| Patents for F03C 1 - Reciprocating-piston liquid engines (2,799) |
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| 06/12/1991 | CN1052172A Hydraulic motor with constant-stress rolling track and radial spherical pistons |
| 06/05/1991 | EP0430789A1 Rotary machine with rolling piston |
| 05/29/1991 | CA2029796A1 Rotary machine with a rolling piston |
| 05/22/1991 | EP0428406A1 Reciprocating actuator |
| 05/07/1991 | US5012724 Radial piston hydraulic motor of variable cylinder capacity |
| 05/02/1991 | WO1991005966A1 Hydraulic circuit for limiting the torque of a hydrostatic hydraulic motor connected in closed circuit to a hydraulic pump |
| 04/30/1991 | US5011377 Swash-plate type piston pump motor |
| 04/10/1991 | EP0421834A1 Process for depositing an amorphous, inorganic, protective coating on an organic polymer substrate |
| 04/10/1991 | EP0421616A2 Hydraulic device |
| 04/10/1991 | EP0420995A1 Hydraulic motor equipped with reduction gear |
| 03/27/1991 | CN1012211B Hydraulic energy exchanger |
| 03/27/1991 | CN1012198B Rotary piston and barrel machine with fixed centering toggle type joint |
| 03/26/1991 | US5001964 Pressurized fluid mechanism with two cubic capacities and closed circuit applying same |
| 03/21/1991 | DE3929375A1 Flow control for radial piston motor - incorporates throttle element in control valve |
| 02/12/1991 | US4992034 Low-speed, high-torque gerotor motor and improved valving therefor |
| 01/23/1991 | EP0409084A2 Bent axis type variable displacement hydraulic machine |
| 01/22/1991 | US4986328 Tire mounting device |
| 01/08/1991 | US4983099 Torque-velocity control for variable displacement hydraulic motor |
| 01/01/1991 | US4981423 Hydraulic motor with wobble-stick and brake assembly |
| 12/12/1990 | EP0401408A1 Radial-piston machine |
| 12/05/1990 | CN1047551A Power transmission |
| 11/28/1990 | EP0399387A2 Rotary vane machine |
| 11/22/1990 | DE4010214A1 Reciprocating engine actuated by pressure pulses - which are generated by electric discharge in dielectric fluid |
| 11/07/1990 | EP0396328A1 A pump/motor control mechanism |
| 11/07/1990 | CN1046779A Low-speed, high-torque gerotor motor and improved valving therefor |
| 11/07/1990 | CN1046778A Apparatus for controlling volume of pumps or motor |
| 11/01/1990 | WO1990012970A1 Hydraulic motor equipped with reduction gear |
| 10/31/1990 | EP0394821A2 Valve for gerotor motor |
| 10/16/1990 | US4963080 Rotary hydraulic vane machine with cam-urged fluid-biased vanes |
| 10/10/1990 | EP0391097A1 Device for controlling the operation of hydraulic engines |
| 10/03/1990 | EP0389644A1 Variable capacitance, oblique spindle type hydraulique machine |
| 10/03/1990 | CA2012510A1 Apparatus for controlling the operation of hydraulic motors |
| 09/05/1990 | CN1009478B Crankshaft-type axial piston pump or motor |
| 09/04/1990 | US4953426 Housing support for hydraulic displacement unit swashplate |
| 08/29/1990 | EP0384335A1 Rotary hydraulic machine |
| 08/28/1990 | US4951551 Variable displacement hydraulic motor |
| 08/07/1990 | US4945725 Differential-area piston type mixed-phase motors |
| 08/01/1990 | EP0379501A1 Axial piston motor, reversible as a pump, with modular multiple piston chambers |
| 07/11/1990 | EP0377047A1 Main bearing device for motor of bent axis type axial piston pump |
| 06/28/1990 | WO1990007059A1 Hydraulic motor or pump with constant clamping force between rotor and port plate |
| 06/19/1990 | US4934251 Hydraulic motor or pump with constant clamping force between rotor and port plate |
| 06/16/1990 | CA2002487A1 Hydraulic motor or pump with constant clamping force between rotor and port plate |
| 06/14/1990 | WO1990006443A1 A machine for transforming pressure or potential energy of a fluid into mechanical work |
| 05/02/1990 | CN1007833B Rotary fluid energy conversion device |
| 05/01/1990 | US4920860 Device for biasing a cylinder drum of a variable-displacement axial piston machine against an associated slide valve member |
| 04/25/1990 | EP0365420A1 Dual-capacity mechanism driven by pressurised fluid, and its use in a closed circuit |
| 04/24/1990 | US4918918 Variable displacement piston machine |
| 04/19/1990 | WO1990004101A1 Variable capacitance, oblique spindle type hydraulique machine |
| 04/18/1990 | EP0213154B1 Rotary motion fluid apparatus |
| 04/12/1990 | DE3827365A1 Hydraulischer axialkolbenmotor Hydraulic axial piston motor |
| 03/27/1990 | US4911064 Piston and barrel machine with fixed centering toggle type joint |
| 03/27/1990 | US4911063 Hydraulically operated swash-plate apparatus |
| 03/21/1990 | EP0358729A1 Apparatus for mounting tyres. |
| 02/28/1990 | CN1006999B Rotary fluid energy converter |
| 02/27/1990 | US4903545 Hydrostatic transmission center section |
| 02/22/1990 | WO1990001637A1 Hydraulic axial-piston engine |
| 02/21/1990 | CN1006925B Multipurpose fluid drive piston pump |
| 02/13/1990 | US4899957 Air borne craft, for example helicopter, and related devices |
| 02/06/1990 | US4898076 Multiple cylinder-capacity pressurized fluid (motor or pump) mechanism |
| 01/16/1990 | US4893549 Adjustable axial piston machine having a bent axis design |
| 12/20/1989 | EP0099372B1 Hydraulic radial piston machines |
| 12/13/1989 | CN1006081B Variable hydraulic machinery and hydraulic transmission of stepless variable drive |
| 11/30/1989 | WO1989011593A1 Main bearing device for motor of bent axis type axial piston pump |
| 11/23/1989 | EP0342751A1 Radial piston hydraulic motor of variable cylinder capacity |
| 11/08/1989 | CN1005742B Rotary fluid pressure device having free-wheeling capability |
| 11/01/1989 | CN1036812A Positive displacement pump or motor utilizing self-lubricated bearing |
| 10/24/1989 | US4875403 Variable displacement port plate |
| 10/12/1989 | DE3910072A1 Hydraulic motor for the drive wheel of means of transport |
| 10/11/1989 | EP0336918A1 Method for controlling a hydrostatic machine, particularly an axial piston machine |
| 09/27/1989 | EP0334655A1 Anti-leak seal for motor pump |
| 09/20/1989 | EP0333624A1 Selfpowered hydraulic motor |
| 09/20/1989 | EP0333469A1 Hydraulic flow system |
| 09/05/1989 | US4862789 Positive displacement pump or motor utilizing a self-lubricated bearing |
| 08/09/1989 | EP0327012A2 Variable speed pressure energy translating device with an arcuate reinforced polymer bearing |
| 08/01/1989 | US4852463 Axial piston machines whose pistons are formed as stepped pistons |
| 07/27/1989 | WO1989006604A1 Apparatus for mounting tyres |
| 07/13/1989 | DE3744626A1 Hydraulic adjusting motor |
| 07/11/1989 | US4846046 Hydraulic drive circuit system |
| 07/04/1989 | US4843950 Adjustable axial piston machines |
| 06/06/1989 | CA1255187A1 Rotary motion fluid apparatus |
| 05/23/1989 | CA1254523A1 Slant plate type hydraulic device |
| 05/11/1989 | DE3737105A1 Pressure intensifier with two separate pressure-medium circuits |
| 04/26/1989 | EP0204835B1 Hydraulic swashplate unit with unitary bearing retainer |
| 04/25/1989 | US4824338 Pump arrangement which includes axially extending cylindrical ring noses on coned rings with a centering ring and seal ring radially of the face wherein two of the ring nose are oppositionally directed and laid together |
| 04/18/1989 | US4822255 Pump for pressures exceeding one thousand atmospheres by the provision of a half-pressure chamber around a high pressure chamber between coned ring elements |
| 04/12/1989 | EP0253852A4 Hydraulic rotary actuator utilizing rotation generated centrifugal head. |
| 04/05/1989 | EP0203071B1 Hydrostatic diagonal piston pump or diagonal piston engine |
| 04/05/1989 | CN1032222A Rotary piston and barrel machine with fixed centering toggle type joint |
| 04/04/1989 | US4818196 Variable capacity vane-type motor having a control channel selectively communicating with the work chamber |
| 03/29/1989 | EP0308508A1 Variable-capacity piston machine |
| 03/21/1989 | US4813340 Rotary fluid energy translating device |
| 03/09/1989 | WO1989002032A1 Axial piston motor, reversible as a pump, with modular multiple piston chambers |
| 03/08/1989 | EP0305548A1 Variable-capacity hydraulic motor |
| 03/08/1989 | EP0305408A1 Hydromechanical drive |
| 03/02/1989 | DE3825864A1 Drehende kolben-versetzungseinrichtung Rotating-piston device dislocation |
| 03/01/1989 | EP0110910B1 Hydrostatic transmission comprising radial piston pump and motor |
| 02/28/1989 | US4807519 Piston machine with changeable displacement |
| 02/08/1989 | EP0302786A1 Rotating machine with pistons and barrel with a fixed centering toggle type joint |
| 01/25/1989 | EP0300274A1 Axial-pistons machine with differential pistons |
| 01/24/1989 | US4799419 Wear resistant and friction resistant blocks |