| Patents for F03C 1 - Reciprocating-piston liquid engines (2,799) |
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| 09/30/2004 | WO2004083648A1 Arrangement for controlling a hydraulically driven motor |
| 09/29/2004 | EP1461512A1 Apparatus and method for generating power from a flowing liquid |
| 09/22/2004 | CN2643019Y Charging type hydraulic potential energy transforming and storing engine |
| 09/22/2004 | CN2643016Y 电动缸 Electric cylinder |
| 09/15/2004 | CN2641310Y Travelling wheel transmission gear driven by radial hydraulic motor |
| 09/09/2004 | DE19527645B4 Axialkolbenmaschine in Taumelscheibenbauweise Axial piston swash plate design |
| 09/02/2004 | WO2004074637A2 Sleeve piston fluid motor |
| 09/02/2004 | US20040168435 Device for detecting failure of hydraulic motor, and hydraulic vehicle |
| 09/01/2004 | EP1451474A1 Drive |
| 09/01/2004 | CN1164866C Leakage oil return apparatus for a hydraulic motor |
| 09/01/2004 | CN1164865C Pulse width modulated deep sea water pressure-mechanical energy conversion system |
| 08/31/2004 | US6782795 Hydraulic percussion/pressing device |
| 08/25/2004 | CN2635936Y Flexible reversing mechanism for preleading preset stepless adjusting rocking-arm slide-block mechanism |
| 08/18/2004 | EP1096143B1 Hydraulic motor with brake device |
| 08/12/2004 | DE10303636A1 Hydrostatic propulsive drive with two drive motors has axial piston motors that are components of closed drive axle with central body, axial piston motor attached to both sides of central body |
| 08/11/2004 | CN1161539C Reciprocating fluid machines |
| 08/10/2004 | CA2224839C Hydraulic motor with radial propulsors retained against corresponding sliding-contact surfaces by resilient means and by mechanical-retaining means located outside said propulsors |
| 08/05/2004 | US20040152552 Radial type piston motor with speed reducer |
| 08/05/2004 | US20040148928 Rotary hydraulic machine |
| 07/28/2004 | CN1159526C Double-acting four-plunger hydraulic pump or motor |
| 07/15/2004 | US20040134194 System for vaporization of liquid fuels for combustion and method of use |
| 07/15/2004 | DE19525852B4 Axialkolben-Mikropumpe Axial piston micropump |
| 07/15/2004 | DE10017844B4 Verfahren zum Durchspülen des Gehäuses eines Hydromotors, Hydromotor und Verwendung desselben sowie Verwendung eines hydraulischen Antriebs The same method for flushing the housing of a hydraulic motor, hydraulic motor and use, and the use of a hydraulic drive |
| 07/14/2004 | EP1055068B1 A hydraulic rotating axial piston engine |
| 07/14/2004 | EP0925448B1 Hydraulic pump and hydraulic engine |
| 07/08/2004 | WO2004057156A1 Radial-piston motor |
| 07/01/2004 | WO2004033759A3 Article and method of lift energy generated by electrolysis at substantial depth |
| 07/01/2004 | WO2004031576A3 Hydraulic machine with radial cylinders |
| 07/01/2004 | US20040126245 Hydraulic pump and motor |
| 07/01/2004 | DE10260158A1 Radialkolbenmotor Radial piston engine |
| 06/30/2004 | EP1261803B1 Leakage oil return apparatus for a hydraulic motor |
| 06/29/2004 | US6755018 Leakage oil return apparatus for a hydraulic motor |
| 06/17/2004 | WO2004051085A1 Hydraulic machine |
| 06/02/2004 | CN2619064Y Shell rotary type inner curve hydraulic motor |
| 05/27/2004 | US20040101417 Volume control apparatus of radial piston pump or motor and positioning apparatus |
| 05/20/2004 | US20040096344 Simplified piston slidable in a cylinder |
| 05/19/2004 | EP1420164A2 Simplified piston slidable in a cylinder |
| 05/18/2004 | US6736048 Hydrostatic axial piston machine |
| 05/13/2004 | WO2004040132A1 Hydraulic pump or motor |
| 05/13/2004 | WO2003050396B1 Apparatus and method for generating power from a flowing liquid |
| 05/13/2004 | DE19803819B4 Fluidbetätigte Drehantriebsvorrichtung A fluid-operated rotary drive device |
| 05/11/2004 | US6733253 Hydraulic air compressor having an automatic water valve regulation mechanism |
| 05/06/2004 | EP1415088A1 Axial piston motor |
| 04/28/2004 | EP0839279B1 Axial piston micropump |
| 04/22/2004 | WO2004033886A2 System for vaporization of liquid fuels for combustion and method of use |
| 04/22/2004 | WO2004033759A2 Article and method of lift energy generated by electrolysis at substantial depth |
| 04/22/2004 | DE4206086B4 Modular aufgebautes Antriebssystem Modular Drive System |
| 04/21/2004 | EP1409196A1 Selectively cold worked hydraulic motor/pump shoe |
| 04/15/2004 | WO2004031576A2 Hydraulic machine with radial cylinders |
| 04/08/2004 | US20040065192 Radial type hydraulic machine |
| 04/07/2004 | EP1405987A1 Rankine cycle device |
| 04/06/2004 | US6715997 Housing for a rotary hydraulic unit with a servo piston |
| 04/01/2004 | WO2002057606A9 Rotary crank-rod mechanism |
| 03/25/2004 | DE10219849B4 Hydromotoreinheit Hydraulic motor unit |
| 03/16/2004 | US6705203 Extended male slipper servo pad arrangement for positioning swashplate and method assembling same |
| 03/11/2004 | US20040045290 Rotary crank-rod mechanism |
| 03/09/2004 | US6701824 Axial piston machine |
| 03/03/2004 | EP1038106B1 A hydraulic rotating axial piston engine |
| 03/02/2004 | US6698199 Swash plate type hydraulic drive transmission and hydrostatic type continuously variable transmission |
| 02/26/2004 | WO2003093677A3 Hydraulic motor for use in high-pressure environment |
| 02/26/2004 | US20040037710 Fluid machine |
| 02/19/2004 | US20040032163 Hydraulic motor device with displacement selector and a braking system |
| 02/19/2004 | DE19912984B4 Hydraulische Betätigungseinrichtung für Schwingungstestgeräte Hydraulic actuator for vibration test equipment |
| 02/12/2004 | WO2004013490A1 Buoyancy motor |
| 02/12/2004 | US20040028536 Hydraulic cam motor |
| 02/12/2004 | CA2492549A1 Buoyancy motor |
| 02/10/2004 | US6688417 Axial piston unit for integrated wheel hub |
| 02/05/2004 | WO2004011797A1 Hydraulic motor |
| 02/03/2004 | US6685358 Hydraulic motor for use in high-pressure environment |
| 02/03/2004 | US6684753 Reciprocating differential hydraulic machine, especially a differential hydraulic machine |
| 02/03/2004 | US6684635 System and method for controlling motor torque |
| 01/21/2004 | EP1382846A2 Pump particularly for hydraulic rudder control systems |
| 01/21/2004 | CN1469042A Charged hydraulic potential energy-converting and energy-storing engine |
| 01/08/2004 | US20040005230 Hydraulic air compressor having an automatic water valve reulation mechanism |
| 01/08/2004 | US20040003711 Piston assembly for a radial piston hydraulic motor |
| 01/07/2004 | CN2597697Y Hydraulic plunger variable motor regulating controller |
| 01/07/2004 | CN2597696Y Radial plunger-type hydraulic motor of end face compensation oil distributing |
| 01/01/2004 | US20040001763 Releasable locking mechanism for axial piston hydraulic pump |
| 01/01/2004 | US20040000142 High-pressure and low-pressure selecting valve and swash-plate type hydraulic motor system |
| 12/30/2003 | US6668613 Hydraulic compression tool and hydraulic compression tool motor |
| 12/16/2003 | US6663354 Hydrostatic axial piston machine with a control port, a cradle supported swashplate and a swashplate actuating piston |
| 12/16/2003 | US6662704 Apparatus and method for generating power from a flowing liquid |
| 12/10/2003 | EP1369589A2 System with a hydraulic motor having a brake |
| 12/04/2003 | US20030221551 Hydraulic device as a pump or a motor |
| 12/04/2003 | US20030221550 Hydraulic device |
| 12/03/2003 | EP1367219A1 Rotary hydraulic machine |
| 12/03/2003 | EP1366276A1 Rotary crank-rod mechanism |
| 12/02/2003 | CA2061903C Compression spring fluid motor |
| 11/26/2003 | CN2588071Y Small quantity water pumping apparatus |
| 11/26/2003 | CN2588070Y Pneumatic engine |
| 11/13/2003 | WO2003093702A1 Hydraulic motor unit |
| 11/13/2003 | WO2003093677A2 Hydraulic motor for use in high-pressure environment |
| 11/13/2003 | CA2481950A1 Hydraulic motor for use in high-pressure environment |
| 11/06/2003 | US20030205044 System and method for controlling motor torque |
| 11/05/2003 | CN2584854Y Hydraulic engine |
| 10/30/2003 | US20030202725 Hydraulic motor for use in high-pressure environment |
| 10/29/2003 | CN2583386Y Oblique axis type axial plunger motor |
| 10/29/2003 | CN1452701A Device for detection of failure of hydraulic motor, and hydraulic vehicle |
| 10/23/2003 | WO2003087579A1 Drive device for a machine in particular a pump |
| 10/23/2003 | WO2003086676A1 Hydraulic compression tool and hydraulic compression tool motor |