sealing device between working chamber and bearing containing at least one sealing element associated with pump element, e.g. two sealing elements with separating volume |
| 05/01/2001 | US6224352 Piston pump in a brake system of a vehicle |
| 05/01/2001 | US6224351 Radial pistol pump |
| 05/01/2001 | US6224350 Radial piston pump for high-pressure fuel delivery |
| 05/01/2001 | US6224347 Low volume, high precision, positive displacement pump |
| 05/01/2001 | US6224346 Fluid pump |
| 05/01/2001 | US6223529 Hydraulic system with a hydromotor fed by a hydraulic transformer |
| 04/26/2001 | DE19949169A1 Verstellvorrichtung Adjustment |
| 04/26/2001 | DE19949166A1 Stabilization device for eccentric ring of radial piston pump has additional circular guide for shaft of ring or pump frame, offset relative to central axis of eccentric |
| 04/24/2001 | US6220833 Elimination of inlet valve for ABS pump |
| 04/24/2001 | US6220760 Three-ring needle bearing |
| 04/24/2001 | US6220144 Extended slipper for hydrostatic pump and motor rotating cylinders |
| 04/19/2001 | WO2001027472A1 Adjusting device of a swash-plate piston engine |
| 04/19/2001 | DE19951211A1 Axial piston pump for producing vertical movement of a piston axially moves the piston in an oscillating manner via the fixed connection of the piston to the guide groove by guiding |
| 04/19/2001 | DE19947321A1 Axial piston machine has a supporting part fixed to a bearing surface of a housing using screws arranged longitudinally with respect to the rotating axis and screwed into a threaded bore |
| 04/19/2001 | DE19926993C2 Doppel-Axialkolbenmaschine Double-axial piston |
| 04/19/2001 | DE10047166A1 Pump unit has centre part connected to pump housing and forming pair of inlet and outlet channels connected to those of hydraulic pump and producing connecting channel to connect with ends of loading channel |
| 04/19/2001 | DE10043451A1 Swivel inclined axes hydraulic unit for proportional regulation has proportional magnetic fluid valve connected to computer and to control piston to control fluid pressure and cylinder block |
| 04/18/2001 | EP1092870A2 Variable displacement piston pump/motor |
| 04/17/2001 | US6217289 Axial piston pump with auxiliary pump |
| 04/12/2001 | DE19948447A1 Radial piston pump, preferably for controlled braking systems, has corrugated pretensioning ring on one side elastically supported on pump casing or motor and on other side elastically acting upon coupling element connecting pistons |
| 04/12/2001 | DE19948445A1 Six piston pump for use with automatic braking systems with pistons in star formation with facing pairs linked by coupling rings |
| 04/12/2001 | CA2321339A1 Variable displacement piston pump/motor |
| 04/11/2001 | EP1091170A2 A steam-raising system |
| 04/11/2001 | EP1091119A2 Swash plate tyre pump |
| 04/11/2001 | EP1090230A1 Piston pump |
| 04/11/2001 | EP1090229A1 Device for adjusting hydraulic equipment |
| 04/11/2001 | EP1090228A1 Piston pump |
| 04/11/2001 | EP1090227A1 Eccentric system |
| 04/11/2001 | EP1090226A1 Dual pump unit |
| 04/11/2001 | EP1089902A1 Piston pump |
| 04/11/2001 | EP0746682B1 Hydraulic axial piston machine |
| 04/11/2001 | CN1291255A Axial piston motor |
| 04/10/2001 | US6213729 Suction-throttled pump |
| 04/10/2001 | US6212999 Automatic throat packing torque clip |
| 04/10/2001 | US6212998 Packings on pump rod |
| 04/10/2001 | US6212994 Positive displacement rotary machine |
| 04/04/2001 | EP0956429A4 Piston assembled from a metal and a ceramic part |
| 04/03/2001 | US6210129 High-pressure pump for a fuel injection device of an internal combustion engine |
| 04/03/2001 | US6210127 Fuel pump |
| 04/03/2001 | US6210124 Variable swash plate compressor |
| 03/28/2001 | EP0770181B1 Hydraulic pumping device |
| 03/28/2001 | CN1063829C Gas-supply pump |
| 03/27/2001 | US6206663 Piston pump |
| 03/27/2001 | US6206650 Variable axial piston displacement machine with maximized swivel angle |
| 03/27/2001 | US6206649 Process and apparatus for pressurizing fluid and using them to perform work |
| 03/21/2001 | CN1288113A Bent shaft type hydraulic pump and single piece vibration seat type stroke adjusting device for variable motor |
| 03/20/2001 | US6203283 Single piece yoke stroking device for bent axis type hydraulic pumps and variable motors |
| 03/20/2001 | US6202538 Radial piston pump |
| 03/15/2001 | DE19939130A1 Axialkolbentriebwerk mit einem stufenlos verstellbaren Kolbenhub With a continuously variable axial piston stroke |
| 03/15/2001 | DE10039169A1 Fuel pump has a surface hardening layer containing either a nitrided layer, a carburized layer and quenched layer or a carbonitrided layer, and a metal compound layer formed on the surface hardening layer |
| 03/15/2001 | DE10008965A1 One-piece stroke adjuster for hydraulic pumps has one-piece pivotable yoke rotatably mounted in housing, supporting cylinder block fitting with trough bearing section, opposing arms |
| 03/14/2001 | CN2423424Y Portable electric pressure testing pump |
| 03/14/2001 | CN1287228A Ball socket joint for servo piston driving for cambered axle type hydraulic equipment |
| 03/13/2001 | US6200114 Variable flow pump |
| 03/13/2001 | US6200109 Electromotor/pump assembly |
| 03/08/2001 | WO2001016509A1 Swash plate angle control mechanism of hydraulic continuously variable transmission |
| 03/08/2001 | DE19939131A1 Axialkolbentriebwerk mit einem stufenlos verstellbaren Kolbenhub With a continuously variable axial piston stroke |
| 03/08/2001 | DE19938504A1 Einzylinder-Hochdruckpumpe Single-cylinder high-pressure pump |
| 03/08/2001 | DE19938046A1 Hohlkolben für eine Kolbenmaschine und Verfahren zum Herstellen eines Hohlkolbens Hollow piston for a piston machine and method for manufacturing a hollow piston |
| 03/08/2001 | DE10008970A1 Adjustable inclined axis hydraulic unit with swivel yoke; has swivel yoke mounted in casing and pivot control device connected to yoke with casing having at least one servo bore for servo piston |
| 03/07/2001 | EP1080866A1 Positive displacement extrusion of viscous material |
| 03/07/2001 | EP1080310A1 A digital pump |
| 03/07/2001 | CN1286742A Hydraulic pump |
| 03/06/2001 | US6196812 Pump unit for a hydraulic brake system |
| 03/06/2001 | US6196109 Axial piston pump and improved valve plate design therefor |
| 02/28/2001 | EP1079107A2 Fuel pump with accumulator |
| 02/28/2001 | EP1078164A1 Axial piston pump |