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WO/2005/093250A1 |
Smaller and lighter hydraulic pump/motors provide remarkably improved volumetric efficiency with pistons having body portions substantially as long as the axial length of the respective cylinders in which they reciprocate. A plurality of...
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WO/2005/065978A1 |
A hydrostatic drive system comprising at least one hydropump (100) and at least two hydromotors (104,109). The hydropump (100) divides its total hydraulic fluid flow into at least two partial hydraulic fluid flows which are respectively ...
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WO/2005/061261A1 |
A vehicle (1) utilizes a hydrostatic transmission arrangement (10, 11, 12, 13). This transmits drive force (F) from at least one first wheel (2) to at least one second wheel (3). The arrangement comprises a hydrostatic pump, which can be...
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WO/2005/043009A1 |
The device comprises a main hydraulic pump (52), two main conduits (50,54), a supercharging pump (56), a first hydraulic motor (10,20) consisting of two elementary motors (11,12,21,22) used to drive a first displacement element (1,2) and...
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WO/2005/028917A2 |
The invention relates to transport means, in particular to vehicles provided with a fluid power drive. The inventive transmission comprises a non-adjustable flat hydraulic pump which is cinematically connected to the engine of the transp...
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WO/2005/026582A1 |
A hydraulic device comprising an input shaft (2) and an output shaft, first and second plungers (8, 10) reciprocating in the axial direction, first and second spool valves (9, 11) similarly reciprocating in the axial direction, a cylinde...
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WO/2005/002896A1 |
A wheel drive section structure, wherein a housing (12) installed under a vehicle body and storing a front wheel drive shaft system (11) is formed in a cylindrical shape, hydraulic motors (14) for front wheel driving are disposed at both...
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WO/2005/003598A1 |
The system for converting a linear motion into a rotational motion is characterized in that it comprises two hydraulic converters, integrated with a common compensating reservoir (1) filled with a working liquid, which are connected to a...
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WO/2004/104448A1 |
A hydrostatic stepless speed change device (1) constructed in combination of an axial piston hydraulic pump (30) and a hydraulic motor (40). A pump-side plunger block (31) and a motor-side plunger block (41) are opposed to each other wit...
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WO/2004/083684A1 |
The present invention relates to a control device for hydraulic differentials in vehicles. The object of the invention is to provide a control device for a hydraulic differential, which eliminates the necessity of wheel base devices for ...
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WO/2004/062956A1 |
An axle drive device (2) is suspended so as to be swingable about the center axis for swing, or the axis in a forward-backward direction of a motor-vehicle frame. The device is constructed from a hydraulic drive unit (20) and a left and ...
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WO/2003/106864A1 |
A hydraulic stepless speed changer comprises a first hydraulic device and a second hydraulic device. In a cylinder block, there are formed a first and a second plunger hole for respectively accommodating the first and the second plunger,...
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WO/2003/106863A1 |
A hydraulic stepless speed changer comprises a first hydraulic unit having a first plunger and a swash plate with which the first plunger is in contact, and a second hydraulic unit having a second plunger and a swash plate with which the...
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WO/2003/095845A1 |
Hydraulic systems (1) generally comprise expansion hose lines and other damping elements (21, 22) which are provided with one or several serially connected hose chambers according to the generated pressure pulsation. The damping measures...
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WO/2003/062673A1 |
The present invention relates to a transmission system suitable to pedal-driven vehicle, motor vehicle, propeller-driven watercraft and propeller-driven aircraft. The transmission system is coupled with power source; it includes air pump...
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WO/2003/006849A1 |
In a hydraulic continuously variable transmission, an oil path connecting a valve hole, a first and a second plunger hole is formed in a cylinder block. The oil path has a confluent portion for converging the valve hole with the first an...
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WO/2003/002894A1 |
A hydraulic stepless speed−change device comprising a first variable capacity type hydraulic device provided with a first plunger and a plunger abutment and adapted to actuate the first plunger by the abutment, and a second hydraulic d...
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WO/2002/070866A1 |
An expansion machine for converting thermal energy and pressure energy of working medium into mechanical energy comprising a section, e.g. an axial piston cylinder group, working with working medium introduced into a working chamber, and...
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WO/2002/066869A1 |
In the case where a power unit (U) integrally provided with an engine (13) and an HST (24) provides joint use of oil both as lubricating oil for the engine and as working fluid for the HST (24), the joint use oil is fed from the engine (...
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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...
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WO/2002/025142A1 |
Hydraulically driven apparatus where the rotation of a ground contact wheel (3) automatically rotates a second device requiring drive (5) via a circuit (15, 16) and hydraulic motors (4,6) attached to the wheel (3) and second device (5), ...
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WO/2002/006704A1 |
A hydraulic continuously variable transmission, wherein a first hydraulic device of variable displacement type operates first plungers by a plunger contact part, the output rotating part of a second hydraulic device performs a relative o...
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WO2001053725B1 |
Automatic transmission, comprising at least one primary hydraulic pump (1) arranged to be powered by a motor, said primary pump (1) being arranged to power a number of at least two secondary hydraulic pumps (21-2n) which are mechanically...
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WO/2001/086173A1 |
An off-road machine (10) is provided with a hydraulic pump system (19) for operating drive motors (14A, 14B) for propelling the machine (10), as well as operating actuators (24, 27, 28) for machine functions. The hydraulic pump system us...
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WO/2001/059330A1 |
A torque conversion system (1) comprises a first reciprocating piston engine (2) including a first chamber (31), a first intake port and a first exhaust port; a second reciprocating piston engine (3) including a second chamber (34), a se...
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WO/2001/040662A1 |
The invention relates to a machine building industry and can be used for both stationary and mobile power plants. A method for operating the power plant consists in a transfer of mechanical energy between a mechanism with an oscillating ...
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WO/2001/040683A1 |
Disclosed is a torque converter which is operated by fluid pressure. The torque converter comprises a rotary input section connected with an engine output shaft to receive power which is generated in an engine; and an output section disp...
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WO/2001/005647A2 |
A drive system that is suitable for use in a bicycle includes a pair of pedals (9) that are mounted on a lever system (1, 2, 6) for substantially rectilinear reciprocating movement, and a hydraulic drive (10) connected to the pedals thro...
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WO/2000/077426A1 |
The invention relates to a hydrostatic traveling mechanism (1) which comprises a hydraulic pump (4), a first hydraulic engine (8) that is linked with the hydraulic pump (4) via a hydraulic work circuit (2) and that drives a first drive t...
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WO/2000/071379A1 |
The invention relates to a hydrostatic travelling mechanism (4) that comprises a closed hydraulic circuit (6) in which a first hydraulic pump (4) with a first hydraulic engine (12) is linked with a flow pipe (7) and a return pipe (8). Sa...
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WO/2000/071905A2 |
This invention concerns with transmissions specially those are used in the vehicles. A generic conception of performing three main functions that are splitting, controlling and combining of power is presented and representing a new trans...
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WO/2000/028240A1 |
The present invention relates to axle and intermediate differential mechanisms applicable in vehicles. The inventive differential distributes the torque to the driven shafts automatically and in proportion to the loadings without mountin...
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WO/2000/006408A1 |
The invention relates to a hydrostatic drive (1) comprising a first hydraulic pump (2) and a second hydraulic pump (3), in addition to a first hydraulic motor (7) and a second hydraulic motor (12), said hydraulic pumps (7, 12) driving se...
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WO/1999/066230A1 |
The present invention relates to volumetric hydraulic transmissions which are capable of modifying the rotating momentum to be transmitted. This adjustable volumetric and hydraulic transmission comprises a cinematic chain which is formed...
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WO/1999/064264A1 |
A working vehicle having a working device on one longitudinal outer side of a vehicle body, comprising a transmission mechanism with simple structure and a pressure oil feeding device for the mechanism capable of shortening the overall l...
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WO/1999/061820A1 |
A power dividing device (21) for a vehicle transmission to provide two rotating outputs (27, 30) having variable relative speed of rotation from a single rotatable input (20). The device (21) includes a first rotational element (22) driv...
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WO/1999/025953A1 |
A device (2) for altering the displacement volume of a hydrostatic machine (1) has an actuator (3) which can be moved in a direction of adjustment and back in a resetting direction and is connected to a component of the hydrostatic machi...
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WO/1999/024737A1 |
The present invention concerns a method for continuously changing speed ratios with a pressure coupling type of hydraulic device. The invention is based on the principle and the structure of a hydraulic or pneumatic pump, in which the ro...
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WO/1999/013222A1 |
A swash plate hydraulic device for use as a swash plate hydraulic pump and a hydraulic motor, comprising a plurality of block plates (4¿1?-4¿5?) divided at split planes orthogonal to a cylinder block axis (X) and brazed to one another ...
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WO/1998/049467A1 |
To control transmission ratio of a continuously variable hydrostatic transmission including an input shaft (14), an output shaft (16), a hydraulic pump unit (18) driven by the input shaft (14), a grounded hydraulic motor unit (20), and a...
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WO/1998/049466A1 |
An infinitely variable hydrostatic transmission includes an input shaft (12) connected to drive a hydraulic pump unit (24), a grounded hydraulic motor unit (26), and an output shaft (14). A swashplate assembly (36) is connected to impart...
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WO/1998/049468A1 |
In a continuously variable hydrostatic transmission including a hydraulic pump unit (18) driven by an input shaft (14), a grounded hydraulic motor unit (20), and an intermediate, wedge-shaped swashplate (22) for developing torque on an o...
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WO/1998/048200A1 |
The present invention relates to a controlled hydraulic transmission that may be used in force transmissions or vehicle transmissions as well as in cinematic systems requiring a constant change in the transmission ratio. This transmissio...
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WO/1998/040236A1 |
An axle driving apparatus consisting of a housing (1, 2) for compactly housing inner portions of axles (7), a hydrostatic transmission, and a transmitting mechanism for transmitting power to the axles from an output shaft (4) of the hydr...
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WO/1997/038245A1 |
In order to obtain a hydrostatic, continuously variable force transmission device with a high efficiency, a substantially smaller size and therefore a reduced weight, it is proposed that two displacement units (4, 5) be arranged in a hou...
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WO/1997/037887A1 |
A device for transmitting power between mechanical movements which includes a fluid pump (22) coupled to a first mechanical movement (12, 16) for pumping a fluid, a fluid motor (28) coupled to a second mechanical movement (36) and a mani...
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WO/1997/015764A1 |
An axle driving apparatus includes a first axle driving unit (18L) having a housing (40) and a single axle (20L). An enlarged region is defined by the housing (40), with the enlarged region extending substantially perpendicular to the lo...
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WO/1997/014896A1 |
A continuously variable hydrostatic transmission includes axially aligned input (14) and output (16) shafts journaled by a transmission housing (12) and respectively coupled to a prime mover and a load. The input shaft (14) drives a hydr...
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WO/1997/009546A1 |
Continuously adjustable hydraulic transmission comprising a hydraulic pump and a hydraulic motor, the displacement volume of the motor being adjustable from the outside of the transmission, where the pump being an axial piston pump or a ...
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WO/1996/041067A1 |
A continuously variable hydraulic machine has a vane rotor (412) with a plurality of radial vanes (414) and a connection for a torque transmitting input shaft (422). A cam ring (404) supported in a position surrounding the vane rotor (41...
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