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WO/2021/219472A1 |
The invention relates to a rotating fluid distributor (60) which comprises a fixed stator (62) and an external rotor (64) rigidly connected to the carousel (32) which comprises at least one treatment port (66A) connected to at least one ...
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WO/2021/213356A1 |
An electronically controlled hydraulic system (200) and an agricultural machine having same. The electronically controlled hydraulic system (200) comprises a hydraulic assembly (10), a power output device (40), a fluid (50) that can be t...
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WO/2021/216214A1 |
A hydraulic circuit is disclosed. The hydraulic circuit may include a hydrostatic pump to provide, at a flow rate, a fluid to a hydraulic motor, wherein the hydrostatic pump has a displacement, and wherein the hydraulic motor drives a sw...
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WO/2021/213400A1 |
An electric control hydraulic system (200) and a hydraulic drive method; the electric control hydraulic system (200) comprises a hydraulic assembly (10), a power output device (40), oil (50) capable of being transmitted between the hydra...
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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/2021/213399A1 |
Disclosed is an electronically controlled hydraulic system, comprising a hydraulic assembly (10), a power output device (40), oil fluid (50) capable of being transmitted between the hydraulic assembly and the power output device, a hydra...
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WO/2021/204319A1 |
The invention relates to a device for holding a stem of a hydraulic cylinder in position, comprising a hydraulic block having a primary check valve (22) and a secondary check valve (23) connected in series, the latter comprising a second...
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WO/2021/201145A1 |
The present invention provides a fluid servo valve in which the supporting rigidity of a movable plate is not easily affected by assembly accuracy and component accuracy and little variation in basic valve characteristics occurs during m...
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WO/2021/202106A1 |
A hydraulic system controller (310) is disclosed. The hydraulic system controller may determine a maximum active circuit pressure of a set of active hydraulic circuits (220) of the hydraulic system (200), wherein the hydraulic system inc...
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WO/2021/184850A1 |
A hydraulic operating mechanism and a hydraulic control valve. The hydraulic operating mechanism comprises a working cylinder and the hydraulic control valve; the hydraulic control valve comprises a valve body, a valve core (4), and a dr...
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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/2021/184848A1 |
Disclosed are a hydraulic operating mechanism and a control valve thereof. The control valve of the hydraulic operating mechanism comprises a high-pressure oil port, working oil ports and a low-pressure oil port, and the control valve fu...
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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/2021/179356A1 |
A transverse vibration rolling system for a double-layer metal composite ultra-thin strip and a manufacturing method. The transverse vibration rolling system comprises a first roller (1), a second roller (2), a first hydraulic vibrator (...
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WO/2021/180960A1 |
The invention relates to a servovalve (100) with a pilot stage (20), comprising two hydraulic elements (30, 6) which are movable relative to one another in order to displace a power distribution member (2), the pilot stage (20) comprisin...
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WO/2021/174931A1 |
Disclosed are a device and system with a control logic for automatically switching between high and low pressure, and a control method therefor. The device with a control logic for automatically switching between high and low pressure co...
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WO/2021/170265A1 |
The invention relates to a valve module (1) for attachment to a valve module support (2), said valve module (1) being disc-shaped, extending in a longitudinal direction (x), and being divided into a plurality of longitudinal portions adj...
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WO/2021/169175A1 |
An oilway structure for achieving precise control of a double-acting cylinder, comprising a double-acting cylinder (1), an oil inlet pipeline (2), an oil outlet pipeline (3), a first accumulator (71), and a second accumulator (72). One e...
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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/2021/168036A1 |
A pneumatically controlled flow booster includes a booster valve plug position sensor that enables control of the flow booster in a feedback loop, for example by a pneumatic valve positioner, thereby providing accurate, high speed, high ...
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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/2021/160342A1 |
PROBLEM: To achieve improvement in work efficiency of calibration work and improvement in calibration accuracy, by performing control so that the time taken to increase the sweep of an applied current becomes substantially constant, upon...
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WO/2021/154369A1 |
An example pressure compensator valve includes: a compensator spool; a first piston coupled to a distal end of, and axially-movable with, the compensator spool; a second piston disposed at a proximal end of the compensator spool, wherein...
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WO/2021/144143A1 |
PROBLEM: To enable to arbitrarily change a hydraulic pump which supplies pressure oil to a hydraulic actuator at first in a hydraulic control system equipped with the hydraulic actuator using both first and second hydraulic pumps as a pr...
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WO/2021/141874A1 |
An example valve includes a first port fluidly coupled to a source of fluid, a second port fluidly coupled to an actuator, a third port fluidly coupled to a reservoir, and a fourth port configured to export a load-sense (LS) fluid signal...
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WO/2021/136691A1 |
A valve arrangement is described comprising a housing arrangement (12), (18), a first spool valve (1a, 1b) having a first spool (3a, 3b) and a second spool valve (2a, 2b) having a second spool (4a, 4b), wherein the first spool valve (1a,...
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WO/2021/138679A1 |
The invention of the present disclosure, comprises a system including at least one hydraulic intensifier circuit accepting a supply pressure and returning a boosted pressure that is higher than the supply pressure, and at least one regul...
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WO/2021/123653A1 |
The security unit (9) ensures, by blocking the hydraulic flow, that the rod of a single- or double-action cylinder is held in position. It comprises one or two hydraulic passages (43) through which each of the chambers of the cylinder is...
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WO/2021/121170A1 |
An electro-hydraulic control valve for a hydraulic operating mechanism, and an electromagnetic pilot valve (600/700/800/900) and a pilot valve thereof. The pilot valve comprises: a valve body (607); a valve sleeve, one end of which is pr...
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WO/2021/121285A1 |
A static pressure vibration system, comprising: a hydraulic cylinder (40), wherein a static pressure cavity (570) and a dynamic load cavity (580) are formed in the hydraulic cylinder (40), the static pressure cavity (570) is provided wit...
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WO/2021/122990A1 |
Multi-rotor hydraulic drone (1) comprising: - a plurality of hydraulic motors (6) each receiving a pressurised fluid, - propellers (5) driven by the hydraulic motors (6), - at least one hydraulic pump (10) driven by at least one motor (1...
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WO/2021/118064A1 |
A non-powered fluid pressure-intensifying apparatus according to the present invention, which can itself intensify the pressure of introduced fluid and discharge same without a separate external power supply or adjustment device, may com...
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WO/2021/118607A1 |
A hydraulic power unit ("HPU") with a submerged motor for moving hydraulic fluid between a first chamber and a second chamber of a hydraulic device is provided. The HPU may comprise a tank for storing hydraulic fluid, wherein the tank ho...
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WO/2021/116830A1 |
A hydraulic valve for an excavator is disclosed, which is able to limit hydraulic load losses and deformation of the valve due to overpressure, with a valve block (1) made of a single piece in which a first conduit (13) connects two open...
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WO/2021/115634A2 |
A system and method for detecting faults and optimizing power usage of solenoid valves. The method includes obtaining a current signature of the solenoid coil, using a dedicated circuit to detect various features and using a pulse width ...
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WO/2021/116373A1 |
The invention relates to a damping system for hydraulic systems with a hydraulic valve which is to be damped and which has at least one first connector designed as a control connector, a second connector designed as a connector for the h...
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WO/2021/109649A1 |
A liquid supply system for an emulsion pump station comprises a bottom support component (1). An accumulator (2), a liquid supply component (3), and a liquid collection component (4) are disposed on the bottom support component (10). A f...
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WO/2021/104966A1 |
The present invention relates to an electrohydrostatic system having a hydraulic cylinder comprising a first cylinder chamber and a second cylinder chamber. Furthermore, the electrohydrostatic system has a fluid hydraulic supply device f...
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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/2021/091349A1 |
The present invention provides an air control system comprising: air pockets in which air is stored; a supply pump for supplying air to the air pockets; a discharge pump for discharging the air stored in the air pockets; a supply solenoi...
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WO/2021/089917A1 |
An electro-hydraulic actuator (1) comprises a cylinder (2) comprising at least three chambers, a piston (3) configured to move within the cylinder and a rod (4) attached to the piston. At least two of the chambers comprise working chambe...
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WO/2021/091084A1 |
The present invention provides an improved leverage device of a hydraulic pressure remote control valve having a leverage contact face(46) characterized by being constructed with at least an involute curve(53) enabling that a contact poi...
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WO/2021/092101A1 |
A hydraulic tank (150) for a machine (10) is disclosed herein. The hydraulic tank (150) includes a casing (155) defining an interior space and having an outer surface (156), an inner surface (157) opposite the inner surface (157), and a ...
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WO/2021/090201A1 |
The present invention relates to an integrated multi-connection hydraulic group (1) for connecting the hydraulic circuit on- board an operating machine to a plurality of hydraulic and/or electrical and/or pneumatic lines for the connecti...
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WO/2021/088391A1 |
A hydraulic system for achieving a sequential operation of an engineering vehicle mechanism, comprising: an electric motor (1), a hydraulic pump (2), an electromagnetic reversing valve (3), a sequence valve I (4), a hydraulic execution e...
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WO/2021/084493A1 |
An actuating device (10) comprises a first (14) and a second (16) working chamber supplied with pressurized air from a source (18) of pressurized air by means of a first (20) and a second (22) pressure regulator, respectively, for regula...
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WO/2021/086859A1 |
A hydraulic actuator system includes a load sense assembly that is configured to transmit a load sense signal to a variable pump to vary a flow of pressurized fluid from the variable pump in response to the load sense signal to generate ...
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WO/2021/086201A1 |
Disclosed is a spool valve to valve a fluid between at least one inlet port and at least one outlet port, having a bore with a spool operably associated therein. The bore has one or more inlet ports and at least one outlet port. Located ...
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WO/2021/082275A1 |
The present application provides a leveling control system and method for a working bucket of an aerial lift truck, and an aerial lift truck. The leveling control system comprises: an inclination measurement device, which measures the in...
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