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Patent Searching and Data


Matches 751 - 800 out of 8,646

Document Document Title
WO/2011/078586A3
Disclosed are a system for driving a boom of a hybrid excavator, and a method for controlling same. The disclosed system comprises: an electric motor (110) operating by means of a motor or generator; a capacitor (115) for storing electri...  
WO/2011/145755A1
The present invention relates to a hydraulic control valve which may variably control the flow of a working fluid supplied to a hydraulic cylinder to operate equipment such as a boom and an arm. One embodiment of the hydraulic control va...  
WO/2011/145753A1
The present invention relates to a pressure control valve which returns a high pressure flow to a hydraulic tank to protect a hydraulic system when the pressure of a working fluid in a hydraulic pump exceeds a set pressure level. The pre...  
WO/2011/146145A1
In one embodiment, a microfluidic system includes a fluidic channel coupled at each end to a reservoir. A fluid actuator is located asymmetrically within the channel to create a long side and a short side of the channel and to generate a...  
WO/2011/078587A3
The present invention relates to an apparatus for controlling a swing brake for construction machinery, comprising: a lower travel body; an upper swinging body supported at the lower travel body such that the upper swing body is capable ...  
WO/2011/141094A1
The invention discloses a valve arrangement having at least two valves (217, 219) and having a housing which is designed as an installation cartridge (201). The valve arrangement may have for example two valves, one of which is a pressur...  
WO/2011/143004A2
An electronic coolant valve mechanism with an integral actuator mechanism. The coolant valve mechanism utilizes an electric motor and a planetary roller mechanism integrated into a valve body to translate and operate a valve member in a ...  
WO/2011/078580A3
According to the present invention, a hydraulic control apparatus for construction machinery comprises: hydraulic pumps (11, 12); first and second control valve units which control the flow directions of working oil discharged from the h...  
WO/2011/141086A2
The invention relates to a hydraulic valve for exposing the supply pressure line of a hydraulic load supplied by a normal pressure source to a substitute pressure source. The invention should further develop the hydraulic valve so that t...  
WO/2011/138235A1
A valve sub-base (100) is provided. The valve sub-base (100) includes a coupling system (200). The valve sub-base (100) includes a female coupling member (106a) formed on a first side (151) of the valve sub-base (100). The valve sub-base...  
WO/2011/078588A3
Disclosed is a pump control system for construction machinery. The construction machinery includes a plurality of actuators driven by hydraulic pressure, for example an excavator, wherein a portion of the actuators belong to a one-to-one...  
WO/2011/068982A3
A hydraulic reservoir includes a container having an internal volume, an internal wall dividing the internal volume of the container into a first section and a second section for separately containing the hydraulic fluid, and two one-way...  
WO/2011/124394A1
A flow control valve, in particular in the form of an electromagnetic proportional directional flow control valve (1), having a valve housing (2), in which a control piston (3) is guided such that it can be displaced axially, which contr...  
WO/2011/124395A1
A flow control valve, in particular in the form of an electromagnetic proportional 2-way flow control valve (1), having a valve housing (2), in which a control piston (3) is guided such that it can be displaced axially, which control pis...  
WO/2011/116677A1
A control loop for multi support legs of a crane is disclosed. The crane includes a first to fourth legs at the side portion and a fifth leg at the front portion. The control loop includes a three-position six-way valve (4) and a first t...  
WO/2011/116877A1
The invention relates to a device for locking an axially movable component (2) of a hydraulic system, wherein the axially movable component (2) can be detachably fixed in a positively locking manner in at least one axial position by mean...  
WO/2011/115647A1
An assembly of valve sections 10 includes an inlet section 12, an outlet section 14, a working section 16, and a working section 18. The working section 16 is a conventional pressure compensated working section. The working section 18 in...  
WO/2011/078586A9
Disclosed are a system for driving a boom of a hybrid excavator, and a method for controlling same. The disclosed system comprises: an electric motor (110) operating by means of a motor or generator; a capacitor (115) for storing electri...  
WO/2011/107235A2
The invention relates to a multi-way valve, which comprises a valve spool (16) disposed in a control chamber (5). On at least one end region, the valve spool (16) has a bearing section (27, 28) which can cover a feed opening (13a, 13b). ...  
WO/2011/106004A1
A method of maintaining a substantially fixed orientation of a pressure control device relative to a movable rig can include rotating a body of the pressure control device while the rig rotates. A method of remotely controlling an orient...  
WO/2011/105037A1
An operation device configured so that, even if the operating speed of an operation section is any speed including zero, the operation device can effectively generate a resisting force against the operation of the operation section to pr...  
WO/2011/047375A3
A spool for a servo valve. The spool includes a first end land and a second end land. The spool includes an intermediate land having a first side and a second side opposite the first side. The intermediate land is positioned between the ...  
WO/2011/096001A1
Hydraulic section (1) comprising: a main spool (2); pressure compensation means (16) able to maintain a substantially constant pressure drop through a metering orifice (3) of said main spool (2); a first chamber (7) interposed between sa...  
WO/2011/091837A1
The invention relates to a hydraulic pilot control unit, which has at least one pressure control valve that can be controlled by means of an actuating device, the pressure control valve in turn having a control piston connected to a stem...  
WO/2011/094269A2
An articulating device for aiding a user, such as, a surgeon or other medical practitioner, in manipulating a hand-actuated articulating device by providing a powered force used for moving the device, thus reducing or eliminating the nee...  
WO/2011/037612A3
A hydraulic manifold has features adapted to the needs of hybrid vehicle applications. In one embodiment, multifunction valves selectively regulate fluid flow among primary and auxiliary flow paths. A normally closed butterfly valve is b...  
WO/2011/091273A2
A spool valve for controlling fluid communication among hydraulic cylinders operating control and slave portions of a surgical device. The spool valve may be used to disconnect the control and the slave portions from one another such tha...  
WO/2011/089503A1
A valve assembly includes a valve housing (80) defining a service passage (94), a first bore (98) in fluid communication with the service passage, a first passage (120), a second bore (100) in communication with the service passage and a...  
WO/2011/088974A1
The invention relates to a valve device comprising a valve housing (2) and a valve piston (4) arranged in an axially displaceable manner in a piston bore (3) of the valve housing (2), via which valve piston a first load connection (A) an...  
WO/2011/034760A3
A tensioner system for an engine including at least one driven sprocket, at least one driving sprocket, a chain, and a tensioner for tensioning the chain. The damping of the tensioner is actively controlled by a valve that allows fluid t...  
WO/2011/041410A3
Hydraulic systems (40) and methods for using such systems in a variety of machinery (100), including but not limited to machines having multiple functions performed by one or more hydraulic circuits. The systems (40) enable valves (50,52...  
WO/2011/031851A3
A hydraulic system includes a plurality of pumps that provide pressurized fluid to a plurality of hydraulic actuators some of which work more that others. That system is controlled by producing a usage value for each of the plurality of ...  
WO/2011/082741A1
The invention relates to a circuit assembly for actuating a double-acting load, comprising two distribution valves for controlling the pressure on each side of the load and two control pressure connections for applying a pilot control pr...  
WO/2011/079891A1
The invention relates to a control valve assembly comprising a valve body which is prestressed in a direction by a control spring assembly. The spring preload of the control spring assembly (12, 62) can be adjusted by an adjusting device...  
WO/2011/079916A1
A multiple - stage valve system (200) including a pilot fluid supply (209) and a process fluid supply (222) is provided. The multiple - stage valve system includes a first pilot valve (201) including a first port (206) in fluid communica...  
WO/2011/081569A1
The present invention relates to power industry and can be used in electrohydraulic steam turbine control systems using microprocessor technology. A method of adjusting the position of riding cutoff valve that controls the displacement o...  
WO/2011/078580A2
According to the present invention, a hydraulic control apparatus for construction machinery comprises: hydraulic pumps (11, 12); first and second control valve units which control the flow directions of working oil discharged from the h...  
WO/2011/078588A2
Disclosed is a pump control system for construction machinery. The construction machinery includes a plurality of actuators driven by hydraulic pressure, for example an excavator, wherein a portion of the actuators belong to a one-to-one...  
WO/2011/078587A2
The present invention relates to an apparatus for controlling a swing brake for construction machinery, comprising: a lower travel body; an upper swinging body supported at the lower travel body such that the upper swing body is capable ...  
WO/2011/022267A3
A microvalve device is disclosed for controlling fluid flow in a fluid circuit. The microvalve device comprises a body having a bore formed therein. A pilot- operated main valve spool supported by the body is movably disposed in the bore...  
WO/2011/056302A3
An electro-hydraulic control system for pump (22) control is disclosed. The hydraulic actuator (50) is configured to control the inclination of a swashplate. The position of the hydraulic actuator (50) is controlled by controlling the fl...  
WO/2011/078586A2
Disclosed are a system for driving a boom of a hybrid excavator, and a method for controlling same. The disclosed system comprises: an electric motor (110) operating by means of a motor or generator; a capacitor (115) for storing electri...  
WO/2011/072503A1
An integrated electro-hydraulic servo actuator comprises a hydraulic locking valve group with a position for locking a hydraulic cylinder, wherein two inlets of the hydraulic locking valve group are connected to two oil ports of a bidire...  
WO/2011/072502A1
An integrated electro-hydraulic actuator comprises a hydraulic locking valve group with a position for locking a hydraulic cylinder, wherein two inlets of the hydraulic locking valve group are connected to two oil ports of a bidirectiona...  
WO/2011/072772A1
A load detection circuit is disclosed, having a load detection valve (8) that is impinged upon at both control sides (20, 22) thereof with the pressure in the chambers of a cylinder (1) as the energy-consuming device. According to whethe...  
WO/2011/072898A1
According to the invention, a control device is provided. The device has a housing component (11) comprising an internal thread section (12), which component can be inserted in a hydraulic block, and a nozzle component (21) comprising an...  
WO/2011/071578A1
A pump (10) for a hydraulic system is disclosed. The pump may have a tiltable swashplate (28), at least one actuator (34) movable to tilt the swashplate, a supply of pressurized fluid (42), and a drain (52). The pump may also have a firs...  
WO/2006/118938A3
An apparatus for angularly positioning a shaker bed, including a discharge end, includes an air source providing pressurized air, an hydraulic tank in selective communication with the air source and containing a quantity of fluid, at lea...  
WO/2011/070558A2
A valve (30) has a tubular valve member (40) movable, for example by a solenoid (38) and spring (46), so that a first end (42) of the valve member moves between a closed position in which it engages a valve seat (64) and is blocked and a...  
WO/2011/068982A2
A hydraulic reservoir includes a container having an internal volume, an internal wall dividing the internal volume of the container into a first section and a second section for separately containing the hydraulic fluid, and two one-way...  

Matches 751 - 800 out of 8,646