| Patents for F04B 1 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (10,723) |
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| 11/12/1992 | DE4212931A1 Radial piston pump assembly - has discharge valve element with grooved seat |
| 11/12/1992 | DE4115257A1 Rotary piston machine with radial cylinder bores - uses guide ring and slotted couplings to control pistons |
| 11/11/1992 | EP0512138A1 High pressure water pump for purified water |
| 10/21/1992 | EP0509724A1 Power transmission |
| 10/21/1992 | CN2119511U Swashplate-conical plunger-type coaxial pump |
| 10/20/1992 | US5156531 Radial piston pump |
| 10/19/1992 | CA2066023A1 Power transmission |
| 10/15/1992 | WO1992017705A1 Variable capacity swash plate type refrigerant compressor having a double fulcrum hinge mechanism |
| 10/15/1992 | DE4204631A1 Radial piston pump for vehicle anti-lock braking system - has needle bearing with rimmed deep drawn metal outer ring |
| 10/13/1992 | CA1308607C Low noise pump assembly |
| 10/11/1992 | WO1992018769A1 Radial pump |
| 10/11/1992 | CA2106201A1 Radial pump |
| 10/01/1992 | WO1992016774A1 Wobble bearing |
| 10/01/1992 | WO1992016721A1 A kinematic motion assembly with reciprocating relative motion |
| 09/24/1992 | DE4109095A1 Adjustable axial piston swash plate pump - has arrangement of elastic element to allow movement of swash plate bearing block |
| 09/23/1992 | EP0504780A1 Piston for a hydrostatic axial and radial pistonmachine and method for constructing such a piston |
| 09/23/1992 | CN1018377B Apparatus for controlling volume of pumps or motor |
| 09/17/1992 | DE4205859A1 Taumellagerung Swash storage |
| 09/16/1992 | EP0503298A1 High pressure cleaning apparatus |
| 09/16/1992 | CN1018277B Hydraulic motor with constant-stress rolling track and radial spherical pistons |
| 09/08/1992 | US5145339 Pulseless piston pump |
| 09/08/1992 | CA1307163C Rotary machine with pistons and drum and fixed center spherical joint |
| 09/03/1992 | WO1992014531A1 Distillation |
| 09/02/1992 | EP0500825A1 Reciprocating pump. |
| 09/02/1992 | EP0500540A1 Device for adjusting the relative angle of rotation of a shaft to a drive wheel, especially the camshaft of an internal combustion engine. |
| 08/26/1992 | EP0499961A2 Swash-plate plunger-type hydraulic device |
| 08/26/1992 | EP0499951A2 Swash-plate plunger-type hydraulic device |
| 08/26/1992 | CN2114041U Double-acting booster water-filling pump |
| 08/20/1992 | WO1992014056A1 Radial-piston pump |
| 08/19/1992 | CN1063741A Radial piston engine |
| 08/18/1992 | US5138932 Pump/motor control mechanism |
| 08/12/1992 | EP0436593B1 Axial piston hydrostatic machine with variable displacement |
| 08/11/1992 | US5136931 Rotary type fluid energy convertor |
| 08/04/1992 | US5135362 Hydraulic axial piston pump |
| 07/30/1992 | DE4102364A1 Piston pump unit - has stepped piston forming two working chambers |
| 07/23/1992 | WO1992012344A1 Positive displacement pumps |
| 07/23/1992 | DE4200576A1 High pressure device for fluid flow machines - has piston 'shoe' running within chamber to support high pressure piston and withstand buckling |
| 07/22/1992 | EP0495146A1 Variable displacement fluid pump with improved wideband neutral |
| 07/21/1992 | US5131818 High-pressure water pump having a polyetheretherketone cylinder bushing for pure water |
| 07/15/1992 | EP0494236A1 Improved fluid-working machine. |
| 07/14/1992 | US5129797 Equal velocity universal joint and axial piston pump motor device using the joint |
| 07/14/1992 | US5129791 Variable capacity vane compressor controllable by an external control signal |
| 07/14/1992 | CA1304985C Rotary piston and barrel machine with fixed centering toggle type joint |
| 07/08/1992 | EP0486556A4 Pulseless piston pump |
| 07/08/1992 | EP0277253B1 Hydraulic pump control unit |
| 07/08/1992 | CN1017367B Positive displacement pump or motor utilizing self-lubricated bearing |
| 07/07/1992 | US5127805 Pump with reverse flow capability and system |
| 07/02/1992 | DE4041126A1 Hydrostatic gear with pump and motor in gear housing - has two groups of pistons, with tapered washers, plate cams and cylindrical drums |
| 07/01/1992 | EP0492928A1 Method and apparatus for fluid flow control |
| 07/01/1992 | EP0491809A1 Radial piston pump. |
| 07/01/1992 | CN1062404A Multi-stage cascaded, open-loop, axial plunger pump |
| 06/25/1992 | WO1992010677A1 A radial piston motor or pump |
| 06/25/1992 | WO1992010676A1 A radial piston motor or pump |
| 06/25/1992 | DE4041800A1 Two-cylinder pump with chambers interconnectable by valve - allows pistons to perform induction and pressure strokes alternately with fluid circulating without consumption of power |
| 06/25/1992 | DE4040705A1 Fitting piston in radial engine - involves use of bearing head enclosed in sleeve |
| 06/25/1992 | DE4040413A1 Axial piston machine of swashplate type |
| 06/25/1992 | CA2098103A1 Radial piston motor or pump |
| 06/24/1992 | EP0491398A1 Radial piston engine |
| 06/23/1992 | US5123815 Fluid pumping apparatus with load limiting control |
| 06/20/1992 | CA2057933A1 Radial piston engine |
| 06/17/1992 | EP0489803A1 Reversible variable displacement hydraulic device |
| 06/16/1992 | US5122037 Manual displacement control |
| 06/11/1992 | CA2098104A1 Radial piston motor or pump |
| 06/10/1992 | EP0489164A1 Continuously variable capacity type swash plate compressor |
| 06/02/1992 | US5117634 Apparatus for controlling the operation of hydraulic motors |
| 05/29/1992 | WO1992008892A1 A method in a radial piston eccentric motor/pump and a corresponding radial piston eccentric motor/pump |
| 05/27/1992 | EP0487394A1 Pressurised fluid mechanism having a specific arrangement of the fluid supply ports of the cylinders |
| 05/27/1992 | EP0487393A1 Pressurised fluid mechanism of the rotary cam type |
| 05/27/1992 | EP0486556A1 Pulseless piston pump. |
| 05/26/1992 | US5115890 Pressure fluid mechanism such as a motor or a pump coupled to a braking device |
| 05/26/1992 | CA1301543C Control device for a pump with adjustable flow |
| 05/21/1992 | DE4135904A1 Kolbenpumpe, insbesondere radialkolbenpumpe Piston pump, particularly radial piston pump |
| 05/19/1992 | US5114321 Fluid displacement apparatus with traveling chambers |
| 05/19/1992 | US5114263 Joint having ball and shaft coupled through plastic deformation |
| 05/19/1992 | US5114261 Swashplate type hydraulic device having a ball joint connection |
| 05/14/1992 | WO1992008051A1 Piston pump, especially a radial piston pump |
| 05/13/1992 | EP0484762A1 Twin piston, commutator motor driven, high pressure pump for hydrocleaning equipment |
| 05/12/1992 | US5111789 Method for controlling torque of a pump |
| 05/07/1992 | DE4035139A1 Eccentric shaft slide piece - has equalising ring with spars, and rotary cam |
| 05/07/1992 | DE4034766A1 Assembly of shoes onto pistons of axial piston pump - involves closing shoe cup onto ball end in one operation by pressure of orbital rollers |
| 05/01/1992 | CA2028900A1 Method of adapting a pump having multiple co-planar reciprocating pistons disposed in cylinders radially spaced around a central shaft |
| 04/29/1992 | CN2103025U Two inclined plate large flow plunger-type fuel pump |
| 04/28/1992 | US5108268 Pumps |
| 04/21/1992 | US5105723 Swash plate type axial piston pump |
| 04/09/1992 | DE4039926A1 Axial-flow pump with pistons actuated by swahs plate |
| 04/08/1992 | EP0478675A1 A loading machine equipped with a first and a second pump supplying pressure oil to at least one hydraulically driven working component, such as a hydraulic piston-cylinder device or hydraulic motor. |
| 04/01/1992 | CN1016086B Vertical reciprocating pump |
| 03/31/1992 | US5100305 Reciprocating piston pump |
| 03/31/1992 | US5099750 Piston mechanism for a piston unit |
| 03/25/1992 | EP0476450A1 Axial piston pump, particularly for water high-pressure cleaner |
| 03/19/1992 | WO1992004216A1 Reciprocating pump |
| 03/17/1992 | US5095807 Axial piston machine of the swashplate type with radial motion of tilt axis |
| 03/17/1992 | CA1297342C Radial piston pump and motor |
| 03/10/1992 | US5094145 Hydraulic pump or motor with rotary cylinder barrel |
| 03/10/1992 | US5094144 Bent axis type variable displacement hydraulic machine |
| 02/26/1992 | EP0471887A1 Piston machine with desmodromically guided parts |
| 02/25/1992 | US5090295 Radial piston engine |
| 02/19/1992 | EP0471451A1 Reciprocating piston device |
| 02/19/1992 | EP0471098A1 Hydraulic piston apparatus |
| 02/11/1992 | US5086689 Axial piston machine |