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WO/2015/078089A1 |
A circular-flow power machine is constituted, as desired, according to variations in force, rate of flow, and number of strokes, and by utilization of limitless increase in power via serial-connection means and an increase in number of s...
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WO/2015/075228A2 |
The invention relates to a control system with at least two channelāguiding parts and an intermediate plate arranged between the two channelāguiding parts. The intermediate plate comprises at least two flat metallic gasket layers as ...
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WO/2015/074674A1 |
The invention relates to a valve arrangement for manipulating at least one fluid flow, having a control device (17) and having at least one valve device (18), wherein the control device (17) has a bus interface (20) for a connection to a...
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WO/2015/074170A1 |
A pressure compensation valve comprises a valve body (1), a valve sleeve (2) fixedly mounted on the valve body (1), and a spool (3) disposed in a valve hole (4e) of the valve body (1) and capable of moving. The valve sleeve (2) and the s...
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WO/2015/073309A1 |
Apparatus to bias spool valves using supply pressure are disclosed. An example apparatus includes a housing (106) of a spool valve, the housing including a first port (118) to receive a fluid at a supply pressure. The example apparatus f...
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WO/2015/073329A1 |
A hydraulic system (600) and method for reducing boom dynamics of a boom (30), while providing counter-balance valve protection, includes a hydraulic actuator (110), first and second counter-balance valves (300, 400), first and second co...
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WO/2015/071675A2 |
A servo valve (1) for use with an actuator. The servo valve comprises a first set of internal ports (4) including a first inlet port (4a), a first outlet port (4c), a first A-control port (4b) and a first B-control port (4d) and a second...
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WO/2015/068179A1 |
Booster valve (4) for pneumatic circuits, comprising: a hollow body (5), a pilot flow inlet/outlet gap (15) communicating directly with a control volume (16), an inlet/outlet gap (45) communicating with an actuator and communicating dire...
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WO/2015/064785A1 |
Disclosed is a hydraulic circuit for construction equipment, having a floating function for ground leveling work, which can be implemented by a main control valve. According to the present invention, provided is a flow control valve for ...
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WO/2015/064782A1 |
The present invention relates to a hydraulic system of construction equipment, having a float function, comprising: a hydraulic pump and a pilot pump for supplying hydraulic oil for the operation of construction equipment; a remote contr...
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WO/2015/061382A1 |
A system, method, and computer readable medium for controlling a remote valve and facilitating temporarily driving or activating a battery-powered pilot valve assembly to place an operatively coupled output valve in a switch position. On...
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WO/2015/061385A1 |
A system and method for controlling a remote valve includes temporarily driving or activating a battery-powered pilot valve assembly to place an operatively coupled output valve assembly in a switch position. A processor energizes a bist...
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WO/2015/055276A1 |
The invention relates to a control device, in particular for hydraulically controlling components of mobile working machines, consisting of at least one pressure supply connection (P) and a tank or return connection (T) in addition to tw...
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WO/2015/051294A1 |
This disclosure includes hydraulic apparatuses and methods for redundant actuation of a hydraulic device. Some apparatuses include a hydraulic device having a first hydraulic actuator and a second hydraulic actuator, wherein each of the ...
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WO/2015/043377A1 |
An auxiliary hydraulic system and a concrete pumping device. The auxiliary hydraulic system comprises a main oil pump (1), a stirring motor (7), a water-cleaning motor (9), a first reversing valve (6), and a second reversing valve (8). A...
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WO/2015/039734A1 |
The invention relates to a valve device (200) comprising at least one tank pressure port (218), a first pressure port (212), a second pressure port (214), and a pressure shut-off valve (224), which is switched between the individual port...
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WO/2015/041945A1 |
A rotary valve comprises a bushing and a cylindrical spool rotatably received by the bushing. The rotary valve avoids redundant control edge pairs by having exactly one first supply edge pair (P-Cl) for controlling a first fluid supply p...
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WO/2015/032470A1 |
A load-holding valve (1) having at least one main control piston (39) which is guided longitudinally displaceably in a single-piece or multiple-piece valve housing (29) and a non-return piston (43), wherein, in switching positions, in th...
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WO/2015/032492A2 |
The invention relates to a first valve component (10), in particular a pressure compensator-type component, comprising a valve slide (16) that can be guided in a valve housing (12) in a longitudinal direction, said valve slide having a c...
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WO/2015/028112A1 |
A valve, in particular proportional pressure regulating valve, having a valve piston (12) which is guided in longitudinally movable fashion in a valve housing (10) and which can be actuated by means of an operation device (14), wherein t...
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WO/2015/025094A1 |
The reversible hydraulic pressure converter with tubular valves (1) comprises a medium-pressure stage (44) consisting of a medium-pressure cylinder (2) and a medium-pressure double-acting piston (3), the position of which is transmitted ...
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WO/2015/024152A1 |
Disclosed is an energy-recycling hydraulic control main valve, which is provided with end covers (1), a valve core (2), a left one-way valve (3) and a right one-way valve (4), wherein each of the two ends of the valve core (2) is provide...
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WO/2015/022135A1 |
The invention relates to a valve apparatus having a primary valve (22) and a pilot valve (25), which comprises a closing body (42), which can be actuated by a magnet apparatus having an armature (30), in order to connect a first pressure...
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WO/2015/023010A1 |
Disclosed is a flow control valve for construction equipment capable of effectively operating travelling and working apparatuses when the construction equipment performs complex work by operating the working apparatus while travelling. T...
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WO/2015/018730A1 |
The invention relates to an intermediate plate (30) for installing between two channel sides (24, 26) of housing parts (12, 14) of a controller for loads operated by a pressure medium, which channel sides can be laid against the intermed...
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WO/2015/015155A1 |
A servovalve pilot stage assembly is provided having a first fluid conduit (152) having a first orifice (156), a second fluid conduit (154) having a second orifice (158), a flapper (44) having a deformable first region (176) disposed bet...
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WO/2015/014887A1 |
A valve having a valve piston (13) which can be moved linearly in a valve housing (10) and a linear drive (20) which comprises a stator (21) which is connected immovably to the valve housing (10) and a rotor (22) which can be moved there...
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WO/2015/015154A1 |
A servovalve has a pilot stage (100) having a piezoelectric element (150) actuating a pilot stage spool valve (196), which pilot stage spool valve comprises an output control fluid line to a main stage.
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WO/2015/012423A1 |
Disclosed is a hydraulic circuit for a construction machine, for preventing the loss of pressure at the time of complex work. A hydraulic circuit for a construction machine, according to the present invention, comprises: variable displac...
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WO/2015/009922A1 |
Embodiments of a directional valve assembly (300) that provides a single device with functionality of a two-position design for automated operation and functionality of a three-position design for manual operation. The embodiments can in...
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WO/2015/007566A1 |
The invention relates to a valve device, comprising a main valve (2) and a pilot valve (3), which comprises a closing element (28), which can be actuated by a magnet device having an armature (30) in order to connect a first pressure con...
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WO/2015/007565A1 |
The invention relates to a valve device having a main valve (2) and a pilot valve (3), said pilot valve comprising a closing body (28) which can be actuated by a magnet device having an armature (30), so as to connect a first pressure po...
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WO/2015/004249A1 |
PROBLEM: To provide a working vehicle traveling by an operation, the operation chosen by operators from either an oil-pressured pilot operation which drives a traveling device based on an operation of an oil-pressured pilot controller to...
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WO/2015/005856A1 |
The invention relates to an actuator for axial displacement of an object. The actuator comprises an actuator piston disc that is displaceable in a cylinder volume, an inlet channel (11), a first inlet valve body (15) arranged in the inle...
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WO/2015/000495A1 |
The invention relates to a valve (1), which comprises at least one seal ring (7) arranged in a recess (3) of a valve housing (2), which seal ring has a seal housing (25) having a U-shaped cross-section, in which an annular sealing elemen...
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WO/2015/000496A1 |
The invention relates to a valve (1), which has at least one seal ring (7) arranged in a recess (3) of a valve housing (2), which seal ring has a seal housing (25) having a U-shaped cross-section, in which seal housing an annular sealing...
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WO/2014/208796A1 |
The present invention relates to a hydraulic pressure control device for construction machinery, comprising: a pilot pump; a swing motor for rotary-actuating an upper turning body; a brake control valve for controlling the direction of a...
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WO/2014/208828A1 |
Disclosed are a hydraulic circuit for using a hydraulic fluid in a hydraulic pump in another hydraulic actuator, during levelling and grading work by means of an excavator, and a method for controlling a floating function. A hydraulic ci...
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WO/2014/208787A1 |
Disclosed are a device for controlling a control valve of a construction machine, a method for controlling the same, and a method for controlling the discharge flow rate of a hydraulic pump, for the purpose of controlling the spool switc...
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WO/2014/208795A1 |
Disclosed are a hydraulic circuit for using a hydraulic fluid in a hydraulic pump in another hydraulic actuator, during levelling and grading work by means of an excavator, and a method for controlling a floating function. A hydraulic ci...
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WO/2014/205955A1 |
A modular electro-hydraulic multiway valve employing novel combined slide valve and MINISO CV, comprising a group of one combined three-way slide valve main stage (1-1-0) and a group of two MINISO CV valves main stage (2-1-1-0) with a ca...
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WO/2014/199158A1 |
A method for producing a manifold is disclosed, wherein an additive manufacturing process is used to produce the manifold.
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WO/2014/199157A1 |
A servo valve (1) comprises a fluid inlet (50), a fluid outlet (52) and a cylindrical spool (8). The spool (8) has a surface including a curvilinear groove (11) and is mounted for rotational movement between a first position in which the...
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WO/2014/200131A1 |
Disclosed is a flow rate control valve for a construction machine for controlling operating oil supplied from a hydraulic pump to a hydraulic actuator. A flow rate control valve for a construction machine according to the present inventi...
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WO/2014/195040A1 |
A hydraulic system (1) is provided comprising a group of at least two valves (2a, 2b, 2c) connected to a bus (8), each of said valves (2a, 2b, 2c) comprising a primary memory (9a, 9b, 9c) for storing a set of parameters of the valve (2a,...
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WO/2014/183149A1 |
A diaphragm pump (10) including a body (11) that provides a pair of opposed pump chambers (12) and (13). Mounted in the body (11I) is a piston assembly (14) providing a pair of pistons (15) joined by a transverse piston rod (16) so that ...
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WO/2014/186201A1 |
The present disclosure relates to a valve arrangement (60) for a boom control system (30) or for other control systems for work machine (10) components that may be lowered under gravity. The problem addressed is the prevention of the boo...
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WO/2014/173102A1 |
A pre-tensioning-pre-twisting full-bridge 2D electro-hydraulic proportional directional valve. Two ends of a 2D valve each are connected with a linear electro-mechanical converter (2, 16) through a pressure-torsion coupling and a spring....
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WO/2014/158249A1 |
A control system valve assembly includes a valve port (221), a valve stem (230) in the valve port, and an actuator (240) connectable to the valve stem and actuable to control a flow of hydraulic fluid through the valve port. A method for...
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WO/2014/157946A1 |
The present invention relates to a hydraulic system for construction equipment and, more specifically, to a hydraulic system of which an actuator is controlled by a pump/motor. The hydraulic system for construction equipment according to...
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