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Matches 1 - 50 out of 33,571

Document Document Title
WO/2019/131674A1
This hydraulic drive device is provided with a third boom direction control valve 82 and a rotation direction control valve 81 connected to a third hydraulic pump 33. The hydraulic drive device is further provided with: a second backup d...  
WO/2019/128013A1
A reverse brake control valve for a hydraulic walking system, comprising a valve body (15), a two-position three-way solenoid valve A (1) and a two-position three-way solenoid valve B (3) being provided in the valve body (15), and both t...  
WO/2019/130898A1
Provided is a work machine capable of preventing cavitation when a reverse lever operation, which issues an instruction to swing in a direction opposite to a swing direction during swinging deceleration, is performed in a hydraulic close...  
WO/2019/121416A1
The present invention relates to an actuating drive having a variable-speed pump, as used, for example, in steam turbines, gas turbines and die casting machines. The electrohydrostatic actuating drive (10) has a variable-volume and/or va...  
WO/2019/121770A1
The present invention concerns a hydraulic pressure amplifier device comprising a casing (10) having two chambers (12, 14) of different cross-sections which house a staged piston (20) comprising two piston sections (22, 24) with cross-se...  
WO/2019/120653A1
The invention relates to a piston-cylinder assembly (1), comprising a cylinder housing (3), in which a main piston (2) and at least one dragg piston (11, 12) are axially slidably accommodated. The main piston (2) divides a piston chamber...  
WO/2019/112063A1
This excavator (100) comprises: a lower belt (1); an upper rotating body (3); an engine (11); a main pump (14); a hydraulic oil tank (T); a plurality of hydraulic actuators; and a hydraulic circuit connected to the main pump (14). The hy...  
WO/2019/110122A1
The invention provides an implement attachment device (1000), for selectively attaching an implement to a working machine, comprising - a hydraulic cylinder (1100) comprising a cylinder housing with first and second longitudinal ends, a ...  
WO/2019/106831A1
This working machine is provided with: first and second hydraulic motors; first and second hydraulic pumps provided to supply hydraulic oil to the respective corresponding first and second hydraulic motors; first and second swash plate a...  
WO/2019/103001A1
This hydraulic drive system is provided with a hydraulic pump, a boom control valve, a pivot control valve, a boom operating unit, a pivot operating unit, and a drive control unit, wherein the drive control unit adjusts a pivot drive com...  
WO/2019/102410A1
The invention relates to a press for extruding metal material. The press comprises a hydraulic oil circuit for controlling one or more extrusion pistons movable within corresponding cylinders. Such a circuit comprises a fixed displacemen...  
WO/2019/102625A1
The present invention achieves an outboard motor hoist capable of flexibly changing the raising/lowering speed as called for by the state of an outboard motor. An outboard motor hoist (1) for raising and lowering an outboard motor compri...  
WO/2019/097273A1
This industrial apparatus (2) comprises a pneumatic system (4), a first mechanical device (36) and a second mechanical device (38). The pneumatic system (4) includes: a first pneumatic actuator (6) for commanding the first mechanical dev...  
WO/2019/097758A1
A fluid pressure control device (100) comprises: a first travel control valve (20) that controls the flow of a hydraulic oil supplied to a first travel motor (1); a cylinder control valve (25) that controls the flow of the hydraulic oil ...  
WO/2019/098116A1
A drive system for construction machinery comprising a control device that controls a fuel injection valve so that the actual engine speed is a set speed, a hydraulic circuit that includes a boom cylinder to which hydraulic fluid is supp...  
WO/2019/098103A1
This hydraulic pressure control valve is provided with: a valve body demarcating an internal space, first and second introduction ports, and a discharge port; a valve needle disposed to be capable of moving between a discharge-possible p...  
WO/2019/098104A1
This control device (1) and vibration damping device for railway vehicles sense the properties of a solenoid (19c), (21c), (32), hold a plurality of items of control information respectively suitable for the plurality of solenoids (19c),...  
WO/2019/091553A1
The invention relates to a hydraulic system comprising a plurality of hydraulic units (1), which each have at least one hydraulic consumer (2) in each case having a first hydraulic connection (3) and a second hydraulic connection (4); a ...  
WO/2019/093070A1
Provided is a pivoting work machine that can quickly increase the pivot speed while preventing the pivot parking brake from dragging when pivoting starts. A pivoting work machine comprises: a pivot motor (11); a capacity control device (...  
WO/2019/092206A1
Hydraulic system (120) for a vehicle comprising a vehicle hydraulic circuit (122) inter alia for the hydraulic supply of connection means of an automatic coupling device, wherein the connection means are designed to connect a coupling de...  
WO/2019/087565A1
This hydraulic device is provided with: a hydraulic pump (P1); a motor (M1) for driving the hydraulic pump (P1); a hydraulic cylinder (100) configured so that hydraulic oil is supplied to the inlet port thereof from the hydraulic pump (P...  
WO/2019/078091A1
This hydraulic shovel drive system is provided with: a control valve for a cylinder which causes a swinging portion to swing; an operating device which outputs an operation signal in accordance with an angle of inclination of an operatin...  
WO/2019/076394A1
The invention relates to a hydraulic unit of a reversible plough, comprising a double-acting working cylinder (1) and a hydraulic control unit (2), in which: the piston (3) comprises a radially peripheral seal (8) and at least one piston...  
WO/2019/077201A1
The invention relates to an apparatus and a method for dosing a lubricant into compressed-air supplied to an air motor. According to the invention, the lubricant is stored in a lubricant storage space (17) from which the lubricant is led...  
WO/2019/076391A1
The invention relates to a two-way hydraulic unit comprising a double-acting working cylinder (1) and a hydraulic control unit (2), in which: the piston (3) comprises a radially peripheral seal (8), a first piston ring (9) with a first p...  
WO/2019/069612A1
A first hydraulic circuit (50a) guides hydraulic fluid from a hydraulic pump (34a) to a hydraulic motor (22L) and a first actuator (e.g., a first work machine (86)). A second hydraulic circuit (50b) guides hydraulic fluid from a hydrauli...  
WO/2019/065590A1
A casting device 50 is equipped with an upper frame 5 on which an upper mold 1 is mounted, a lower frame 6 on which a lower mold 2 is mounted, a first hydraulic actuator 22, a hydraulic unit 70, a first main link member 7a equipped with ...  
WO/2019/064610A1
The present invention achieves a technology capable of automatically changing the speed at which an outboard motor is raised and lowered. An outboard motor hoist device (1) comprises: a pump (42); a first oil passage that connects the se...  
WO/2019/064715A1
Provided is a hydraulic system that can improve the acceleration of a swing motor (41) and control against increases in the flow rate of a hydraulic fluid supplied to the swing motor (41). The hydraulic system comprises a swing speed sen...  
WO/2019/067291A1
A control loop for a double-acting pneumatic actuator is configured to generate two control signals, one for each of the two pneumatic chambers for the purpose of controlling the actuator position in view of operating constraints on the ...  
WO/2019/064688A1
When simultaneously driving a turning motor and a boom cylinder, this hydraulic drive device enables optimally adjusting hydraulic pump torque distribution and enables feeding the torque actually consumed in a turning motor-driving hydra...  
WO/2019/065925A1
The present invention provides a technique for efficiently using energy when simultaneously performing a revolving operation and a boom raising operation. In a specific state in which hydraulic oil is supplied from a first hydraulic pump...  
WO/2019/065428A1
Provided is a swing-back prevention device capable of preventing a stopped hydraulic actuator from moving due to an undesired load. The swing-back prevention device is provided with: a housing; a piston; and a pair of biasing members, wh...  
WO/2019/064611A1
There is implemented an outboard motor raising/lowering device with which the speed of raising and lowering can be automatically changed in accordance with the state of the outboard motor. An outboard motor raising/lowering device (1) co...  
WO/2019/065510A1
This hydraulic system comprises: a single-rod hydraulic cylinder; a variable-capacity pump driven by a rotating electrical machine; a rod-side supply line and head-side supply line that connect the pump with the hydraulic cylinder; a fir...  
WO/2019/065509A1
This hydraulic system for a closed circuit is provided with: a pump driven by a rotary machine; a rod-side supply line for connecting a first port of the pump to the rod-side chamber of a hydraulic cylinder; a head-side supply line for c...  
WO/2019/060136A1
A closed-loop hydraulic circuit (164) associated with a swing mechanism (105) of a machine is controlled to obtain both a pressure control during acceleration and deceleration of the swing mechanism (105) and a velocity control during co...  
WO/2019/058711A1
A hydraulic motor control device (100) comprises a volume switching valve (30) that controls the flow of working oil supplied to and discharged from a pair of switching actuators (20, 21) that change the volume of a piston motor (1) by d...  
WO/2019/058814A1
A control valve (IB) is provided with: a valve body (151) having supply passages (161a, b), load pressure passages (162a, b), and a discharge passage (163); and a spool (153). The load pressure passage (162a) has connected thereto a pres...  
WO/2019/060285A1
An adapter converts a fastener driving tool into an automatic (multiple shots per second) pneumatic fastener driving tool. The adapter is mounted to the top of the frame body of a pneumatic fastener driving tool, in which the adapter has...  
WO/2019/059431A1
A time-based power boost control system. A fluid source supplies fluid. A relief device relieves pressure of the fluid supplied by the fluid source when the pressure of the fluid exceeds a relief pressure level. A control device controls...  
WO/2019/057924A1
The invention concerns a system for driving a moving element, comprising: - a first and a second supply line (10, 20), configured to receive a high pressure (HP) and a low pressure (LP) for supplying hydraulic motors, - a drive device co...  
WO/2019/056043A1
The present disclosure relates to a check valve for a hydraulic cylinder performing a safety critical function, such as, but not limited to a hoist check valve. In one aspect, the valve assembly comprises a body, the body housing both a ...  
WO/2019/054907A1
The invention relates to a device that generates clean, renewable energy by adding to the process of generating hydroelectric energy by means of pumping and conventional storage or by using dams to produce energy, the dams storing the en...  
WO/2019/053936A1
Provided is a work machine which, within the limit of not harming dynamic stability, can perform work using the impact generated when a cylinder driving a work front collides with a stroke-end. According to the present invention, a drive...  
WO/2019/053933A1
The present invention provides a working machine which can selectively establish a closed circuit connection between a plurality of double tilting-type hydraulic pumps and a single rod-type hydraulic cylinder, the working machine being c...  
WO/2019/053783A1
A lock valve 50 comprising a poppet valve body 52 which is disposed within a spring chamber 61, a spring 53 which biases the poppet valve body 52 leftward, and a valve seat 51 which comes into contact with the poppet valve body 52 is dis...  
WO/2019/054234A1
Provided is construction machinery with which it is possible to suppress the unintended operation of a hydraulic actuator even when a double discharge pump breaks down in a hydraulic closed circuit system. A hydraulic closed circuit syst...  
WO/2019/048455A1
The invention relates to a valve, in particular for use as a pressure balance (38) in lifting devices (2) that can be actuated hydraulically, comprising a valve housing (54) which has a control connection (40) and a fluid inlet (64) and ...  
WO/2019/049327A1
According to the present invention, a first torque control proportional electromagnetic valve (37) is connected to a third pressure-receiving chamber (32D) of a first torque control regulator (32) via a first torque control pipeline (41)...  

Matches 1 - 50 out of 33,571