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Patent Searching and Data


Matches 501 - 550 out of 33,026

Document Document Title
WO/2014/027621A1
A switching valve for switching between the supply and discharge of operating fluid to and from a cylinder is provided with: a spool mounted in the valve body in a slidable manner; one cylinder port connecting to a piston-side chamber; t...  
WO/2014/024521A1
The circuit has: a directional control valve group including a plurality of directional control valves arranged in tandem on a center bypass passage; and a bleed-off valve arranged on the center bypass passage downstream from the directi...  
WO/2014/024129A2
A supply device of a fluid substance (200) comprises a pneumatic cylinder (211) and a movable dividing wall ( 215 ) located in the pneumatic cylinder (211), which is arranged to separate hermetically the pneumatic cylinder (211) in a fir...  
WO/2014/024129A3
A supply device of a fluid substance (200) comprises a pneumatic cylinder (211) and a movable dividing wall ( 215 ) located in the pneumatic cylinder (211), which is arranged to separate hermetically the pneumatic cylinder (211) in a fir...  
WO/2014/021015A1
A hydraulic drive device performs load sensing control using a pump device, which has two discharge ports and the discharge flow rate of which is controlled by a single pump control device. The hydraulic control device is configured so t...  
WO/2014/017685A1
Disclosed is a hydraulic system capable of reducing the discharge flow rate of a hydraulic pump during the operation of a relief valve in the hydraulic system having the relief valve. The hydraulic system for a construction machine accor...  
WO/2014/017401A1
A steering device for a ship is provided with: first and second electric motors; first and second liquid pumps which are configured to be connected to and driven by the first and second electric motors, respectively, and which are each p...  
WO/2014/017475A1
[Problem] To provide a hydraulic drive circuit that, in a hydraulic drive system widely used in construction machines, industrial apparatuses such as presses, and the like, can achieve high responsiveness, high precision, and high effici...  
WO/2014/013852A1
A hydraulic cylinder (14) lowers a working machine as a consequence of operation oil being discharged from a first chamber (14c) and the operation oil being supplied to a second chamber (14d). An operation oil flow path (15) has a first ...  
WO/2014/010222A1
This tilt angle control device (1) has pressure sensors (51-56), and the pressure sensors (51-56) output to a control unit (60) a pressure command signal that is in accordance with the amount of operation. The control unit (60) outputs a...  
WO/2014/006950A1
A hydraulic circuit for a construction machine is provided with center bypass passages, to which pressurized oil discharged from hydraulic pumps is individually supplied. The hydraulic circuit for a construction machine is provided with:...  
WO/2014/001043A1
A hydraulic drive having a brake valve is disclosed, wherein the pressure acting on the brake valve in the opening direction is limited via a pressure-limiting valve. The latter can be set, for example, in dependence on the rotational sp...  
WO/2014/000858A1
In a machine press with a lower and an upper tool support, a closed hydraulic drive system acts upon the upper tool support. This system has at least one hydraulic drive unit (1), which for its part comprises at least one hydraulic cylin...  
WO/2014/005060A8
A power transfer unit includes a differential gear set (120), first and second pump/motors (220, 240), an electric motor/generator (260), and first and second hydraulic circuits (320,340). The differential gear set (120) includes a first...  
WO/2014/004243A1
The present disclosure relates to isolation and reconfiguration schemes, architectures and methods for use in aircraft hydraulic systems (100). The main hydraulic system (104) of each hydraulic section (102a, 102b) of the aircraft hydrau...  
WO/2014/000386A1
Disclosed is a control method for a hydraulic system. The hydraulic system comprises a variable delivery pump (1) and a plurality of actuating mechanisms (2) driven by the variable delivery pump (1), wherein each of said plurality of act...  
WO/2014/000378A1
A concrete pumping device, and a travel control apparatus and method for a series oil cylinder. The travel control apparatus for a series oil cylinder comprises: a first position detection unit (30) mounted on a first oil cylinder (10) a...  
WO/2014/005060A1
A power transfer unit includes a differential gear set (120), first and second pump/motors (220,240), an electric motor/generator (260), and first and second hydraulic circuits (320,340). The differential gear set includes a first input/...  
WO/2013/189566A1
The invention relates to a hydraulic adjusting device, in particular for use in a power plant, in particular a wind power plant, which has an adjusting function for a working operation and for a special operation. To this end, a double-a...  
WO/2013/190726A1
A work machine, comprising a load sensing system to control the discharge pressure of a hydraulic pump (P1) so that the differential pressure, which is obtained by subtracting the maximum load pressure of a plurality of hydraulic actuato...  
WO/2013/187092A1
A construction-machinery hydraulic circuit having a directional-control-valve group comprising a plurality of directional control valves positioned in tandem in a center bypass channel of the construction machinery, a bleed-off valve pos...  
WO/2013/187091A1
A construction-machinery hydraulic circuit having a directional-control-valve group comprising a plurality of directional control valves positioned in tandem in a center bypass channel of the construction machinery, and a bleed-off valve...  
WO/2013/188797A2
A landing gear system (40) for a trailer is described. The landing gear system (40) includes two jacks (44), each with a first tubular body (46) in which a second tubular body (48) is telescopically mounted, a hydraulic chamber (62) and ...  
WO/2013/179968A1
The valve housing (12) of a multiple valve device (11) is formed so as to be divided into two parts, that is, into a first housing block (13) and a second housing block (14), the first housing block (13) and the second housing block (14)...  
WO/2013/179969A1
A valve housing (12) is divided at the positions of joining surfaces (13B, 14A) into two parts, that is, into a first housing block (13) and a second housing block (14). The first housing block (13) is provided with a first pump-side fir...  
WO/2013/178373A1
The invention relates to a hydraulic system, preferably for actuating and engaging a mobile slurry pump. The hydraulic system comprises a primary circuit, actuating a first hydraulic consumer, which circuit has a hydraulic drive assembly...  
WO/2013/179517A1
According to the present invention, when a lock member is switched from a locked position to a released position, a lock valve switcher switches a lock valve from a locked state to a released state. A misoperation observation part keeps ...  
WO/2013/179502A1
In order to provide a dump trunk that can be precisely guided to a destination even while unmanned without modifications being made to safety-critical parts, the dump trunk is provided with: a manned steering valve (20) for controlling t...  
WO/2013/180753A1
A power machine (100) and a power conversion system (106) for a power machine are disclosed. In an exemplary embodiment, the power conversion system includes a pump (206) configured to provide a source of pressurized hydraulic fluid and ...  
WO/2013/175866A1
With respect to a hydraulic closed circuit system that uses multiple hydraulic pumps, the objective of the present invention is to adjust the flow volume automatically and thus to enable the flow volume balance to be maintained in a sati...  
WO/2013/174716A1
A fluid control system (300) is provided. The fluid control system (300) includes a housing (301 ) with a fluid inlet port (302) configured to be fluidly coupled to a pressurized fluid source (402) and a fluid outlet port (303) configure...  
WO/2013/175699A1
Provided is a device for driving the boom of a construction machine, the device requiring reduced power. This construction machine is provided with: a boom cylinder (6); a variable displacement hydraulic pump (10); a control valve (12) f...  
WO/2013/171801A1
An oil-pressure control system for controlling hydraulic oil discharged from a variable-capacity oil-pressure pump using a closed-center control valve actuated on the basis of operation input from an operation device to supply an oil-pre...  
WO/2013/167286A3
The invention relates to a Kaplan turbine or other continuous flow machine, comprising the following features or components: a hub which supports a plurality of blades by means of drive journals; the drive journals can be rotated around ...  
WO/2013/167225A1
The invention relates to a device for riveting and to a hydropneumatic device (21) for pressure transmission, comprising a working piston (3) and a transmitting piston (17) formed as a double-acting cylinder, for transmitting pressure to...  
WO/2013/167610A1
The invention relates to a method for operating a hydraulic press used for the primary shaping, reshaping, punching or processing of materials or workpieces such as plastic molding compounds, deep-drawing sheets, forged pieces or the lik...  
WO/2013/167286A2
The invention relates to a Kaplan turbine or other continuous flow machine, comprising the following features or components: a hub which supports a plurality of blades by means of drive journals; the drive journals can be rotated around ...  
WO/2013/169996A1
A hydraulic circuit for lifting and lowering a load is disclosed. The hydraulic circuit may include a hydraulic pump (32), a fluid reservoir (34), a load-sense valve (62), and a hydraulic actuator (40) having a first chamber (40A) and a ...  
WO/2013/166875A1
Disclosed is supporting auxiliary equipment for forming a three-way part. A three-way workpiece to be machined is extruded in a main tubular cavity (2) of a mold cavity, such that the workpiece is pushed to extend within a branch tubular...  
WO/2013/164928A1
A hybrid working machine is provided with three pressure sensors (40, 41, 42) for detecting the discharge pressure of a hydraulic pump (2), the output pressure of an engine speed detection valve, and the output pressure of a differential...  
WO/2013/165951A1
A hydraulic actuator system is provided in which operator commanded flow is provided by a variable displacement hydraulic pump with electric control. The system includes an operator interface (5,6) which generates an output signal that i...  
WO/2013/161479A1
A hydraulic circuit (30) for a vehicle equipped with an EHPS system (10) and an oil pressure supply system (20), wherein the oil pressure supply system (20) is equipped with a cylinder (32), which stores oil at a second oil pressure P2 w...  
WO/2013/157295A1
Provided is an external force computation method, with which it is possible to implement, by not having a mechanical sensor, such as a displacement sensor, disposed thereon, miniaturization of a device and ease of sterilization washing. ...  
WO/2013/157125A1
A hydraulic control valve is configured in such a manner that a positive pressure chamber, in which an input port and an output port are open, and a back pressure chamber are respectively formed on one side and the other side of a piston...  
WO/2013/153984A1
A pressure compensation valve that does not fully close at stroke end is used and a travel operation is performed, whereupon pilot primary pressure is reduced and supplied to the remote control valves (34c-34h) of a non-travel operation ...  
WO/2013/150933A1
The valve structure of the present invention is provided with a first valve body, a second valve body attached to the first valve body, and a height setting part for prescribing the position of the second valve body in relation to the fi...  
WO/2013/150613A1
Provided is an oil pressure circuit capable of further improving the depressurizing action responsiveness and depressurizing action reliability of a relief valve device when a main circuit pressure exceeds a predetermined pressure. A rel...  
WO/2013/150985A1
The invention relates to a hydraulic circuit that enables the maintenance of a ganged valve in the hydraulic circuit and that facilitates the implementation of various functions including circuit flushing and trial run, and to a combinat...  
WO/2013/151599A1
[0049] A valve (10) and a hydraulic controller (45) are provider. The valve may combine a rotary-to-linear converter (24) with the hydraulic controller to provide for at least two mechanisms for actuating the valve. Additionally, the val...  
WO/2013/146420A1
This control valve device is provided with: a first working control valve; and a second working actuator-speed-up control valve connected in parallel thereto. The second working actuator-speed-up control valve has: a pilot chamber that s...  

Matches 501 - 550 out of 33,026