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Matches 1 - 50 out of 3,856

Document Document Title
WO/2018/051300A1
Valve (1) for controlling the oil flow to a cylinder (10) provided with single hydraulic connection on one side only, the valve comprising a pneumatic drive group (9) configured to axially move a shutter (5) in the valve chamber in at le...  
WO/2017/210450A1
A stage assembly (10) for positioning a workpiece (22) includes a stage (14), a base (12), a fluid actuator assembly (24), and a control system (20). The fluid actuator assembly (24) moves the stage (14) along the movement axis (30) rela...  
WO/2017/195786A1
An actuator device (10) is provided with: a piston (21), which is housed in an internal space, and which forms, with a cylinder (20), a pair of pressure chambers (24, 25), said piston relatively moving with respect to the cylinder; a fir...  
WO/2017/151618A1
A servovalve comprising a motor, a motor bias mechanism, a first stage valve having a first position, a second stage valve movable with movement of the first valve, a reference member in fluid communication with the second valve, a trans...  
WO/2017/099664A1
A bearing arrangement for a unit that is mutually turnable around a centre of rotation (R) comprising an external part (1) and an internal part (7), which, with the aid of high hydraulically acting pressure, is arranged to achieve a reci...  
WO/2017/087146A1
A reciprocating drive mechanism. The reciprocating drive mechanism may comprise: a spool assembly and a spool housing. The spool assembly may be reciprocally movable within a spool chamber of the spool housing. The spool housing may comp...  
WO/2017/041848A1
The invention relates to a fluid system with a safety-related valve assembly (3) which has a first fluid connection (29) for fluidically connecting to a fluid connection of a fluid source (13) or of a control valve (2; 62), a second flui...  
WO/2016/099383A1
The bearing assembly, consisting of a stator component (S1) and a rotor component (R1), where the rotor component is adapted for a back-and-forth oscillatory movement (P, -P) relative to the stator component, whereby a number of cavities...  
WO/2016/065325A2
An example embodiment includes a hydraulic hybrid system. The hydraulic hybrid system includes a hydraulic system, an energy source configured to produce primary kinetic energy, an output configured to receive at least a first portion of...  
WO/2015/187655A1
An actuator synchronization system comprising a control valve in fluid communication with a plurality of actuators; each of the actuators comprising an input member moveable by the control valve, a main valve moveable from a null to an o...  
WO/2015/112862A1
An agricultural implement includes the use of one or more electromechanical hydraulic cylinder assembly in place of hydraulic cylinders. The assemblies may take various forms for actuation, and can convert an electric power source to hyd...  
WO/2015/106957A1
The invention relates to a pneumatic shifting force support device for a manual transmission, comprising a housing structure which has a compressed air inlet and a ventilation, a control rod (2), and an output unit (A) which comprises a ...  
WO/2014/141961A1
An actuator controller detects the displacement of a piston (7) in a first actuator (5), controls the first actuator (5) through feedback control, measures individual forces generated in the first and second actuators (5, 4), corrects th...  
WO/2014/130324A1
An energy recovery system (50) is disclosed for use with a hydraulic machine (10). The energy recovery system may have a tank (60), a pump (58) configured to draw fluid from the tank and pressurize the fluid, an actuator (28), and an act...  
WO/2013/172761A1
The present invention partly relates to an arrangement and partly a bearing arrangement (10) that can be turned by an assigned hydraulic pressure and flow, which bearing arrangement is related to a chain saw arrangement (101:1), which is...  
WO/2013/161357A1
Provided is three-port valve that can be more accurately controlled using a simple structure. The three-port valve is provided with the following: a first elastic tube (2a) in which a liquid circulates; a first port (2a1) which is a prov...  
WO/2013/102270A1
An electro/hydraulic circuit enabling two mechanical devices to shadow each other's movements without any direct mechanically-operative linkage between the devices. The two devices incorporate matching sets of hydraulic actuators for ind...  
WO/2013/089226A1
The difference between the target position and the current position of a piston is obtained. Further obtained are the pressure from proportional control proportional to said difference, the variable offset pressure based on the value obt...  
WO/2013/085416A1
A single-stage electrohydraulic amplifier with electrical feedback on consumption is intended for automatic systems where rapid-action electrohydraulic amplifiers are used, and comprises a summing operational amplifier with two inputs, t...  
WO/2013/056454A1
A method for controlling a hydraulic cylinder comprises: controlling the acceleration of a hydraulic cylinder when the hydraulic cylinder advances, and/or, controlling the acceleration of the hydraulic cylinder when the hydraulic cylinde...  
WO/2013/053668A1
Hydraulic servovalve (1) having two stages and feedback members, in which the moving power-distribution member (7) comprises means (8) of trapping the feedback member (6), allowing at least a movement of one trapped part of the feedback ...  
WO/2013/051741A1
Disclosed is a control system for preventing unnecessary pressure loss by switching a priority control valve to a throttle state or a throttle-release state, depending on a load amount that is generated from a hydraulic generator, when s...  
WO/2013/048283A1
The electrohydraulic amplifier comprises a summing operational amplifier with two inputs, a single-stage or two-stage controlling electrohydraulic amplifier, an input of which is connected to an output of the summing amplifier and which ...  
WO/2012/126376A1
Disclosed is a driving device, especially a hydraulic reciprocating servo control device, with the control device comprising a hydraulic driving system and a control system, which is characterized in that the hydraulic driving system com...  
WO/2012/102488A3
The present invention pertains to a hydraulic system for a construction machine having an electronic hydraulic pump. More specifically, the hydraulic system temporarily drives the construction machine when the operation of the electronic...  
WO/2012/102488A2
The present invention pertains to a hydraulic system for a construction machine having an electronic hydraulic pump. More specifically, the hydraulic system temporarily drives the construction machine when the operation of the electronic...  
WO/2012/087048A3
The present invention relates to a method for controlling a hydraulic pump in an excavator, and more particularly, to a method for controlling a hydraulic pump in an excavator for actuating an engine at the best engine revolution speed s...  
WO/2012/087048A2
The present invention relates to a method for controlling a hydraulic pump in an excavator, and more particularly, to a method for controlling a hydraulic pump in an excavator for actuating an engine at the best engine revolution speed s...  
WO/2012/081197A1
Provided is an apparatus for controlling an elastic actuator drive mechanism, which determines abnormality of an output measuring means (8) by being provided with an abnormality determining means (49), which determines whether an output ...  
WO/2012/074145A1
Disclosed is a hydraulic pump control system for minimising flow loss by optimally limiting the discharge flow volume of the hydraulic pump when an upper swivel body is made to swivel abruptly. The hydraulic pump control system according...  
WO/2012/053672A1
Disclosed is a hydraulic system for a construction machine, which makes it possible to adjust the geometric position of a working device comprising a boom and an arm by means of a single manipulation lever, thereby enabling a leveling/fl...  
WO/2012/034165A1
An ultra high pressure pump comprising a servo motor coupled to a piston having a head arranged within a cylinder to define a pumping chamber, whereby the servo motor rotation causes reciprocal displacement of the piston to pressurise fl...  
WO/2012/021184A1
A unitary, closed center, electro-hydraulic, rack and pinion power steering system 10 is disclosed. The system 10 includes a pinion housing 18 carrying an input pinion 12 and an input rack 20. A main housing 50 carries an electric motor ...  
WO/2012/013373A1
The invention relates to a method for operating a hydraulic driving device (10) with a hydraulic cylinder-piston unit (12) having a working piston (16) which is movable along a working direction (14) between an upper dead centre and a lo...  
WO/2012/015087A1
Provided are a swirl flow control system for construction equipment and a method of controlling the same. The swirl flow control system includes: an engine; a plurality of actuators and rotation motors for a working device including a bo...  
WO/2012/002586A1
Disclosed is a flow control system for a hydraulic pump of construction machinery, which is capable of variably controlling the discharge flow from a hydraulic pump in accordance with load pressure that occurs at a hydraulic actuator of ...  
WO/2011/148523A1
An operation time period setting device is applied to a fluid pressure actuator driving system (10) comprising: an actuator body (13) provided with a piston (14); supply/discharge flow paths (17a, 17b); and electrically operated flow rat...  
WO/2011/137199A1
A pump control assembly includes a fluid pump assembly (12) having a fluid pump (20) and a load sensing valve. The fluid pump includes a fluid inlet (24) and a fluid outlet (26). The fluid pump includes a variable displacement mechanism ...  
WO/2011/114974A1
Disclosed is a control device for a work machine on a construction vehicle such that a bucket cylinder is stopped at a target position, with high accuracy achieved in a bucket cylinder length, and with shock held down to a low level. A b...  
WO/2011/115902A1
A fluid motor (2,60) and a control system that includes an electronic controller (30) and a mechanical servo to position a fluid motor (38). The electronic controller is combined with a non - electronic self storing position feedback dev...  
WO/2011/095351A1
The invention relates to a fluid-actuated actuating drive on a valve comprising a base unit (2) having an electro-fluidic signal converter and a fluidic controller and at least one linear actuator (4) that can be actuated using the fluid...  
WO/2011/056302A2
An electro-hydraulic control system for pump (22) control is disclosed. The hydraulic actuator (50) is configured to control the inclination of a swashplate. The position of the hydraulic actuator (50) is controlled by controlling the fl...  
WO/2011/056302A3
An electro-hydraulic control system for pump (22) control is disclosed. The hydraulic actuator (50) is configured to control the inclination of a swashplate. The position of the hydraulic actuator (50) is controlled by controlling the fl...  
WO/2010/097133A1
The invention relates to a storage compartment having a cover (102) for closing a removal opening and having a device (112) for damping an opening motion of the cover, wherein the device comprises an elastic element (118) that is deforme...  
WO/2010/084043A1
The invention relates to a hydraulic drive device, comprising a piston which is guided displaceably in a cylinder chamber along a working axis and adjoins a working pressure chamber that can be pressurized by hydraulic fluid, and compris...  
WO/2010/082452A1
The inner pressure of an actuator is measured by a pressure measuring means (9). The amount of displacement of a movable mechanism is measured. The target value and the measured value of displacement are input, and a positional error i...  
WO/2010/034804A1
A system for adjusting the position of a control member of a power plant has a hydraulic fluid operated hydraulic actuator (H) provided with a displaceable member (5) connected to the control member (2), and having operating parameters; ...  
WO/2010/032743A1
Disclosed is a feedback control device for stroke of an actuator driven by a working fluid, that can compensate the aging or the like of a flow control valve for controlling the working fluid, and executes a precise control of a stroke b...  
WO/2010/012866A1
The invention relates to a rotating apparatus, which comprises a hydraulic or pneumatic actuator (4, 5) movable back and forth, a control valve with an inlet channel connected to pressure, a discharge channel connected to smaller pressur...  
WO/2009/146148A3
A locking mechanism includes a hydraulic actuator component and an electronic actuator component that are arranged coaxially, each of the actuator components being arranged to control a locking member that retains a movable component. In...  

Matches 1 - 50 out of 3,856