| Patents for F04B 1 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (10,723) |
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| 02/28/2001 | CN1285898A Piston pump for high-pressure cleaning device |
| 02/27/2001 | US6193481 Piston pump |
| 02/22/2001 | WO2001012989A1 Axial-piston drive system with a continuously adjustable piston stroke |
| 02/22/2001 | WO2001012988A1 Axial piston drive mechanism with a continuously adjustable piston stroke |
| 02/22/2001 | DE19939739A1 Hydraulic axial piston pump/motor has an opening plate with longitudinal and curved suction and outflow slits with a deflection of the hydraulic fluid in a curved passage at the cover plate for low operating noise |
| 02/21/2001 | EP0868609B1 Low noise hydraulic pump with check valve timing device |
| 02/21/2001 | CN1284604A Improvement of high-pressure pump for supplying oil to internal combustion engine |
| 02/15/2001 | WO2001011237A1 Piston assembly |
| 02/15/2001 | WO2001011236A1 Fluid pump for medicaments |
| 02/15/2001 | WO2001011235A1 Radial piston pump |
| 02/15/2001 | WO2001011214A1 Piston engine balancing |
| 02/15/2001 | DE19937613A1 Radialkolbenpumpe Radial piston pump |
| 02/15/2001 | DE19936662A1 Axialkolbenpumpe Axial piston pump |
| 02/14/2001 | EP1076181A2 Hollow piston for a piston machine |
| 02/14/2001 | EP1076180A2 Fuel pump |
| 02/14/2001 | EP1076174A2 Single cylinder high pressure pump |
| 02/14/2001 | EP1075599A1 Axial piston variable displacement machine |
| 02/14/2001 | CN1283748A Single rotor expansion press able to replace two-phase flow throttle valve |
| 02/14/2001 | CN1283743A Volume variable compressor |
| 02/13/2001 | USRE37049 Axle driving apparatus |
| 02/13/2001 | US6186748 Axial piston pump |
| 02/13/2001 | US6186747 Axial plunger slurry pump |
| 02/13/2001 | US6185956 Single rotor expressor as two-phase flow throttle valve replacement |
| 02/08/2001 | DE10025424A1 Radial piston pump for hydraulic braking system with antilock function, has input and output valves formed with cup-shaped sealing sections and which regulate fluid flow through ports and pump chamber |
| 02/07/2001 | EP1074734A2 Axial piston pump |
| 02/06/2001 | US6183225 Angled flow ports for reciprocating piston pump |
| 02/06/2001 | US6183212 Snap-in connection for pumping plunger sliding shoes |
| 02/06/2001 | US6183207 Digital pump |
| 02/01/2001 | WO2001007785A2 Ball-and-socket joint between a slipper and a piston |
| 02/01/2001 | WO2001007757A2 Piston arrangement for a piston engine |
| 02/01/2001 | WO2001007201A1 Hollow piston for a piston engine and method for producing a hollow piston |
| 02/01/2001 | DE19934218A1 Verfahren zum Herstellen einer Kugelgelenkverbindung zwischen einem Gleitschuh und einem Kolben und eine solche Kugelgelenkverbindung A method of manufacturing a ball-joint connection between a sliding block and a piston, and such a ball and socket connection |
| 02/01/2001 | DE19934217A1 Kolbenanordnung für eine Kolbenmaschine Piston assembly for a piston engine |
| 02/01/2001 | DE19934216A1 Hohlkolben für eine Kolbenmaschine und Verfahren zum Herstellen eines Hohlkolbens Hollow piston for a piston machine and method for manufacturing a hollow piston |
| 02/01/2001 | DE19933570A1 Radial piston pump esp. for feeding fuel in injection system of combustion engine |
| 02/01/2001 | DE19706116C2 Vorrichtung zur Pulsationsminderung an hydrostatischen Verdrängereinheiten Device for pulsation of hydrostatic displacement units |
| 01/31/2001 | EP1071884A1 A hydraulic rotating axial piston engine |
| 01/31/2001 | CN1282402A Swash plates for axial piston motors |
| 01/31/2001 | CN1281945A High pressure pump with switch valve for supplying fuel to internal combustion engine |
| 01/30/2001 | US6179574 Apparatus for pressurizing fluids and using them to perform work |
| 01/30/2001 | US6179568 Piston pump and method of reducing vapor lock |
| 01/30/2001 | US6178869 Piston machine |
| 01/24/2001 | EP1070203A1 Controlled porting for a pressure transformer |
| 01/24/2001 | CN2416245Y High-pressure sealing plunger pump |
| 01/24/2001 | CN1281534A Axial piston engine |
| 01/24/2001 | CN1281533A Axial piston engine |
| 01/23/2001 | US6176692 Pump, in particular for an hydraulic wheel-slip brake control system |
| 01/23/2001 | US6176684 Variable displacement hydraulic piston unit with electrically operated variable displacement control and timing control |
| 01/23/2001 | US6176348 Multiple-pump system for lubricating |
| 01/23/2001 | US6176223 Radial piston pump for high pressure fuel delivery |
| 01/23/2001 | US6176086 Hydrostatic transmission in one housing |
| 01/23/2001 | US6176085 Hydraulic drive system |
| 01/17/2001 | EP1068450A1 Adjustable face plate for hydraulic pump or motor |
| 01/17/2001 | EP1068449A1 Pump unit for a slip-regulated hydraulic automobile brake system |
| 01/17/2001 | EP1068448A1 Radial piston pump for high-pressure fuel supply |
| 01/17/2001 | EP1068122A1 Anti-lock-up vehicle braking system |
| 01/17/2001 | EP1067975A1 Metered dose infusion pump and method |
| 01/17/2001 | EP0733164B1 Hydraulic piston engine |
| 01/16/2001 | US6174139 Axial piston machine with damping element for the inclined or wobble plate |
| 01/10/2001 | EP1067342A2 Expander-compressor as two-phase flow throttle valve replacement |
| 01/10/2001 | EP1067288A2 Thrust bearing for the swash plate of a compressor |
| 01/10/2001 | EP0766788B1 Adjustable hydrostatic radial-piston motor |
| 01/09/2001 | US6171083 Piston pump |
| 01/09/2001 | US6171070 High-pressure reciprocating pumps |
| 01/04/2001 | DE19927961A1 Determining operating revolution rate, working pressure, pivot angle for axial piston machine involves frequency analysis of detected sound in solid, liquid or air signal from machine |
| 01/04/2001 | DE19926993A1 Double axial piston machine, with first cylinder borings separated from second ones by dividing wall |
| 01/03/2001 | EP1065370A2 High-pressure pump with an on-off valve for feeding fuel to an internal combustion engine |
| 01/03/2001 | EP1065369A2 Improvements to a high-pressure pump for feeding fuel to an internal combustion engine |
| 01/03/2001 | CN2413053Y Small air compressor |
| 12/28/2000 | WO2000079144A1 Needle bearing and pump unit comprising a needle bearing |
| 12/28/2000 | DE19928480A1 Needle bearing for pump unit e.g. for slip-regulated vehicle hydraulic braking system, has outer ring with radially inward protruding edge on both ends, one to secure axial position of needles and outer ring by engaging end of inner ring |
| 12/28/2000 | DE19927826A1 Pump arrangement has suction valves opened as individual suction valves for defined periods of time during suction phases of associated pump elements |
| 12/28/2000 | DE19927454A1 Pumpenaggregat für ABS/ASR/VSC-Bremsanlage Pump unit for ABS / TCS / VSC brake system |
| 12/27/2000 | EP1063428A2 High pressure fuel pump |
| 12/27/2000 | EP1062426A2 Radial piston engine with guide rollers |
| 12/26/2000 | US6164928 Pump with openable seal |
| 12/21/2000 | WO2000077396A1 Pump aggregate for an abs/asc/vsc braking system |
| 12/21/2000 | DE19959006C1 Radial piston pump for common-rail fuel injection system for automobile engine has suction valve for one cylinder bore controlled in dependence on rotation angle of eccentric drive shaft |
| 12/21/2000 | DE19926965A1 Hydrostatic axial piston engine of swash plate construction has zero position centering unit with two function positions, dependent upon regulator unit charged with/relieved from return force |
| 12/21/2000 | DE10020453A1 Axial piston pump for hydraulic circuit in vehicle coupled to construction machinery, has several pairs of independent supply and discharge oil routes in single cylinder block for bidirectional supply and discharge |
| 12/20/2000 | EP1060334A1 Radial piston pump for fuel high pressure generation |
| 12/20/2000 | CN2411354Y Small-sized air compressor |
| 12/19/2000 | US6162030 Zero leakage valveless positive fluid displacement device |
| 12/19/2000 | US6162025 Variable displacement swash plate type compressor |
| 12/19/2000 | US6162024 Constant horsepower continuously variable volume pump |
| 12/19/2000 | US6161466 Piston pump for a vehicle brake system |
| 12/14/2000 | WO2000075516A1 High pressure pump with filler cap |
| 12/14/2000 | WO2000075515A1 High pressure pump with improved hub |
| 12/14/2000 | WO2000075514A1 High pressure pump with improved sealing |
| 12/14/2000 | WO2000075513A1 Improved high pressure pump |
| 12/14/2000 | WO2000075511A1 Swash-plate drag bearing |
| 12/14/2000 | DE19925834A1 Schrägscheiben-Schwenklager Swash plate pivot bearing |
| 12/13/2000 | EP1058783A1 Radial piston pump for supplying fuel at high pressure |
| 12/13/2000 | EP1058771A1 Axial piston motor |
| 12/13/2000 | EP0770182B1 Control plate of a hydraulic machine |
| 12/13/2000 | CN2410441Y Double return stroke piston high efficient energy-saving air conditioning compressor |
| 12/12/2000 | US6158971 Pump |
| 12/12/2000 | US6158969 Hydrostatic pump and disable control therefor |
| 12/12/2000 | CA2201987C A device with coaxial, opposite, modular pistons with double eccentric cams or similar, for floated pumps |
| 12/07/2000 | WO2000073658A1 Piston pump |