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Patent Searching and Data


Matches 401 - 450 out of 6,287

Document Document Title
WO/2003/050396A1
This invention provides an apparatus and a method for generating power from a flowing liquid. The apparatus has three main components. The first component is a control unit (40) for selectively directing the lowing liquid to the second c...  
WO/2003/048587A1
The invention relates to a drive comprising a hydraulic pump by which means two hydraulic motors can be supplied with a pressure medium. The inventive drive comprises a variable hydraulic resistance in the admission line or outflow line ...  
WO/2003/033912A1
A vane rotary machine suitably used when low viscosity fluid such as water is used as working fluid, wherein a rotor (11) with vanes is rotatably stored in a cam casing (10), a motor supply port (or a pump discharge port) (30) for the wo...  
WO/2003/029660A1
A speed−regulating hydraulic valve device (1) for hydraulic coupling and uncoupling of groups of chambers in a hydraulic multi−chamber motor (4) where the speed of the motor may be regulated by directing a flow of pressurised fluid t...  
WO/2003/027045A3
Systems and methods involving monopropellant and hypergolic powered proportional actuators that may be used in applications such as robotics. A blowdown tank (10) delivers fuel to a reaction site, produce gaseous products. Those gaseous ...  
WO/2003/027045A2
Systems and methods involving monopropellant and hypergolic powered proportional actuators that may be used in applications such as robotics. A blowdown tank (10) delivers fuel to a reaction site, produce gaseous products. Those gaseous ...  
WO/2003/016680A1
A heat engine (10) and a method of opening the heat engine which includes a plurality of heating side expansion chambers (20) and cooling side expansion chambers (12), positioned on opposite sides of an axis, for providing rotation of an...  
WO/2003/012289A1
The invention relates to an axial piston motor (1) whose axial pistons (3) move periodically in an oscillating manner with the rotation of the axial piston motor (1) in the housing (2). One proven disadvantage is that conventional mechan...  
WO/2003/006827A1
A rotary fluid energy converter capable of eliminating the need of a large capacity rolling bearing by canceling a bearing load with a couple formed by a fluid pressure, wherein a static pressure pad (6) held by a casing (5) is installed...  
WO/2003/006802A1
A Rankine cycle device provided with a working medium circulating circuit (110) including an evaporator (112), an expander (113), a condenser (114), and a pressure pump (115), wherein a mixture of oil for lubricating the expander (113) a...  
WO/2003/002291A1
A method of manufacturing a wear resistant shoe (26) includes upsetting (46) one end portion (38) of cylindrical member to work harden that portion to a substantial depth, machining (48) the cylindrical member portion to finished dimensi...  
WO/2002/077457A1
A piston-chamber combination comprising an elongate chamber which is bounded by an inner chamber wall and comprising an elastically deformable piston comprising a container in said chamber to be sealingly movable relative to said chamber...  
WO/2002/070865A1
A rotary hydraulic machine comprising a first working section (49) and a second working section (57) comprising an axial piston cylinder group, wherein a rotary valve (61) for controlling suction/discharge of working medium for the first...  
WO/2002/059482A1
This integral unit is available with its small outline dimensions, minimal mass and unit function improvement. The unit consists of a shaft (1) stored in a housing (4) and a hydraulic brake back flange. The back and the front support cov...  
WO/2002/057606A1
The invention concerns a mechanism operating according to the principle which states that each point in a circle, running in the circle, describes a rectilinear hypocycloid. Said mechanism which is perfectly dynamically balanced reduces ...  
WO/2002/053907A1
The invention relates to a hydraulic motor device with a displacement selector (16) in at least two positions, methods of controlling said selector comprising a hydraulic control chamber (18) that can be supplied with fluid via a control...  
WO/2002/050454A1
A device for detecting failures of a hydraulic motor comprises a hydraulic pump (3) driven by a motor (2), a hydraulic motor (1) driven by the fluid discharged from the hydraulic pump (3), a failure detector (35) for detecting malfunctio...  
WO/2002/044525A1
The invention relates to a hydraulic device provided with a housing having at least a first line connection and a second line connection and, if appropriate, further line connections, a rotor which can rotate in the housing and chambers ...  
WO/2002/044524A1
The invention relates to a hydraulic device as a pump or a motor, having a rotor which is coupled to the shaft, chambers with a volume which, on account of the rotation of the rotor, varies between a minimum value and a maximum value, sw...  
WO/2002/042596A1
A compressed fluid driven downhole cam motor (1) of the type used during drilling/service operations in the ground, comprising an intermediate casing (4), a distributing valve (26), a rotor (18) and two or more pistons (48) arranged radi...  
WO/2002/036964A1
There is disclosed a fluid machine which, in one embodiment comprises a motor (10), the motor (10) comprising a shaft (12) rotatable about a main shaft axis (14); a sleeve (16) located around the shaft (12) and having a main sleeve axis ...  
WO/2002/033238A1
A fluid power transfer device (20) includes a wobble plate assembly (26) having a wobble plate (58) that rolls against truncated cone portions (42) of a housing (22) and has an inner extremity 60) rotatably supported by an axially inclin...  
WO/2002/018782A1
A hydraulic motor (10) wherein the number and placement of cylinder fluid inlets (L1,L2) and outlets (R1,R2) facilitates input and exhaust fluid distribution and control via a reduced number of valves (400) and flow paths, and also provi...  
WO/2002/016766A2
A double-acting reciprocating motor with uni-directional fluid flow path comprises a piston disposed within a cylinder. A first chamber is defined by the cylinder space between the piston and a cylinder base. A second chamber is defined ...  
WO/2002/002970A1
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/2001/098659A1
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/2001/092730A1
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/2001/081727A1
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/2001/065113A1
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/2001/065118A1
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/2001/061150A1
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/2001/061186A1
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/2001/042635A1
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/2001/036818A1
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/2000/077403A1
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/2000/071852A1
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/2000/070227A1
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/2000/068568A1
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/2000/065235A1
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/2000/060216A1
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/2000/055528A1
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/2000/047895A1
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/2000/045032A1
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/2000/042321A1
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/2000/035699A1
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/2000/028211A1
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/2000/026540A1
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/2000/009887A2
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/2000/006869A1
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/2000/005502A1
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 ...  

Matches 401 - 450 out of 6,287