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Patent Searching and Data


Matches 101 - 150 out of 3,133

Document Document Title
WO/2016/037689A1
Disclosed is a device for relieving pressure in hydraulic lines, in particular in connecting lines that have coupling points (6, 8) and are located between attachments comprising hydraulically actuated actuators and working implements su...  
WO/2016/034582A1
The invention relates to a hydraulic device for driving an actuator to be hydraulically controlled or actuated, comprising a motor arranged in a motor housing, a compensating tank (31) for accommodating hydraulic fluid, and a hydraulic p...  
WO/2016/028646A1
A fluid pressure regulator has a high pressure side and a low pressure side separated by a plunger. The plunger is biased against fluid pressure on the low pressure side. The fluid pressure on the low pressure side in opposition to the b...  
WO/2016/024501A1
This fluid control device (10) is provided with a container (13), a pump (11), a solenoid valve (12) and a capacitor. The pump (11) is driven by a primary power source and can pressurize or depressurize the container (13). The suction po...  
WO/2015/143524A3
The present invention relates to a subsea hydraulic actuator with spring return, wherein the spring is directly exposed to sea water, is made of an inert material that is corrosion-resistant and has a special structure. The spring is mou...  
WO/2015/185252A1
The invention relates to a hydraulic drive (10) having at least one hydraulic machine (11, 12) in a hydraulic system (25) which has a low-pressure side (13) and a high-pressure side (16). In order to improve the protection of components ...  
WO/2015/185607A1
The invention relates to a hydraulic control device for a quick-acting valve of a steam turbine, comprising a module for reducing a hydraulic pressure by quickly opening an outlet valve and/or by unloading or loading an actuator for actu...  
WO/2015/174814A1
The invention relates to a safety valve for preventing the piston of hydraulic cylinders from falling, by retraction, as a result of pressure drops in the hopper lifting system of a compactor truck. The safety valve comprises: a valve bo...  
WO/2015/165561A1
The invention relates to a compressed-air system (1) having a safety function and to a method for operating such a compressed-air system (1). The compressed-air system (1) contains two working valves (2, 3), which each can selectively as...  
WO/2015/162229A1
The invention relates to a control system for a hydraulic work machine (10), comprising a plurality of hydraulic work circuits (12) for supplying actuators and/or drive units of movable machine parts with hydraulic fluid, and an emergenc...  
WO/2015/153692A1
An illustrative embodiment of a safety block may include an actuator bracket pivotally engaged with a pivot arm. The actuator bracket may be configured to engage a master actuator having a first end moveable with respect to a second end....  
WO/2015/151895A1
This invention, which improves responsiveness leading up to the actuation of a brake that applies braking to a motor, includes a motor, a brake that applies braking to said motor by reducing oil pressure and releases said breaking by inc...  
WO/2015/139910A1
The invention relates to a hydraulic drive comprising at least one hydraulic machine (11, 12) in a hydraulic system (25), which has a high pressure side (16) and a low pressure side (13). In order to simplify the operation of a hydraulic...  
WO/2015/068141A3
A fluid transmission fitting (100) is described comprising a female coupler (47) inserted within a hydraulic feeding block (1), and a male coupler (48), which can be coupled to said female coupler (47), said block (1) including at least ...  
WO/2015/107662A1
This work machine is provided with: a pneumatic pump (5A); a pneumatic drive device; a pneumatic control valve (50); a communicatively connected first control device (81) and second control device (82); a work tool (60); a first operatio...  
WO/2015/064044A1
This hydraulic drive unit (1) drives actuators (7, 9, 10) by supplying said actuators (7, 9, 10) with a hydraulic oil discharged from a hydraulic pump (11). The hydraulic drive device (1) is provided with operation valves (13, 14), a flo...  
WO/2015/053094A1
A control system (100) for a hybrid construction machine, said control system being equipped with: a first and a second main pump (MP1, MP2) that supply operating oil; a boom cylinder (BC), which extends and thereby raises a boom when op...  
WO/2015/045891A1
A control system of a hybrid construction machine is provided with a regeneration motor that rotates through a working fluid introduced from a turning circuit, a pressure detector that detects turning pressure of the turning motor or bra...  
WO/2014/028795A3
A pressure relief valve system (150) for use in a downhole operation may include a pressure relief valve (152) configured to relieve pressure from high pressure tubing (116) extending between a pump and a wellhead, and may include a sens...  
WO/2015/012340A1
The present invention improves energy regeneration efficiency by allowing the actuator oil paths and the regenerative hydraulic motor to communicate with little pressure loss during regeneration without affecting the operation of the hyd...  
WO/2015/007318A1
There is presented an on-off pilot stage valve arrangement (20) for controlling at least one main stage valve (9a, 9b, 9c, 9d). The on-off pilot stage valve arrangement comprises a first pilot valve (18) discretely operable between two s...  
WO/2015/004003A1
A safety valve (100) with a pressure supply port (122), an actuator port (124), and a tank port (126) is provided. The safety valve (100) comprises a valve assembly (110) fluidly coupled to the pressure supply port (122), the actuator po...  
WO/2014/200355A1
An actuator assembly (100), the actuator assembly (100) including : - a first actuator (5), the first actuator (5) comprising an actuator housing (51), a piston (53) in the actuator housing (51) and an actuator rod (53); and - a hydrauli...  
WO/2014/174262A1
A failsafe mechanism for a tool is described, such as a lifting or separating wedge, and optionally having a piston. An actuator rod (10) activates and deactivates the tool in response to a control mechanism, and has a deformation region...  
WO/2014/172375A1
A method of deactivating an underwater hydraulic device provides a hydraulic device that is capable of being operated under water, the device having a hydraulic cylinder with a pushrod and a piston. The device is lowered below a water su...  
WO/2014/165888A1
The invention relates to an electrohydraulic control circuit for controlling a hydraulically actuated control element (5.6), by means of which a segment (5.3) of a manipulator, in particular of a large manipulator for self-propelled conc...  
WO/2014/155767A1
A hydraulic device (100) is configured so as to prevent the breakage of a single-directional filter section adapted for high-pressure oil. The hydraulic device (100) is provided with an accumulator (106) which supplies oil from an oil ta...  
WO/2014/141961A1
An actuator controller detects the displacement of a piston (7) in a first actuator (5), controls the first actuator (5) through feedback control, measures individual forces generated in the first and second actuators (5, 4), corrects th...  
WO/2014/137250A1
The present disclosure relates to a pilot pressure control system (28) for controlling a pilot signal pressure at a pilot inlet (24; 26) of a control valve (22). The pilot pressure control assembly (28) comprises a pilot outlet (36) adap...  
WO/2014/129676A1
Disclosed is a hydraulic system for a construction machine, provided with a protection device, wherein a flow rate discharged from a hydraulic pump is controlled according to oil temperature and a driver can be informed of the informatio...  
WO/2014/105695A1
Methods for initiating and implementing fail operational modes in an electro-hydraulic system are disclosed. In one step, a plurality of valve assemblies is provided wherein each of the valve assemblies has a pressure sensor and a positi...  
WO/2014/104603A1
The present invention relates to a hydraulic circuit system for forced regeneration of a diesel particulate filter, and more particularly, to a hydraulic circuit system for forced regeneration of a diesel particulate filter, which preven...  
WO/2014/091685A1
Provided is a hydraulic circuit that makes it possible to switch the circuit state between a state in which a regenerative action operates and a state in which the regenerative action stops. The hydraulic circuit comprises: hydraulic pum...  
WO/2014/061834A1
Disclosed is an automatic pressure control device for a construction machine for constantly maintaining an initially set pressure of a main relief valve which sets a maximum pressure of a hydraulic system. According to the present invent...  
WO/2014/055731A1
A method for detecting and isolation a leak in a hydraulic system having a supply pump serving at least one control valve is disclosed. In one embodiment, the control valve has multiple work sections. In step of the method, the hydraulic...  
WO/2014/032086A1
A fluid isolator (10) comprising a primary outlet port (30) adapted to be coupled to a hydraulic device; a first line (26) in fluid communication with the primary outlet port (30) and the bleed valve (14); a first one way valve ( 40) inh...  
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/2012/168734A3
A security arrangement of a fluid operated machine comprises a fluid inlet for channelling fluid into a chamber; said chamber having two outlets; a first outlet being provided to channel fluid to an operative component of said fluid oper...  
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/2013/183461A1
The present invention is provided with operation devices (4a, 4b), a control valve (5a) for controlling a hydraulic cylinder (3a) on the basis of the operation signal from operation device (4a), an inverter device (13) for controlling an...  
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/2013/168723A1
In a solenoid valve system (10, 10a, 100, 200, 300, 300a), a plurality of first through third solenoid valve units (14a to 14d, 16a to 16d, 18a to 18d) are divided into a plurality of first through third groups (14, 16, 18). In this case...  
WO/2013/152817A1
The invention relates to an air treatment system for the supply of compressed air in utility motor vehicles, having a plurality of compressed-air circuits connected to a main supply line (102), wherein a trailer and/or parking brake supp...  
WO/2013/152107A1
Two-stage, sequential operation protective assemblies are provided, including a primary protective device (20) having an element (32) which shifts in response to operation thereof (preferably a rupturable burst member (35)), together wit...  
WO/2013/140960A1
A mixer drum drive device comprises an auxiliary fluid pressure pump provided independent of a fluid pressure pump and capable of supplying hydraulic fluid to a fluid pressure motor so as to rotate a mixer drum in a stirring manner, a pl...  
WO/2013/129946A1
The invention relates to an extension device, lifting device or jack that can be locked in a raised configuration and used to safely support a raised load. An extension device according to the invention comprises a housing having a close...  
WO/2013/106839A3
A method of deactiving an underwater hydraulic device provides a hydraulic device that is capable of being operated under water, the device having a hydraulic cylinder with a pushrod and a piston. The device is lowered below a water surf...  
WO/2013/120118A1
The invention relates to a hydraulically telescopic support device (100) for a vehicle (200), in particular for a mobile loading crane (201), comprising a hydraulically movable piston-cylinder unit (101) for extending and retracting the ...  
WO/2013/122331A1
The real-time power saving device for hydraulic systems according to the present invention operates at a preset working pressure according to the volume of a supplied working fluid. The present invention includes: a proportional valve un...  
WO/2013/098800A4
A valve positioner system (12) with zero bleed at steady state is disclosed. The system has a pilot valve (30), the operation of which is controlled by an electronic circuit (34) powered from a signaling and power connection of a positio...  

Matches 101 - 150 out of 3,133