| Patents for F04B 1 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (10,723) |
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| 01/08/1998 | DE19626938A1 Star-shaped piston cylinder assembly e.g. radial piston pump |
| 01/08/1998 | DE19626407A1 High-pressure pump for fuel-injector |
| 01/07/1998 | EP0817356A1 Electric hydraulic hybrid motor |
| 01/07/1998 | EP0816676A2 Wobble-plate pump |
| 01/07/1998 | EP0816675A2 Arrangement for stabilizing the eccentric ring of a radial piston pump |
| 01/07/1998 | CN1169510A Variable displacement compressor and method for controlling same |
| 01/06/1998 | US5704274 Axial piston machine |
| 01/06/1998 | US5704272 Axial piston energy converting device |
| 01/02/1998 | DE19648319A1 Radialkolbenpumpe Radial piston pump |
| 01/02/1998 | DE19643389C1 Axial piston machine with adjustable control plate |
| 01/02/1998 | DE19625686A1 Eccentric arrangement, particularly for stroke piston pump |
| 12/30/1997 | US5701872 Vertical engine |
| 12/29/1997 | EP0813654A1 Pump for conveying a medium |
| 12/29/1997 | EP0813653A1 Pump for conveying a medium |
| 12/24/1997 | WO1997048583A1 Radial piston pump |
| 12/24/1997 | CN1168716A Control device for a variable displacement hydraulic pump |
| 12/24/1997 | CN1168715A Hydrolic pump using shape memory alloys |
| 12/24/1997 | CN1168714A Swash plate angle changing device for swash plate type piston pump/motor |
| 12/23/1997 | US5700137 Low profile positive displacement pump system |
| 12/23/1997 | US5700135 Bellows cam plate pump |
| 12/23/1997 | US5700094 Needle bearings for axial piston pumps; wear resistance |
| 12/23/1997 | US5699715 Piston for a reciprocating piston machine |
| 12/18/1997 | WO1997047883A1 High pressure pump for all liquids |
| 12/17/1997 | EP0812985A1 Rotary pump and cam ring therefor |
| 12/17/1997 | CN1167878A Straight shaft plunger mud pump |
| 12/16/1997 | US5697765 Hydraulic motor |
| 12/16/1997 | US5697678 Hydraulic unit supported in such a way as to damp vibration and forming part of a slip-controlled brake system |
| 12/16/1997 | US5697336 Engine brake for a multi-cylinder internal combustion engine |
| 12/16/1997 | US5697286 Fluid pressure unit with brake means |
| 12/11/1997 | WO1997046804A1 A ram-type mud pump |
| 12/11/1997 | DE19722495A1 Pump with adjustable throughput e.g. for vehicle |
| 12/11/1997 | DE19622864A1 Hydrostatic axial reciprocating engine |
| 12/09/1997 | CA2061727C Hydraulic pump having floating spigot valve |
| 12/04/1997 | DE19622039A1 Piston machine with a sound insulating mantle |
| 11/27/1997 | DE19620654A1 Adjustable stroke axial piston machine |
| 11/26/1997 | EP0809027A2 Reciprocating piston machine with swash plate mechanism |
| 11/26/1997 | EP0809023A2 Radial piston pump |
| 11/26/1997 | EP0808988A1 Hollow piston with a radially welded cover |
| 11/26/1997 | EP0808421A1 Adjustable hydrostatic pump |
| 11/26/1997 | EP0698183B1 Electromotor-pump assembly |
| 11/26/1997 | CN1165917A Mfg. method for enclosed shell of sealing compressor as well as sealing compressor |
| 11/20/1997 | WO1997043548A1 Hydraulic pressure control system for a pump |
| 11/20/1997 | CA2254360A1 Hydraulic pressure control system for a pump |
| 11/18/1997 | US5687631 Speed change mechanism for swash plate type hydraulic motor |
| 11/13/1997 | DE19618793A1 Radial piston rotary motor |
| 11/13/1997 | DE19618792A1 Radial piston pump or motor |
| 11/12/1997 | EP0806567A2 Apparatus for treating viscous multi-component elastomeres |
| 11/12/1997 | EP0805922A1 Aircraft hydraulic pump control system |
| 11/12/1997 | EP0805921A1 Volumetric machine with curved liners |
| 11/11/1997 | US5685215 Hydraulic piston engine driven by a lubricant-free, water-based fluid |
| 11/06/1997 | DE19716089A1 Variable displacement compressor for vehicle |
| 11/06/1997 | DE19618013A1 Piston especially for radial piston pumps in braking systems |
| 11/05/1997 | EP0804686A1 Piston pump |
| 11/04/1997 | US5683228 Oil pump cavitation relief |
| 10/30/1997 | WO1997040257A1 Swashplate pump incorporating a dual location cluster bearing |
| 10/30/1997 | DE19708922A1 Hydraulic axial piston pump for conveying fluids |
| 10/30/1997 | DE19708919A1 Axial piston pump for conveying fluids |
| 10/30/1997 | DE19708917A1 Axial piston pump for conveying fluids |
| 10/29/1997 | EP0710328B1 Continuous conveying process and device for shear-sensitive fluids |
| 10/29/1997 | CN1163351A Extended movable part for hydraulic pump and screw hydraulic cylinder of motor |
| 10/28/1997 | US5681153 Two rotor sliding vane compressor |
| 10/28/1997 | US5681149 Hydraulic pump with side discharge valve plate |
| 10/22/1997 | EP0679224B1 Hydraulic machine and method for assembling a piston and slider shoe unit |
| 10/22/1997 | CN1036218C Hydraulic drive system |
| 10/21/1997 | US5678471 Swashplate pump incorporating a dual location cluster bearing |
| 10/16/1997 | WO1997038225A1 Axial piston machine with internal flushing cycle |
| 10/16/1997 | DE19612598A1 Adjustable hydraulic machine, e.g. radial piston machine |
| 10/15/1997 | EP0681653B1 Cyclic hydraulic pump |
| 10/14/1997 | US5676035 Cam follower retainer for a swashplate pump |
| 10/09/1997 | DE19613609A1 Axialkolbenmaschine mit internem Spülkreislauf Axial piston machine with internal flushing circuit |
| 10/07/1997 | CA2019420C Apparatus for controlling the torque of an engine pump system, and a method thereof |
| 09/30/1997 | US5671653 Hydraulic axial piston machine |
| 09/25/1997 | WO1997035110A1 Piston for a hydrostatic axial-piston machine |
| 09/24/1997 | EP0796999A2 Variable displacement pump and remote control system therefor |
| 09/24/1997 | EP0796394A1 Radial piston engine |
| 09/24/1997 | EP0796154A1 Wobble-plate mounting arrangement for a high-pressure cleaning device |
| 09/23/1997 | US5669761 Discharge control apparatus of hydraulic pump for automatic transmission |
| 09/17/1997 | EP0795083A1 Fuel injection pump |
| 09/17/1997 | EP0794851A2 Motor driven hydraulic tool |
| 09/11/1997 | DE19608596A1 Radial piston pump with eccentric |
| 09/11/1997 | DE19608228A1 Axial piston hydraulic machine |
| 09/10/1997 | EP0794330A2 Cam follower retainer for a swashplate pump |
| 09/10/1997 | EP0679226B1 Hydraulic axial piston machine |
| 09/04/1997 | WO1997032111A1 Fluid machines |
| 09/04/1997 | DE19706994A1 Swash plate-axial pump with oiling mechanism |
| 09/03/1997 | EP0793018A1 Swash plate angle changing device for swash plate type piston pump motor |
| 09/03/1997 | EP0793017A2 Pump for a high pressure cleaning apparatus |
| 08/28/1997 | WO1997031185A1 Pressure transformer |
| 08/21/1997 | DE19635335C1 High pressure cleaning apparatus |
| 08/21/1997 | DE19605519A1 Radial piston fluid pump |
| 08/21/1997 | DE19605369A1 Plastics piston for corrosive fluid pump |
| 08/20/1997 | EP0790403A1 Fuel injection pump with improved shaft seal system |
| 08/20/1997 | EP0789812A1 Damped piston assembly for an anti-lock braking system pump |
| 08/19/1997 | US5659485 Discharge flow control system and method in hydraulic pump |
| 08/19/1997 | US5657681 For operating a heavy duty industrial working unit |
| 08/14/1997 | WO1997029281A1 Method and apparatus for controlling axial pump |
| 08/14/1997 | DE19604731A1 Radial piston pump for hydraulic system in vehicle |
| 08/14/1997 | CA2245790A1 Method and apparatus for controlling axial pump |
| 08/12/1997 | US5655891 For a viscous rubber-like material |
| 08/12/1997 | US5655430 Helm pump |