| Patents for F04B 1 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (10,723) |
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| 06/11/1985 | US4522566 Adjustable axial piston pumps with reglating units and regulating units for the same |
| 06/11/1985 | US4522110 Hydraulic radial piston motor |
| 06/05/1985 | EP0143521A2 Pump having piston and cylinder rotatable respectively about spaced axes transverse to the reciprocating axis |
| 06/04/1985 | CA1188152A1 Variable volume hydraulic pump |
| 05/28/1985 | US4519300 Filled piston with central oil tube |
| 05/21/1985 | US4518322 Arrangement for regulating a supply flow and for limiting a supply pressure of an adjustable pump |
| 05/15/1985 | EP0141216A1 Servo control device for a hydro machine |
| 05/14/1985 | US4516784 Seal assembly with radially undulated sealing element |
| 05/14/1985 | US4516475 Hydrostatic piston machine |
| 05/07/1985 | US4515067 Adjustable axial piston machines |
| 04/30/1985 | US4513630 For converting rotary motion into a rectilinear to-and-fro motion |
| 04/23/1985 | US4512723 Pressure limiter |
| 04/03/1985 | EP0136220A1 Pump system for chromatography in the liquid phase |
| 04/02/1985 | US4508011 Hydraulic axial piston machine |
| 04/02/1985 | US4508010 Hydraulic motor |
| 03/27/1985 | EP0135068A1 Failure detection system for hydraulic pumps |
| 03/26/1985 | US4507058 Wobble plate pump and drive mechanism therefor |
| 03/20/1985 | EP0134211A1 Pumping device for hydraulic plants. |
| 03/19/1985 | US4505652 Spherical piston pump |
| 03/05/1985 | CA1183404A1 Arrangement for slipper cavitation erosion control and impact reduction |
| 02/19/1985 | US4500261 Pump means for pumping a mixture of coarse-grained material and fluid |
| 02/12/1985 | US4498846 Stroke control valve |
| 02/12/1985 | US4498372 Pump with ring retained floating wrist pins and connecting rods |
| 02/12/1985 | CA1182340A1 Radial piston motor or pump |
| 01/29/1985 | US4496289 Device for controlling and/or measuring operational parameters of an axial piston machine |
| 01/22/1985 | US4494911 Piston pump servo control |
| 01/09/1985 | EP0130912A1 Swash plate mechanism, especially for the drive of a pump |
| 01/09/1985 | EP0130703A1 Method of manufacturing a die cast wobble plate assembly |
| 01/09/1985 | EP0130235A2 Apparatus for producing ultrahigh pressure water jet |
| 01/08/1985 | US4492524 Multiple piston pump with a constant discharge capacity |
| 01/02/1985 | EP0129670A2 Piston pump servo control |
| 12/27/1984 | EP0129097A2 Stroke control valve for a radial piston pump |
| 12/25/1984 | US4489642 Method and apparatus for reducing operating noise in axial piston pumps and motors |
| 12/25/1984 | US4489641 Rotor bush assembly in fluid machines |
| 12/25/1984 | US4489552 Automatic neutral point detecting system for hydraulic pump |
| 12/11/1984 | US4487109 Electro-hydraulic control system for a power drive unit |
| 12/04/1984 | US4486152 Pump with spring loaded valve |
| 11/20/1984 | US4483663 Output speed droop compensating pump control |
| 11/13/1984 | US4481867 Axial plunger pump or motor |
| 11/13/1984 | CA1177725A1 Torque and high pressure limiting control for variable displacement pumps |
| 11/06/1984 | CA1177327A1 Power steering pump |
| 10/30/1984 | US4479420 Anti friction means in pivot means preferably in radial piston pumps, _motors or transmissions |
| 10/30/1984 | CA1177037A1 Swash plate compressor |
| 10/24/1984 | EP0122352A1 Capacity control means for hydraulic positive-displacement machines |
| 10/23/1984 | US4478557 Hydraulic power transducer |
| 10/23/1984 | US4478136 Electrohydraulic control arrangement for hydrostatic machine |
| 10/23/1984 | US4478134 Swash plate type hydraulic device |
| 10/23/1984 | US4478130 Arrangement for slipper cavitation erosion control and impact reduction |
| 10/09/1984 | US4475870 Hydraulic arrangement |
| 10/09/1984 | US4475443 Axial piston machine with suction line impurity trap |
| 09/11/1984 | US4470760 Fuel pumping apparatus |
| 09/04/1984 | USRE31657 Feedback mechanism for variable displacement hydraulic device having an electrohydraulic controller |
| 09/04/1984 | US4469012 Pressurized fluid mechanism comprising reaction rollers mounted on pistons |
| 08/29/1984 | EP0116832A1 Method and apparatus for reducing operating noise in axial piston pumps and motors |
| 08/28/1984 | US4468174 Helicopter transportable mud pump |
| 08/21/1984 | US4466338 Oblique-shaft axial piston machine having a follower plate for the cylinder drum |
| 08/14/1984 | US4465394 Ball-jointed bearing arrangement of the piston heads in an axial piston machine |
| 08/14/1984 | US4464979 Drive flange swash plate machines |
| 08/10/1984 | EP0108746A4 Filled piston with central oil tube. |
| 08/08/1984 | EP0044313B1 Piston machine |
| 07/18/1984 | EP0113366A1 Axial piston pump |
| 07/10/1984 | US4458581 In a variable volume pump |
| 06/27/1984 | EP0112267A1 Servo control variable displacement pressure compensated pump |
| 06/27/1984 | EP0111619A1 Spherical gear pump |
| 06/26/1984 | US4456434 Power transmission |
| 06/26/1984 | US4456430 Vehicle employing a fluid motor with arrangements |
| 06/26/1984 | US4455920 Rocker cam control |
| 06/19/1984 | US4455125 Rotating cylinder fluid pressure device |
| 06/19/1984 | US4455028 Sealing device with radially slitted metal washers for hydraulic piston mechanisms |
| 06/19/1984 | US4454802 Piston assembly for a fluid mechanism with reaction plate, complete with slipper block |
| 06/13/1984 | EP0059712A4 Improved load-plus valve for variable displacement pumps. |
| 06/12/1984 | US4453898 Dual-piston reciprocating pump assembly |
| 06/12/1984 | US4453300 Method of manufacturing a swash plate assembly |
| 06/05/1984 | US4452127 Anti-friction means in pivot means in radial piston pumps, motors or transmissions |
| 05/30/1984 | EP0025790B1 Fluid pressure machines |
| 05/29/1984 | US4451211 Radial piston compressor and drive motor coupling arrangement |
| 05/29/1984 | EP0059710A4 Multiple pump system with horsepower limiting control. |
| 05/29/1984 | CA1168132A1 Horsepower consumption control for variable displacement pumps |
| 05/23/1984 | EP0108746A1 Filled piston with central oil tube. |
| 05/22/1984 | US4449445 Variable displacement fluid energy translating device |
| 05/22/1984 | US4449444 Axial piston pumps |
| 05/01/1984 | US4445825 Radial piston machine |
| 05/01/1984 | US4445258 Method of sealing interfaces of bearing surfaces to steel barrels of piston pumps |
| 04/27/1984 | EP0060247A4 Unloading means for flow-pressure compensated valve. |
| 04/27/1984 | EP0059709A4 Torque and high pressure limiting control for variable displacement pumps. |
| 04/27/1984 | EP0059708A4 Horsepower consumption control for variable displacement pumps. |
| 04/24/1984 | US4444093 Slant plate type hydraulic device |
| 04/24/1984 | US4444092 Hydraulic pump |
| 04/18/1984 | EP0105523A1 Automatic neutral point detecting system for hydraulic pump |
| 04/17/1984 | US4443160 High-pressure piston pump for liquids, preferably for water |
| 04/03/1984 | US4440067 Hydrostatic actuator |
| 04/03/1984 | CA1164725A1 Displacement control for a hydraulic pump or motor with failure override |
| 03/20/1984 | US4437817 Two cylinder viscous material pump |
| 03/20/1984 | US4437816 Variable volume positive displacement rotary pump |
| 03/15/1984 | WO1984001003A1 Pumping device for hydraulic plants |
| 03/14/1984 | EP0102915A2 Radial-piston hydraulic engine |
| 03/14/1984 | EP0102441A2 Pump or motor engine having conical ring elements |
| 03/13/1984 | US4436491 Method of supplying hydraulic operating fluid in diaphragm type |
| 03/13/1984 | US4435992 Adjusting device for axial and radial piston machines |
| 03/06/1984 | US4434709 Axial piston pump |