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Matches 651 - 700 out of 33,295

Document Document Title
WO/2013/125079A1
A hydraulic drive system, wherein: a shuttle valve (51) connects a second flowpath (18) and a drain flowpath (52), when the oil pressure in a first flowpath (17) is greater than the oil pressure in the second flowpath (18); and the shutt...  
WO/2013/126312A1
A hydraulic system (16) is disclosed for use with a machine (10). The hydraulic system may have a tank (28), a motor (22) with a fluid inlet and a fluid outlet, and a pump (18) configured to draw fluid from the tank and discharge the flu...  
WO/2013/123792A1
A hydraulic control system comprising an oil cylinder (1). A small chamber of the oil cylinder is connected to a first oil line (11); a large chamber of the oil cylinder is connected to a second oil line (12). The first oil line (11) is ...  
WO/2013/121111A1
Invention relates to a valve arrangement (30) for controlling gas flow in a turbocharged internal combustion piston engine (12) comprising at least two parallel valve units (30.1...30.N), characterized in that a first group of the parall...  
WO/2013/121922A1
Construction machinery is provided which can significantly reduce fuel consumption through the efficient use of recovered energy. The construction machinery includes: a first hydraulic pump (3) and a second hydraulic pump (9) for dischar...  
WO/2013/117052A1
A hydraulic pumping system for concrete pumping equipment, and concrete pumping equipment comprising the same, comprising a first main oil cylinder (1), a second main oil cylinder (2), a main oil pump (10) alternately supplying oil for t...  
WO/2013/115057A1
A structure for an automatic transmission control valve body (1) configured by inserting a separating plate (30) between main valve bodies (10, 20). The openings of the grooves (10a, 20a) formed in the respective opposing surfaces of the...  
WO/2013/114556A1
A hydraulic device (1) wherein an operating cylinder (2) and an acceleration cylinder (3) are equipped with pistons (5, 12), rods (6, 13), and tubes (4, 11), with the tubes (4, 11) partitioned into rod-side compartments (8, 15) and botto...  
WO/2013/113317A1
The present invention relates to a system (2) for control of a hydraulic system primary for pitch control of at least one rotor blade for a windmill which pressure source (4) through valves are connected to at least a first port (28) in ...  
WO/2013/115986A1
A hydraulic system includes a pump (22) that draws fluid from a reservoir (24) and an actuator (26) having a first port and a second port. A metering valve arrangement (28) controls fluid flow through the actuator and includes a meter-in...  
WO/2013/115053A1
This hybrid construction machine is provided with: a first and a second main pump; a first and a second supply path; a first and a second circuit system; a hydraulic motor; a motor generator; an assist pump; a branched converging path co...  
WO/2013/114980A1
This fluid pressure control device is provided with: a first control valve that switches in a manner so that a working fluid is supplied to the pressure chamber of a cylinder upon which the load pressure of a load acts, thus controlling ...  
WO/2013/115140A1
In a hydraulic closed circuit employing a single rod type hydraulic cylinder, delayed response of the flushing valve, and hunting of the flushing valve due to pressure pulsations of the circuit, are prevented, preventing diminished opera...  
WO/2013/111707A1
A hybrid construction machine comprises first and second main pumps, first and second supply passages, first and second circuit systems, a hydraulic motor, a motor generator, an assist pump, a joint passage which is connected to the assi...  
WO/2013/111705A1
A circuit pressure control apparatus comprises: a relief valve which is connected to a connection passage with which an actuator communicates on the upstream side; and a variable throttle which is upstream of the relief valve and the ope...  
WO/2013/108352A1
A hydraulic pressure control circuit having a pressure-boosting opening/closing valve mechanism for supplying a control pressure from a hydraulic pressure source to a predetermined actuator, and a pressure-reducing opening/closing valve ...  
WO/2013/108440A1
[Problem] To provide a hydraulic device with which the power consumption can be greatly reduced. [Solution] Low-pressure operating oil transmitted from a small-capacity pump (6) via an oil supply pipe (13) can be fed into cylinder units ...  
WO/2013/108889A1
This hydraulic control device for a work machine is provided with a drive device for generating a drive force for travel by the work machine, a parking brake device for parking the work machine, an operating unit provided in a cab of the...  
WO/2013/105199A1
A hydraulic control device is configured so as to reduce the loss of power of a pump in combined boom lowering and arm pushing operation. During the single operation of boom lowering, a controller (30) performs single control for increas...  
WO/2013/105357A1
Provided is a drive device with which variation in cylinder speed when the load is reversed can be suppressed, and operability can be improved, in a hydraulic closed circuit system that drives a single-rod cylinder by means of a hydrauli...  
WO/2013/103954A3
A method of controlling a float function of a cylinder 25 having a first side and a second side includes connecting the second side of the cylinder to a reservoir 15; connecting the first side of the cylinder to an output of a pump 20 an...  
WO/2013/099575A1
This hydraulic control device for a forklift includes a hydraulic pump, a single electric motor for driving the hydraulic pump, an outflow control mechanism provided between a lift cylinder and the hydraulic pump, a flow rate control val...  
WO/2013/099710A1
The amount of operation of an operation lever (4a) is detected by a pressure sensor (16) and input into a controller (9), at the lowering operation of a boom (111). The controller (9): finds a target flow rate (QO) for return oil dischar...  
WO/2013/096300A3
A system (20) has a variable displacement pump (50) that supplies pressurized fluid to power a plurality of hydraulic functions (31-36). Each hydraulic function has a control valve (51-56) with a variable source orifice (64) controlling ...  
WO/2013/096096A1
A hydraulic system (200) includes a fluid source (202), a metering valve (212, 286), an actuator (289), and a power reclamation assembly (222). The metering valve (212, 286) includes a standby position, and an actuation position differen...  
WO/2013/095208A1
The invention relates to a method for controlling lowering of an implement (3) of a working machine. The working machine has a hydraulic system (10) comprising a hydraulic cylinder (11) for moving the implement and a first control valve ...  
WO/2013/095926A1
A hydraulic system (200, 300) includes a first hydraulic circuit (201, 301) and a second hydraulic circuit (208, 308). The first hydraulic circuit (201, 301) includes a hydraulic cylinder assembly (202, 302), a pressurized fluid source (...  
WO/2013/089127A1
The present invention addresses the problem of being able to increase the effect of preventing an engine from stalling by reducing the engine load attributable to a fixed-capacity hydraulic pump. A working vehicle (1) provided with a fix...  
WO/2013/090698A1
In various embodiments, valve efficiency and reliability are enhanced via use of hydraulic or magnetic valve actuation, valves configured for increased actuation speed, and/or valves controlled to reduce collision forces during actuation.  
WO/2013/089230A1
The invention addresses the problem of avoiding insufficient flow being supplied to the hydraulic actuator and speed becoming insufficient during light loads in hydraulic machinery such as hydraulic shovels when the engine rotation speed...  
WO/2013/084346A1
A hydraulic control device is provided with: a pressure regulating valve for regulating hydraulic pressure, which is generated by an oil pump, to a working hydraulic pressure required by a control circuit; a signal pressure generating va...  
WO/2013/084457A1
A hydraulic drive device (1) is provided with a pump (11), a steering wheel actuator (16), cargo-handling device actuators (17, 18), a drive instrument (15), a relief valve (36), and an input unit (24). When operating tools (32, 33) are ...  
WO/2013/084456A1
A hydraulic control device (10) is provided with: a hydraulic pump (30) to which steering cylinders (18L, 18R) and boom cylinders (22) are connected in parallel; a steering control valve (34) which controls the direction of hydraulic oil...  
WO/2013/081220A1
Disclosed is a swing relief energy regeneration apparatus in which working oil relieved into a hydraulic tank is stored in a pressure accumulator during swing and deceleration to recycle the stored pressure. The swing relief energy regen...  
WO/2013/078817A1
Disclosed in the present invention is a flow distributing and converging hydraulic control system for an engineering machine, which comprises: a first oil supplying pipeline and a second oil supplying pipeline communicated or disconnecte...  
WO/2013/081874A1
A hydraulic system (23) includes a hydraulic transmission (24) including a hydraulic pump (26) configured to be coupled to a prime mover (12), a hydraulic motor (28) configured to be coupled to an output shaft (32), and fluid lines (46) ...  
WO/2013/080633A1
In order to provide a regeneration control device for work vehicles which is capable of preventing the operational discomfort and uneasiness of an operator by attenuating the disparity between driving performance during regeneration, i.e...  
WO/2013/075447A1
Disclosed is a rotary drilling rig and a device controlling the main hoist lowering speed therefor. The device controlling the main hoist lowering speed comprises: a sensor (1), a controller (3), and a reversing valve apparatus, wherein ...  
WO/2013/073112A1
The cushion valve device (11) comprises a valve block (12). The valve block (12) comprises a first pathway (13), a second pathway (14), and a first discharge pathway (31). The first pathway (13) lies between the first supply-discharge pa...  
WO/2013/069374A1
A closed hydraulic circuit system (100) capable of driving a hydraulic cylinder (3) having a first port (3b) and a second port (3c) comprises: a hydraulic pump (1) which has a first pump port (1a) hydraulically connected to the first por...  
WO/2013/070466A1
A hydraulic circuit (200) including a hydraulic swing motor (16) having a first port (214) and a second port (216). A first motor conduit (210) connected to the first port (214) of the hydraulic swing motor, and a second motor conduit (2...  
WO/2013/066803A1
A machine (10) such as a wheel loader (10) includes a frame (16) and ground engaging propulsion elements (14) coupled with the frame (16). A hydraulically actuated implement system (12) of the machine (10) includes a linkage (34) and an ...  
WO/2013/063997A1
A hydraulic control loop comprises a direction control valve (10) having a bypass throttle loop and an execution element (20) connected to the direction control valve. The hydraulic control loop further comprises a valve (30). The valve ...  
WO/2013/065530A1
The present invention relates to a flow rate control device, and the flow rate control device (10) comprises: a body (16) having first and second ports (12, 14) for supplying and discharging pressurized fluid; a set of first and second s...  
WO/2013/063749A1
Provided is a hydraulic control circuit. The hydraulic control circuit comprises a directional control valve (10) having a bypass throttle loop and an actuator element (20) connected to the directional control valve. The hydraulic contro...  
WO/2013/061129A1
Disclosed is an exemplary hydraulic system including a first fluid circuit 12 and a first pump 18 fluidly connected to the first fluid circuit. The first pump configured to produce a fluid output at a first flow rate when operated at a s...  
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/2013/056545A1
Provided are an energy-recoverable hydraulic actuator and an actuating method. The actuator comprises an electrical energy storage device (1), a controller (2) for an electric motor, the electric motor (3), an element (4), a first hydrau...  
WO/2013/058326A1
The present invention is a power-operated hydraulic operation machine for driving a hydraulic pump via an electric motor to drive an actuator, and also for controlling load sensing using speed control of the electric motor, wherein by re...  
WO/2013/058099A1
The aim of the present invention lies in providing a hydraulic drive system for a work vehicle, in which hydraulic oil can be supplied to an accumulator when a work device is raised, and in which, when the work device is held in a raised...  

Matches 651 - 700 out of 33,295