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WO/2022/158420A1 |
Provided is a technique for detecting clogging in a filter caused by chips more reliably than before. A machine tool capable of machining a workpiece, the machine tool comprising a storage tank for storing coolant, an ejection unit for e...
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WO/2022/142220A1 |
An emergency pumping control packet, a hydraulic system, and a pumping device. The emergency pumping control packet (1) comprises an emergency operation module (11) and a power supply interface module (12); the emergency operation module...
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WO/2022/107540A1 |
This air control circuit equipped with a safety feature is composed of only an air circuit. The circuit comprises a main air line (4) that controls an air device (3) by turning two external pilot–type solenoid valves (5a, 5b) on and ...
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WO/2022/107230A1 |
This air control circuit equipped with a safety feature is composed of only an air circuit. The circuit comprises a main air line (4) that controls an air device (3) by turning two external pilot–type solenoid valves (5a, 5b) on and ...
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WO/2022/079119A1 |
The present invention relates to a pilot control unit (20) for at least one valve drive (2) of a hydraulic valve (1) with a valve slide (5), wherein the valve slide (5) can be adjusted by way of the valve drive (2), in order to supply hy...
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WO/2022/072639A1 |
A control system for a pressure relief valve can include a controller and an actuator. The controller can control the actuator to at least partially open a main valve of the pressure relief valve and can determine one or more operational...
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WO/2022/013327A1 |
Method and system for releasing the residual pressure of a hydraulic circuit of a work machine and work machine including the system Method for releasing the residual pressure of a hydraulic circuit of a work machine, the hydraulic circu...
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WO/2022/000008A1 |
The invention relates to a switching means of working fluid for an independent polarity of the feed and return of working fluid for consumers. In order, in the case of an incorrect polarity of the connectors in hydraulic networks, to ens...
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WO/2021/256044A1 |
A liquid supply apparatus in the present disclosure supplies a liquid to at least one artificial muscle which is actuated when supplied with a liquid. The liquid supply apparatus includes: a liquid reservoir portion for reserving a liqui...
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WO/2021/236745A1 |
A redundant valve manifold system includes at least two automatic valves coupled to one another and at least two automatic isolation valves each corresponding to one of the at least two automatic valves. Each of at least two automatic is...
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WO/2021/231276A1 |
Universal control circuitry (500) for an electro-hydraulic valve actuator system (105, 105', 105'') includes logic gate circuitry to control one or more of a closing solenoid valve (6), an opening solenoid valve (5), an emergency shutdow...
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WO/2021/220765A1 |
[Problem] To provide a drive device and a fluid pressure–driven valve that make it possible to detect the state of the inside of a cylinder and to improve the precision of abnormality diagnosis and predictive maintenance. [Solution] A ...
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WO/2021/215772A1 |
The present invention relates to a module that is for diagnosing the integrity of an actuator and has an oil cleaning function, wherein not only can the module be coupled at a valve position of the actuator to perform an oil cleaning fun...
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WO/2021/210545A1 |
Provided is a pneumatic actuator control device with which it is possible to avoid complications with wiring, etc. that can arise when using an auto switch. This pneumatic actuator control device (10) comprises: detectors (61, 62, 71, ...
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WO/2021/194922A1 |
A system for remotely opening and closing a process equipment bolt flange joint may include a hydraulic cylinder actuator assembly for attaching to the flanges of a bolt flange joint to open and close the joint by operation of a remote h...
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WO/2021/188546A1 |
The subject matter of this specification can be embodied in, among other things, an electrohydraulic positioning control system that includes a shuttle valve configured to direct fluid flow between a selectable one of a first fluid port ...
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WO/2021/188531A1 |
The subject matter of this specification can be embodied in, among other things, a method that includes actuating a closure member at a predetermined first velocity a predetermined first number of cycles between a first configuration and...
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WO/2021/180508A1 |
The present invention relates to a hydraulic valve module (1) having at least one hydraulic valve (4) with a valve slide (5) which can be adjusted by way of an electric actuator (3) in order to supply hydraulic lines (22) with hydraulic ...
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WO/2021/165150A1 |
The hydraulic servo actuator contains a piston rod (3) and two pistons (K1, K2) which are arranged in tandem thereon and each of which is movably mounted in a separate hydraulic cylinder (Z1, Z2). Two separate redundant hydraulic circuit...
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WO/2021/168127A1 |
A hydraulic control assembly includes means for holding pressure in a cylinder to inhibit boom or arm drop of a machine in the event that a hose between the cylinder and a main control valve (MCV) ruptures. The pressure holding means of ...
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WO/2021/151457A1 |
A system and method for detecting the functional state of a piloted or direct-operated isolation valve in a hydraulic circuit is presented. In some examples the hydraulic circuit is a steering circuit and the isolation valve provides sel...
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WO/2021/123029A1 |
The invention relates to a method for testing a solenoid valve (140) on a safety valve (100) by means of a single-acting fluidic drive (130) and a positioner (120). The pressure (180) in the drive fluid is first increased by a first pres...
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WO/2021/116219A1 |
The present invention relates to a device for detecting leakage of a hydraulic cylinder, comprising: a first pressure sensor for capturing a pressure value in a first pressure chamber of a hydraulic cylinder; a second pressure sensor for...
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WO/2021/103578A1 |
A pneumatic hydraulic safety system, comprising an air storage tank (4), a pressure switch (9), a two-position two-way switching valve (10), a three-position five-way reversing valve (11), a shuttle valve (12), a two-position two-way pne...
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WO/2021/084078A1 |
The invention relates to a method for establishing termination criteria for a partial-stroke test of a safety valve, comprising the following steps: a) a partial-stroke test is carried out at a time at which the safety valve is functiona...
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WO/2021/083724A1 |
The present invention relates to an electrohydraulic system (100) for a valve, which system is configured to rotatingly drive a valve, the system (100) comprising the following: an output shaft (10), which can be directly connected to th...
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WO/2021/084784A1 |
[Problem] To provide a failure diagnostic system and a failure diagnostic method for detecting failure of a valve to hold a liquid. [Solution] A failure diagnostic system (10) provided with: a hydraulic cylinder (20); a tank (22) in whic...
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WO/2021/082274A1 |
A hydraulic control system (1), an outrigger device, and a control method. The hydraulic control system (1) comprises: an oil cylinder (13); a main reversing valve (11) and an auxiliary reversing valve (12), the first valve port (111) of...
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WO/2021/081119A1 |
The subject matter of this specification can be embodied in, among other things, a fluid valve assembly that includes a first fluid port, a second fluid port, a third fluid port, a valve spool configured to be positioned at a first posit...
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WO/2021/070736A1 |
Provided is a construction machine that can measure a minute leakage flow rate of a unilateral tilt-type variable displacement hydraulic pump. In a state in which communication between a discharge oil passage of the hydraulic pump and ...
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WO/2021/065454A1 |
A robot device according to the present disclosure includes at least one artificial muscle that operates when a supply of liquid is received, and a liquid supply device for supplying liquid to and discharging liquid from the artificial m...
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WO/2021/063825A1 |
The invention relates to a hydrostatic fast-acting control system comprising a hydraulic cylinder, the piston of which is loaded by a pressure equivalent in the direction of a working position and can be acted upon by a pressure medium c...
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WO/2021/059019A1 |
The present disclosure relates to the field of fluid process systems and discloses a manifold system (300) for fluid delivery. The system (300) comprises a first set of Solenoid Valves (SOVs) [(V1-V2),(V1 -V3)], a second set of SOVs [(V4...
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WO/2021/054966A1 |
A hydraulic control module includes a valve housing defining a hydraulic circuit, and a bore extending along a bore axis. The hydraulic control module also includes a solenoid-actuated valve including a solenoid portion. The solenoid por...
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WO/2021/054124A1 |
A hydraulic unit (1) comprises a hydraulic circuit (10) and a control device (20) for controlling the hydraulic circuit (10). The hydraulic circuit (10) comprises: a hydraulic pump (12) for supplying working oil to a hydraulic actuator (...
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WO/2021/049093A1 |
Provided is an electro-hydraulic actuator system comprising an emergency shut-off circuit that has a simple configuration and operates stably. This electro-hydraulic actuator system comprises: a hydraulic cylinder 24 having a piston 25 t...
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WO/2021/044660A1 |
The present invention is capable of preventing, in advance, the damage of hydraulic parts of a working machine due to the performance deterioration of an operating oil even when the operating oil of a hydraulic system is changed and beco...
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WO/2021/044526A1 |
Provided are a multiple valve device that enables the discovery of contaminants mixed into a working fluid, and a cargo handling device equipped with this multiple valve device. The multiple valve device (10) is provided with: a priority...
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WO/2021/040515A1 |
The present invention relates to a method for selectively coupling or uncoupling a coupling with a release, arranged between the supply conduit and a cylinder, on the basis of pressure in a supply conduit, comprising the steps of: - prov...
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WO/2021/041775A1 |
Embodiments of the invention provide a ram assembly for a hydraulic tool. The ram assembly includes a ram piston having a ram cavity. The ram piston receives a hydraulic pressure reaction force. The ram assembly further includes an overl...
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WO/2021/021455A1 |
Manual hydraulic override pumps for use with actuators are described herein. An example apparatus includes a manifold including a reservoir port to be fluidly coupled to a reservoir of fluid, a pump port to be fluidly coupled to a pump, ...
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WO/2021/013295A1 |
The invention relates to a pneumatic or hydraulic piston rod cylinder (I) having a cylinder (2) and a piston (3) adjustable therein in the longitudinal directionr, which piston is coupled to a piston rod (4) protruding out of the cylinde...
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WO/2021/013296A1 |
The invention relates to a pneumatic or hydraulic piston rod cylinder (1) comprising a cylinder (2) and at least one first piston (3.1) which can be adjusted therein in the longitudinal direction thereof, and which is coupled to a piston...
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WO/2020/263479A1 |
A power transfer unit includes a first hydraulic circuit, a second hydraulic circuit fluidly connected to the first hydraulic circuit, a pump and motor assembly fluidly connected between the first hydraulic circuit and the second hydraul...
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WO/2020/240096A1 |
The invention relates to a method and arrangement in the condition monitoring of gaps in the operating devices of a point-controlled set of booms in a work machine, in which the set of booms comprises several consecutive parts (10, 14. 1...
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WO/2020/235242A1 |
A hydraulic system that comprises: an electromagnetic valve having a valve spool that slides inside a housing and moving the valve spool to a position corresponding to an input operation command; and a control device that outputs operati...
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WO/2020/223513A1 |
A CO2 low-pressure shut-off system is described. The low-pressure shut-off system may include a low-pressure shut-off valve including a first valve inlet, a second valve inlet and at least one valve outlet, a solenoid valve including a v...
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WO/2020/194528A1 |
[Problem] To provide a failure diagnostic system and a failure diagnostic method for identifying the location of a failure in a hydraulic device. [Solution] A failure diagnostic system (10) comprises: a first pressure measurement unit (4...
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WO/2020/179725A1 |
A landing gear lifting/lowering EHA system (10) is provided with: a hydraulic actuator (2) that elevates/lowers landing gear of an aircraft; at least one electric hydraulic pump (31, 32); a hydraulic path (101); pressure sensors (38, 39)...
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WO/2020/162353A1 |
This hydraulic drive system comprises a variable-capacity first hydraulic pump, a first regulator having a first proportional valve, a second hydraulic pump that discharges hydraulic fluid, a switching valve, a control device, and a malf...
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