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Patent Searching and Data


Matches 401 - 450 out of 2,276

Document Document Title
WO/2002/002970
A hydrostatic transmission (10) comprises an array of radially arranged pistons (11) which are attached to rotor (15). The rotor (15) is stabilised against excessive rotation and bears on a crankshaft (20) has variable stroke which serve...  
WO/2001/098659
A hydraulic unit has a drive shaft (52) mounted in a manifold block (54) and coupled to a torque plate (80) on a central axis. A bent axis motive unit (60) has a yoke connected to the manifold block supported for rotation on the yoke. Ho...  
WO/2001/092730
The present invention relates to a hydraulic DEVICE comprising a valve housing (1) with a movable valve body (2) arranged inside the valve housing, a hydraulic cylinder with at least a hydraulic chamber (115), and at least a control mech...  
WO/2001/081727
The invention refers to a piston assembly for a radial piston hydraulic motor. The essence of the solution lies in that a longitudinal axis (12) of a roller (11) substantially coincides with an axis through centre of gravity of a piston ...  
WO/2001/065113
The invention relates to a leakage oil return apparatus for a hydraulic motor. The apparatus is used for returning the oil leaked from the working pressure space of a motor (1) into a motor casing (12) from the casing (12) back to a retu...  
WO/2001/065118
A hydraulic pressure transformer (10) for the conversion of an input hydraulic power to an output hydraulic power comprises a cam block (26) including a cam opening (30) defining a pump section (32) and motor section (34). The pump secti...  
WO/2001/061150
A rotary hydraulic motor (10) drives an output shaft (16), and engages a load shaft (70) through a clutch (17). The output shaft of the rotary hydraulic motor is displaced in an axial direction by an actuator rod (28) which is connected ...  
WO/2001/061186
The invention relates to a hydraulic control circuit for a radial piston engine with two speeds. The changeover between the speeds takes place through the alteration of the absorption volume, the delivery side (22, 122, 222) being connec...  
WO/2001/042635
A motor, expander, compressor, or hydraulic device is formed with an oscillating rotating piston (2, 3) comprising a cylinder (4, 5) having an axis of rotation and end surfaces and defining an oscillating compression volume (24, 25) and ...  
WO/2001/036818
The invention relates to a hydraulic radial piston motor. The aim of the invention is to reduce the impact produced in a hydraulic radial piston motor during downshifting and upshifting. To this end, a valve (1) that controls the piston ...  
WO/2000/077403
A volume control valve of a variable displacement hydraulic rotating machine, wherein, while a spool (19) is set at a small volume position, a hydraulic chamber (22) communicates with a tank port (15C) to receive a pilot pressure only on...  
WO/2000/071852
The axial piston machine may be used as a hydraulic pump or hydraulic motor. A rotor of the piston machine includes an outer part (13) having a spherical inner surface (15) and an inner part (14) having a corresponding spherical outer su...  
WO/2000/070227
A combination of a piston and a chamber, wherein the chamber defines an elongate chamber having a longitudinal axis, the chamber having, at a first longitudinal position thereof, a first cross-sectional area thereof and, at a second long...  
WO/2000/068568
A hydraulic motor capable of minimizing a wear caused on a rotating brake disk of a brake device, wherein a rotating brake disk (32) which forms a plurality of arc-shaped grooves (17) apart from each other in circumferential direction an...  
WO/2000/065235
The object of the invention is to provide a reliable and inexpensive combination of a chamber and a piston to be used in any device where such a combination is needed so that it complies with specific demands towards the operation force ...  
WO/2000/060216
A scotch yoke type fluid device in which the pistons (32) are decoupled from each other and provides each piston (32) with its own pair of sliding surfaces (30) and its own slider (18). The sliding surface (30) of each piston are dispose...  
WO/2000/055528
A control system (10) for a hydraulic transformer (12) comprises a hydraulic transformer (12) for providing hydraulic pressure to a fluid actuator (34), a hydraulic system (14) for providing a variable pressure input to the hydraulic tra...  
WO/2000/047895
A hydraulic machine comprising the following: an envelope (2); a differential piston (15) consisting of two parts (15a,15b) which have a different diameter and are able to move in two corresponding chambers (7,6); hydraulic switching mea...  
WO/2000/045032
A machine, such as an engine, which includes a cylinder (1), an essentially cylindrical piston (5) set on bearings and equipped with an eccentrically-set shaft (11), an inlet port or valve (8), an outlet port or valve (9), and a lever de...  
WO/2000/042321
A hydraulic machine of the gerotor type. The machine uses two gerotors which are preferably coplanar, and positioned nearly concentric to each other. This dual arrangement approximately doubles the displacement of hydraulic fluid per rev...  
WO/2000/035699
The invention relates to a hydromechanical rotational drive comprising an axial piston motor configured as a swash plate and a planetary gear (21) with a ring gear (24) mounted downstream. The ring gear is connected to an output hub (1) ...  
WO/2000/028211
A hydraulic pressure transformer (10) for the conversion of an input hydraulic power (12) to an output hydraulic power (14) includes a housing (16) with a generally planar face surface (28) and a plurality of ports (30, 32) opening at th...  
WO/2000/026540
The invention relates to a series for compressed air motors provided for different volumetric displacements comprising at least two compressed air motors (1, 100). Each compressed air motor has at least two intermeshing displacement elem...  
WO/2000/009887
The invention relates to a pump for delivering a fluid, especially a vane-cell pump, comprising a delivery device (1) which is accommodated in a casing (2). The casing (2) is closed on one side by a casing cover (3), and the other side i...  
WO/2000/006869
A fluid motor includes a plurality of fluid actuated pistons (13) extending radially outwards from a stator and each having a cam follower bearing (14) at its outer end. A rotor surrounds the stator and includes an inwardly facing drive ...  
WO/2000/005502
The invention relates to a hydraulic radial piston engine comprising a lift ring (15) and a cylinder block (18) that is rotationally mounted around an axis of rotation and consists of a plurality of cylinders (15) that are oriented in a ...  
WO/1999/058821
The device (1) for adjusting the phase position of a shaft, especially a camshaft (2) that can be rotated by a drive shaft, more particularly a crankshaft, by means of a transmission device with at least one transmission wheel (6'), is c...  
WO/1999/056018
The invention relates to an axial piston variable displacement machine for converting hydraulic work into mechanical work or vice versa, comprising a plurality of hydraulic cylinders (2) that are rotationally mounted with substantially p...  
WO/1999/054624
A hydraulic rotating axial piston engine, having a housing (2), enclosing a rotatable cylinder barrel (11), having a number of axial cylinders (13) with a number of reciprocating pistons (12). The pistons reciprocate between two defined ...  
WO/1999/054625
A pressure transformer (10) has an adjustable port plate (26) between the barrel (40) of the rotating cylinder block and the head block (28). The barrel (40) contains a plurality of cylinders (44) for the pistons (47). The cylinder ports...  
WO/1999/051881
The invention relates to a hydraulic axial piston pump, motor or pressure transformer with a plurality of fluid chambers in the rotating cylinder block (6). The volume of the fluid chambers (7) changes between a minimum value (discharge)...  
WO/1999/050085
The invention relates to a hydrostatic mechanical drive, comprising a hydrostatic radial piston motor (4) whose pistons are supported by rollers on an outerlying cam ring (8), said cam ring being rigidly connected to the drive housing (1...  
WO/1999/046504
The invention concerns a technically optimised radial piston engine comprising a cam ring and a cylinder block arranged so as to rotate about an axis of rotation relative to the cam ring and having a plurality of cylinders oriented in th...  
WO/1999/041500
A hydraulic rotating axial piston engine (1), having a housing, enclosing a cylinder barrel (111) journalled in said housing for rotation around a barrel axis and having a number of circumferentially arranged cylinders (113b) with a numb...  
WO/1999/041499
A hydraulic rotating axial piston engine (1), having a housing (2), enclosing a rotatable cylinder barrel (11), having a number of axial cylinders (13a, 13b) with a number of reciprocating pistons (12). Said pistons being reciprocating b...  
WO/1999/039099
A lubrication path in a gerotor motor (10) extending in the face of the rotor (45) or an adjoining surface (27) from a gerotor cell (47) having a relatively high pressure to the central cavity (52) of the device to provide cooling and lu...  
WO/1999/030034
A hydraulic rotating axial piston engine, having a housing, enclosing a rotatable cylinder barrel, having a number of axial cylinders with a number of reciprocating pistons, said pistons reciprocating between two defined end positions. T...  
WO/1999/030030
The invention relates to a drive device (10) which has small dimensions in an axial and radial direction. The small dimensions of said device are a result of the brake body (202) of a friction brake (200) provided in the drive device bei...  
WO/1999/027254
The stator, rotor and/or flex shaft of a progressive cavity motor is made up of composite materials, e.g., fiberglass and resin, in a variety of combinations with and without bonded resilient elastomers. The composites are formulated to ...  
WO/1999/025954
A small rotor (7) integrated with a main shaft (6) is eccentrically disposed in a large rotor (8) composed of an annular tube for holding a bearing in a bearing housing (9); paired slide grooves (12, 13) having prescribed relative orient...  
WO/1999/024711
The invention concerns a radial-piston hydraulic motor (10), which comprises one or several cylinder groups (1) placed in a stationary position, which cylinder groups contain piston mechanisms (16a¿1?, 16a¿2?,; 17a¿1?, 17a¿2?...) mov...  
WO/1999/020899
A hydraulic pump or motor adapted to reliably prevent the contact surfaces of a piston and a shoe from being separated from each other while allowing a slight slide thereof, comprising a hemispherical shoe contacting a rotary board membe...  
WO/1999/002855
The invention concerns a device comprising first and second brake means (16, 20) respectively integral with the first and second element (10, 12) in rotation about an axis of rotation (14), and a brake piston (18) capable of taking up an...  
WO/1999/002854
Moteur hydraulique (1) comprenant un carter (2A, 2B), un organe de réaction ayant un profil de réaction (4), un bloc-cylindres (6), un distributeur interne de fluide (16) susceptible de mettre les cylindres (12) du bloc-cylindres (6) e...  
WO/1998/037324
An inclined shaft type axial piston pump motor is capable of preventing galling and seizure at spherical-shaped sliding surfaces of a cylinder block and a valve plate and permits high speed. Thus the axial piston pump motor comprises a s...  
WO/1998/030800
A radial piston motor comprising a cylinder block (1), a motor case (3) fitted rotatably to the outer peripheral surface of the cylinder block and having a rotating cam (12) on the inner surface thereof, a plurality of cylinder portions ...  
WO/1998/020255
A cam motor device (A) comprises a plurality of cylinders (5, 5, ...) provided in a cylinder block (2) adapted to rotate together with an output shaft (10), and arranged radially in a direction perpendicular to a rotating axis (X), pisto...  
WO/1998/020258
The invention concerns an axial piston machine (1) which comprises a cylinder block (2) having cylinder bores (3, 4) in which pistons (5, 6) are movably guided, said pistons (5, 6) being supported on an inclined or wobble plate (25) in o...  
WO/1998/018646
An electric car in which an electric current sent from one of battery cassettes (5), which are used in an interchanging manner, and through a high-voltage relay (6) is regulated by a controller (3), a rotational force obtained by operati...  
WO/1998/016744
A hydraulic motor (100) for incorporation in a vehicle which has road engaging wheels and rail engaging wheels. The motor (100) has a shaft (102) which rotatably supports an outer housing (103) fixed to a wheel (129). Mounted on the shaf...  

Matches 401 - 450 out of 2,276