Patents
Sitemap › F03 - Machines or engines for liquids; Wind, spring, or weight motors; Producing mechanical power or a reactive propulsive thrust, not otherwise provided for › F03C - Positive-displacement engines driven by liquids › F03C 1 - Reciprocating-piston liquid engines
Patents for F03C 1 - Reciprocating-piston liquid engines (2,799)
10/2003
10/23/2003CA2481977A1 Hydraulic compression tool and hydraulic compression tool motor
10/22/2003EP1355068A1 Device for dividing or uniting a supply of fluid
10/22/2003CN1450262A Piston type hydraulic electricity generator
10/15/2003CN1448630A Double-cylinder waterpower engine
10/09/2003US20030188566 Hydraulic compression tool and hydraulic compression tool motor
10/08/2003EP1350990A1 Device for detecting failure of hydraulic motor, and hydraulic vehicle
10/08/2003EP1350011A1 Hydraulic device
10/08/2003EP1350010A1 Hydraulic device as a pump or a motor
10/08/2003CN1447025A Variable displacement oil pressure motor creeper truck drive speed reducer using same
10/02/2003US20030186770 Varibale displacement oil hydraulic motor and crawler vehicle drive speed reducer using the same
09/2003
09/25/2003US20030180158 Hold-down cylinder for axial piston hydraulic pump
09/25/2003US20030180157 Lift off cylinder for axial piston hydraulic pump
09/24/2003EP1346153A1 Hydraulic motor device with displacement selector and a braking system.
09/18/2003WO2003076799A1 Hydraulic engine with stepped radial cylinders
09/17/2003EP1068450B1 Adjustable face plate for hydraulic pump or motor
09/16/2003US6619184 Hydraulic radial piston motor
09/16/2003CA2158277C Hydraulic drive system
09/12/2003WO2003074872A1 An axial piston, swash plate hydraulic mechanism
09/11/2003US20030167770 Hydraulic control circuit for a hydraulic engine with at least two speeds
09/03/2003CN2570495Y Actuating apparatus of cylinder-and-piston type reciprocating pump
09/03/2003CN2570494Y Water motor
08/2003
08/27/2003EP1171689A4 Reciprocating fluid machines
08/20/2003EP1336025A1 Hydraulic cam motor
08/20/2003CN1437686A 液压泵和马达 Hydraulic pumps and motors
08/12/2003US6604450 Hydrostatic slewing drive
07/2003
07/31/2003WO2003062602A1 Hold-down cylinder for axial piston hydraulic pump
07/31/2003WO2003062601A1 Lift-off cylinder for axial piston hydraulic pump
07/31/2003WO2003062600A1 Releasable locking mechanism for axial piston hydraulic pump
07/30/2003EP1151196B1 Reciprocating differential hydraulic machine, especially a differential hydraulic machine
07/29/2003US6598694 Hub drive
07/22/2003US6595015 Air conditioning systems
07/16/2003CN1430707A Hydraulic percussion/pressing device
07/10/2003WO2003056172A1 Hydraulic radial piston motor
07/10/2003WO2003056171A1 Hydraulic radial piston motor
07/08/2003US6589027 Double acting reciprocating motor with uni-directional fluid flow
07/02/2003CN2558777Y Bellows type sea wave electric generating apparatus
06/2003
06/25/2003EP1099055B1 Radial piston engine with roller guides
06/19/2003WO2003050396A1 Apparatus and method for generating power from a flowing liquid
06/19/2003CA2470121A1 Apparatus and method for generating power from a flowing liquid
06/12/2003WO2003048587A1 Drive
06/12/2003US20030106418 Apparatus and method for generating power from a flowing liquid
06/10/2003US6575078 Fluid motor having fluid actuated advancing elements to advance an advanceable part of the fluid motor relative to a stator part of the fluid motor
06/04/2003CN1421606A Inclined disc lengthening servo convex sliding block positioning apparatus and assembling method thereof
06/03/2003US6572344 Compact pump or motor with internal swash plate
05/2003
05/29/2003US20030099551 Compact pump or motor with internal swash plate
05/29/2003US20030097927 Extended male slipper servo pad arrangement for positioning swashplate and method assembling same
05/28/2003EP1313948A2 Reciprocating motor with unidirectional fluid flow
05/27/2003US6568311 Hydraulic motor with shift transmission
05/15/2003US20030089222 Hydraulic percussion/pressing device
05/14/2003CN1417486A Oil draining method and device for hydraulic returm motor
05/14/2003CN1417468A Multipurpose engine with low consumption and no pollution
05/08/2003US20030085076 Method and apparatus for returning the drain oil of a hydraulic motor
05/07/2003EP1308620A1 Method and apparatus for returning the drain oil of a hydraulic motor
05/07/2003CN2549194Y Differential mechanical reversed pneumatic motor
04/2003
04/23/2003CN2546645Y Hydraulic motor static balance oil distributing shaft
04/23/2003CN2546644Y End face oil distributing cycloidal hydraulic motor
04/23/2003CN1412020A Axial piston unit for integrated wheel hub
04/16/2003CN1410668A Double action biram hydraulic driving motor
04/10/2003US20030066703 Axial piston unit for integrated wheel hub
04/08/2003US6543222 Braking system for braking a rotor relative to a stator
04/08/2003CA2053765C Valve assembly
04/02/2003EP1297259A1 Hydraulic pump and motor
04/02/2003CN1407256A Tilted variable axial piston device
03/2003
03/25/2003US6537047 Reversible variable displacement hydraulic pump and motor
03/19/2003CN1404553A Leakage oil return apparatus for a hydraulic motor
03/12/2003CN1401894A Double-acting four-plunger hydraulic pump or motor
03/12/2003CN1401892A Pulse width modulated deep sea water pressure-mechanical energy conversion system
03/12/2003CN1401891A Deep sea water pressure type energy supply system
02/2003
02/26/2003EP1285170A1 Hydraulic percussion/pressing device
02/19/2003EP0872637B1 Cam motor device
02/13/2003WO2003012289A1 Axial piston motor
02/11/2003CA2115649C Hydrostatic axial piston motor for fitting in the hub of a driven wheel
02/06/2003US20030027677 Axle driving apparatus
01/2003
01/28/2003US6510779 Electronic bore pressure optimization mechanism
01/23/2003WO2003006827A1 Rotary fluid energy converter
01/23/2003WO2003006802A1 Rankine cycle device
01/23/2003US20030015237 Relief-valve jet
01/22/2003EP1276970A1 Piston assembly for a radial piston hydraulic motor
01/16/2003US20030010562 Leakage oil return apparatus for a hydraulic motor
01/09/2003WO2003002291A1 Selectively cold worked hydraulic motor/pump shoe
01/08/2003CN1098421C Cam motor device
01/02/2003US20030000603 Cold-heading one end portion of cylindrical blank to radially increase and axially diminish the dimensions of one end portion, and to work harden the one end portion while leaving an opposite end portion dimensionally unchanged; cold-working
12/2002
12/25/2002CN1386975A Liquid engine using air energy
12/25/2002CN1097160C Hydraulic engine with compact brake
12/18/2002EP1267072A2 Hydraulic machine with position feedback
12/17/2002US6494127 Radial piston engine with guide rollers
12/17/2002US6494126 Radial piston hydraulic motor
12/12/2002US20020185000 Hydrostatic slewing drive
12/04/2002EP1261803A1 Leakage oil return apparatus for a hydraulic motor
11/2002
11/21/2002US20020170289 Swash plate type hydraulic drive transmission and hydrostatic type continuously variable transmission
11/20/2002CN1380496A Slope plate type hydraulic action device and static pressure stepless speed variator
11/20/2002CN1094561C Large torque and high efficient axial piston hydraulic motor
11/13/2002EP1255930A1 Hydraulic control circuit for a hydraulic engine with at least two speeds
11/05/2002US6474218 Hydrostatic continuously variable transmission
10/2002
10/31/2002US20020157530 Axial servo control
10/31/2002DE10209805A1 Electronic bore pressure optimization mechanism for pumps, motors, has valve to which control signal is sent to adjust the size of variable orifice through which flow of fluid to pressure passage is detected
10/30/2002CN1093591C Thermal hydraulic engine
10/29/2002US6470786 Radial piston hydraulic engine
10/17/2002US20020150483 Double acting reciprocating motor with uni-directional fluid flow
10/16/2002EP1249640A2 Swash plate type hydraulic transmission
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