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WO/2009/026893A1 |
The invention relates to a drive system for hydraulic presses, which allows constant and symmetrical prestressing of the press frame (1), said prestressing being independent of the required forming force, and thus precise guidance of the...
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WO/2009/026878A1 |
The invention relates to a master cylinder, e.g. for the actuation of a clutch or a brake of a motor vehicle, wherein a piston is axially displaceable inside a guide sleeve and the piston has a front recess in which a piston-side end of ...
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WO/2008/133352A1 |
There is provided a fluid pressure drive unit that can fulfill a position holding function stably even when an external force acts during the time when the position is held, the unit being used, for example, for the right and left angle ...
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WO2008100830A9 |
Actuators suited for use with, for example, vehicular suspension systems. In some embodiments, the present actuators include a reversible hydraulic pump configured to produce variable hydraulic pressure; a hydraulic cylinder assembly (60...
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WO/2008/126579A1 |
An actuator has a power source (10), a cam member (15) driven by power from the power source (10), a following member (19) operatively associated with movement of the cam member (15), a receiving section (20a) for receiving an operation ...
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WO/2008/071140A2 |
The invention relates to a hydraulic circuit arrangement for controlling a hybrid clutch and an automatic gearbox on a motor vehicle, comprising: an electric hydraulic pump for supplying the hybrid clutch and the automatic gearbox with a...
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WO/2008/037306A1 |
A hydrostatic drive unit is disclosed for supplying pressure medium to a hydraulic consumer having two pressure spaces. According to the invention, the hydrostatic drive unit has an adjusting motor and two hydrostatic units which can be ...
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WO/2008/037307A1 |
A hydrostatic gear mechanism having a drive motor is disclosed, the inflow and outflow connections of which are connected to a pump arrangement, via which pressure medium can be conveyed out of a diminishing pressure space of the output ...
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WO/2008/012558A2 |
A variable transmission comprises a first fluid working machine (1) for connection to a prime mover (2), a second fluid working machine (5) for connection to a mechanical load (6) and a fluid system linking the first and second working m...
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WO/2007/140947A1 |
The invention relates to a hydrostatic drive having a first and a second hydraulic pump (11, 12) and a double-action hydraulic cylinder (2). The double-action hydraulic cylinder (2) has a first working chamber (7) and a second working ch...
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WO/2007/128863A1 |
In the positioning system for an operating cylinder (1), a valve or a set of valves (6; 10, 11) comprises means for allowing a free supply of hydraulic fluid from a pump fluid chamber (8) of a pump cylinder (7) into an operating fluid ch...
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WO/2007/122652A1 |
System for controlling the motion of an actuator (A) of a hydraulic system realized by means of any circuit or device that, interposed between pump (P) and actuator, controls the motion of the actuator (A) so that it follows the movement...
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WO/2007/025353A1 |
A fluid transmission that employs a fluid to transmit a force, comprising a conduit for the fluid made from heat shrink polymer tubing, wherein at least a portion of the heat shrink polymer tubing is shrunken, whereby the force can be tr...
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WO/2006/131407A1 |
The invention relates to a passive hydraulic controller, in which the volumes V1 and V2 at the two sides of the piston of two or more hydraulic cylinders (1) in each case are connected to one another hydraulically, so that a displacement...
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WO/2006/096065A1 |
A system for shifting gear comprising a gear lever (1) which is pivotally connected at its lower end (9). The gear lever's movement is transferred to two master cylinders (2, 3), which are in fluid connection with each side (6a, 6b) of a...
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WO/2006/089688A1 |
The invention relates to a hydraulic drive, especially for two-cylinder thick matter pumps. Said hydraulic drive comprises at least one main pump (10) embodied as a hydraulic variable displacement pump, and two hydraulically actuatable d...
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WO/2006/066760A1 |
The invention relates to a hydraulic drive, comprising a hydraulic cylinder (1), divided into a first operating pressure chamber (4) and a second operating pressure chamber (5), by an operating piston (3). The hydraulic drive further com...
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WO/2006/038198A1 |
The present invention relates to a method of extracting a flow signal from echographic signals received from a region of interest comprising moving tissues and flowing fluids. The method comprises a step of calculating Doppler signals fr...
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WO/2006/034559A1 |
New concept of master cylinder for automotive vehicle brake systems, preferably for small size vehicles which have a small engine compartment; this master cylinder has an innovative and different configuration, being presented in an extr...
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WO/2005/121563A1 |
An actuator assembly (1) comprises a body (2) in which works an actuating piston (7), a first piston (5) and at least one second piston (6), a chamber (26) containing a substantially incompressible fluid by which each of the first and se...
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WO/2005/119100A1 |
A system for ensuring that the total force acting on the gear shifting mechanism (3) does not exceed a predetermined value. The force transferred from the gear lever (16) to the gear shifting mechanism receives power assistance from an a...
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WO/2005/088120A1 |
An environmental protection type oil hydraulic engine comprises: four oil hydraulic cylinders, the bottom of each of which is hinged on the base so as to swing forward and backward, and each of which is connected with oil pump via an oil...
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WO/2005/080167A1 |
A tool for bleeding a master cylinder when the master cylinder is unattached to a vehicle. In an exemplary embodiment a bleeding tool includes a shaft attached by means of clamp rods to a master cylinder flange, a clamp handle rotatable ...
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WO/2005/061888A1 |
The invention relates to a device for driving movable mechanical components (10; 12a, b), at least two (10; 12a, b) of which are effectively interconnected in such a way that one component (10) can be driven by means of the other compone...
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WO/2005/052382A1 |
Disclosed is a drive mechanism, particularly for punching machines and nibbling machines, comprising a hydraulic force transmitting element (4) and a spindle drive (26) for driving the force transmitting element. A biasing mechanism (8) ...
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WO/2005/047722A1 |
The invention relates to a system for the hydraulic control (10) of a clutch (12), e.g. a motor vehicle clutch, comprising an upstream master cylinder (14) which is connected to a downstream slave cylinder (18) by means of a conduit (16)...
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WO/2005/046955A2 |
The invention relates to an injection unit (1) for injection molding machines, which comprises an electric motor (30) for the controlled application of nozzles and displacement of the unit. Two parallel hydraulic cylinders (11, 11') are ...
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WO/2005/045256A1 |
The invention relates to a novel hydraulic control system for remotely controlling functional elements, particularly drives, transmissions and rudder blades of vehicles, particularly of watercraft, comprising at least one switching and c...
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WO/2005/028879A1 |
A hydraulic control and adjustment system for hydraulic consumers in a working machine, consisting of at least one hydraulic cylinder (1) with a moveable piston cylinder (3) which separates the hydraulic cylinder into a piston-sided pres...
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WO/2005/026559A1 |
A hydrostatic gear comprising an output motor (5), supplied with a pressure medium by means of a pump (14) driven by a motor (18). The hydrostatic gear is provided with a charge device (6) having two charge pumps (30,32) driven by a comm...
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WO/2005/008075A1 |
The invention relates to a control and adjustment system for a lifting mechanism (100) of a loading blade (6) in a mobile machine tool. Said lifting mechanism is made up of at least one first and second blade cylinder (1, 2), at least on...
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WO/2004/102008A2 |
A system and method is disclosed for supplying hydraulic fluid to a lost motion system in an internal combustion engine. The system may comprise a reservoir; a gallery circuit connected to the reservoir, wherein the gallery circuit is ad...
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WO/2004/097241A2 |
The invention relates to a rotation speed dependent hydraulic clutch consisting of a rotation drive case in a solid case forming a reservoir, a hydrostatic displacement device (1), an output shaft, a friction clutch and a piston (5) for ...
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WO/2004/088134A2 |
A lift measurement system includes a scale (26) and movable indicator (27) where a linkage (24) is provided that transmits movement of the lifted load to the scale. A plurality of displays and linkages are installed at various zones to s...
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WO/2004/083645A2 |
An invented dual, coupled check valve mechanism is described for a direct drive, reversible hydraulic power source for hydraulic circuits that includes a manifold hydraulically coupled to the respective input/output ports and a reservoir...
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WO/2004/079205A1 |
A hydraulic device of which installation position is not restricted. The device has a hydraulic pump (1) that is driven by an electric motor (6) and can be rotated to both directions. Both ports of a hydraulic cylinder and both ports of ...
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WO/2004/071795A2 |
A hard tonneau cover of one or more sections (12,14,16) has a framework of truck mounted rails (32A,32B,134,190) with the cover held for expansion and contraction by trim strips (70,72) mounted to the rails.
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WO/2004/067969A1 |
The invention relates to a hydraulic system for linear drives controlled by displacer elements, especially for mobile working machines. Said hydraulic system comprises at least one differential cylinder, at least one high pressure circui...
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WO/2004/040065A1 |
Disclosed is a damping device, particularly for cable-supported structures such as cable-stayed bridges, stadium roofs, and guyed towers comprising a differential cylinder, two hydraulic machines (22, 24), and an electric motor (26). One...
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WO/2004/010017A2 |
A hydraulic actuation system, especially for actuating the clutch of a vehicle, containing a master cylinder unit, a slave cylinder unit, a hydraulic medium line connecting the two cylinder units and a throttle valve which is used to alt...
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WO/2004/007974A1 |
The invention concerns a hydraulic system comprising at least one hydraulic drive means (1), a conduit system (10) connected to the hydraulic drive means for conveying hydraulic liquid to and from the hydraulic drive means, where the con...
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WO/2003/095846A1 |
The invention relates to a hydraulic system, especially for motor vehicles comprising a master cylinder (92), a slave cylinder (93) and a pressure medium line (99, 100) which is connected thereto. The invention solves the problem of prov...
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WO/2003/093647A1 |
A hydraulic actuated artificial muscle is use with orthetic devices, prosthetic devices or as an actuator for other applications in medical or robotic devices. Working fluid is pumped between two expandable fluid-containing cells (2,10),...
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WO/2003/087589A1 |
The invention relates to a control element that realizes controlling functions in a small space and with a low consumption of energy whereby being able to absorb high levels of stress. The inventive passive control element comprises a ho...
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WO/2003/064091A1 |
A hydraulic operating unit comprising a first coupling section (18) provided at the end part of the pressure oil passage (14) of a pressure oil generating unit (1), a second coupling section (25) provided at the end part of the pressure ...
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WO/2003/053767A2 |
One aspect of the invention provides a positioning system comprising at least one master ram (26, 28) and respective slave ram (22, 24), at least one travel stop (36) and at least one pressure relief valve (68). The or each travel (36) s...
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WO/2003/033399A1 |
A drive device (10), comprising ceramic pumps (18a) and (18b), wherein working fluid (100) in a flow passage (13a) is alternately pressurized and depressurized by the ceramic pumps on the left and right sides of a movable body (110) to m...
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WO/2003/008824A1 |
The invention relates to a release system for actuating a clutch (10) in a vehicle, comprising a master cylinder (2) and a slave cylinder (8), said cylinders being fluidically connected to each other, whereby a suitable previous load val...
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WO/2003/008247A1 |
A master cylinder assembly (10) in which the casing defines an annular seal groove (24j, 24h, 26k, 26y, 26x) defining a forward bore portion (24d) forwardly of the annular groove and a rearward bore portion (26e) rearwardly of the annula...
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WO/2003/008828A1 |
The invention relates to a system for controlling a component of a gear in a vehicle, especially a clutch, by means of a hydraulic transmission link comprising a gearbox control unit and a motor control unit, whereby a loss in fluid in t...
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