Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 251 - 300 out of 3,127

Document Document Title
WO/2006/011627A1
A fluid sequence apparatus having an actuator (2) operated by operation fluid, an actuator control mechanism (3) for controlling the movement of the actuator (2) by a pilot pressure of the operation fluid, and an operation preparation co...  
WO/2006/006950A1
Two or more flow control valves (140a, 140b) may be used to provide redundant flow control for a hydraulic actuator (111) or servoactuator. The flow control valves include a sleeve (142a, 142b) control spool (146a, 146b). Under normal op...  
WO/2005/113407A1
The invention relates to a lifter, in particular a lifter for baggage. The lifter is provided with a safety stop that includes a pivotable stop element that pivots to a locking position when acceleration exceeds a limit value.  
WO/2005/113999A2
A hydraulic drive system for an access apparatus and a method of access is presented. The hydraulic drive system may include a hydraulic power unit, a hydraulic cylinder and a subsystem for limiting motion of the access system according ...  
WO/2005/097405A1
[PROBLEMS] A safety device for a machine tool, which alone functions as both as means for balancing the weight of a rising/lowering member and as cushioning means for preventing falling and sudden rise of the rising/lowering member. [MEA...  
WO/2005/090797A1
A valve means controls flow from a fluid supply (2) to a pressurised seal chamber (3) at the pump outlet of a fluid storage tank (6), in order to accommodate leaks from the seal chamber (3). The valve means comprises metering valve (8) a...  
WO/2005/078318A1
The invention concerns a shifting unit (1) for a motor vehicle gearbox, said switching unit comprising valves, which are connected between them by a pressure supply conduit (58) and by a pressure discharge conduit (60), associated with a...  
WO/2005/077731A1
The invention concerns a vehicle steering system for motor vehicles, comprising a steering implement, which can be operated by the driver, and comprising an actuating unit, which is assigned to the steered vehicle wheels, is actively con...  
WO/2005/069853A2
The redundant valve system 10 of the preferred embodiment includes a first valve unit 12 and a second valve unit 14. The redundant valve system 10 is preferably used to connect a source 16 to a destination 18 and to connect the destinati...  
WO/2005/054629A1
The invention relates to a hydraulic circuit used for longwall face removal, comprising a plurality of supports (shields). In said circuit, the hydraulically actuated power transmitters (cylinder/plunger units (4)) and their associated h...  
WO2004051121A3
A circuit (10) for operating a bi-directional air motor (12) of a valve closure system for enabling a tank valve to be discretionally operated to either open or closed condition either at the tank by attending personnel or from a remote ...  
WO/2005/008077A1
A hydraulic control apparatus includes two oil flow control valves (30, 32) each provided with a supply control portion (36, 38, 52, 54) for controlling an oil supply from a pressurized oil source, and a discharge control portion (40, 42...  
WO/2005/005213A1
$g(D)The invention relates to a method for precluding danger of injuring (danger of clamping) a person carrying out maintenance works of a brake system provided with a high-pressure accumulator in a stop position without pedal actuation ...  
WO/2004/109019A1
The invention relates to a hydraulic control arrangement, for control of a user (6, 8), with at least one mechanically-operated continuously-adjustable distribution valve (16), with a subsequent LUDV pressure compensator (24) down line. ...  
WO/2004/104379A1
The invention relates to a bearing for axially mounting a rotor (8) of a gas turbine. Said bearing comprises a bearing body (2) that is disposed stationary relative to the position of the rotor (8), a hydraulic piston arrangement (3, 4) ...  
WO/2004/104427A1
A hydraulic system for a work machine, such as a tractor-mounted front loader, comprises a flow control valve (17) having a valve housing (18) with an internal passageway system (S) for conveying hydraulic fluid through the valve, line p...  
WO/2004/051121A2
A circuit (10) for operating a bi-directional air motor (12) of a valve closure system for enabling a tank valve to be discretionally operated to either open or closed condition either at the tank by attending personnel or from a remote ...  
WO/2004/044437A1
A device for a single-acting hydraulic cylinder (1) designed to lift or pull a load upon the existence of an oil pressure on the rod-side of a cylinder piston (7), where the cylinder bottom (15) of the hydraulic cylinder (1) is provided ...  
WO/2004/026601A1
Disclosed is a drive unit for coaxial rotational movement of two halves (1), (2) of a motor vehicle stabilizer provided with a tubular housing consisting of two housing halves (3), (4), inside which a hydraulically displaceable actuating...  
WO2003008811A8
The invention relates to the architecture of a hydraulic circuit which is associated with actuators (100) such as aircraft brakes. The invention comprises a main hydraulic circuit (C) which is provided with hydraulic components (4,5,101,...  
WO/2004/025127A1
The invention relates to a hydraulic device comprising a first hydraulic cylinder (2) provided with a first piston (11) and a second hydraulic cylinder (3) provided with a second piston (12). The pistons are coupled together in order to ...  
WO2003029659A3
The invention relates to a main piston servo control system which is fitted with a fault control system. The inventive system comprises two servo-valves (1, 2) and a piston (4) which is mechanically connected to a position transducer (5)...  
WO/2004/016954A1
A modular, reversible actuator (10) contains an integrated manifold, eliminating the need for external tubing and increasing the area of the diaphragm (24), thus providing a greater actuating force. The actuator comprises a housing (12) ...  
WO2002061288A3
The invention relates to a hydraulic actuating system comprising a pump (2) which is connected to the working chambers of at least two double-acting piston-cylinder arrangements (1; 14, 15) by means of hydraulic lines (3, 4), one of said...  
WO/2004/013496A1
The invention relates to a hydraulic cylinder comprising a piston rod (70) bearing at least one tool receiving element (120). Said hydraulic cylinder is characterised by an automatic disconnection device which is controlled in a hydrauli...  
WO/2003/100265A1
A working piston (32) is slidably fitted in a cylinder main body (31), with a rod (34) integrally formed on one surface of the working piston (32). The rod (34) projects to the outside through one end of the cylinder main body (31) and r...  
WO/2003/099637A1
The invention relates to a system for controlling at least one hydraulic cylinder (2, 3) comprising a first control valve unit (4), which is connected to said hydraulic cylinder for regulation of the latter, and a first operable control ...  
WO/2003/098052A1
An integrated three function valve (ITFV) that combines the functions of a bypass valve (e.g. 183a, 185a, 161a) into a single assembly is disclosed. The ITFV allows continued operation after any two failures. With the integrated three fu...  
WO2003008811A3
The invention relates to the architecture of a hydraulic circuit which is associated with actuators (100) such as aircraft brakes. The invention comprises a main hydraulic circuit (C) which is provided with hydraulic components (4,5,101,...  
WO/2003/048614A1
The invention relates to a method for controlling a pressure supply device in a hydraulic circuit, especially in a hydraulic circuit in an automatic gearbox which comprises an hydraulic pump, a pressure control valve and a consumer. The ...  
WO/2003/029659A2
The invention relates to a main piston servo control system which is fitted with a fault control system. The inventive system comprises two servo-valves (1, 2) and a piston (4) which is mechanically connected to a position transducer (5)...  
WO/2003/027505A1
A hydraulic circuit of a working machine capable of preventing all actuators from being functionally stopped when a pilot hydraulic pressure supply source fails to assure the least safety, wherein an unloading oil passage selector valve ...  
WO/2003/027507A1
The invention relates to an energy cylinder (1) for actuating a valve of a turbine, especially a steam turbine. A cylinder housing and a control block are combined to form a common block (58). Said common block comprises two lateral surf...  
WO/2003/025402A1
Method for restricting leakage of hydraulic oil in a rock drilling rig (I). The oil level in the tank (3) is read and stored in a memory each time one switches between drilling and positioning of different components on the drill rig (I)...  
WO/2003/016766A1
A control valve (36, 37, 39, 40) for controlling the flow of fluid to a fluid-operated actuator, in an open condition in use, allows the flow of fluid from a fluid source to the actuator and, in a closed condition, prevents the flow of f...  
WO/2003/011675A1
Back up hydraulic system for providing hydraulic fluid to a steer-by-wire system. The steer-by-wire system comprises a hydraulic steering actuator (21), a hydraulic pump (31) driven by an engine (29), and an electronically controlled val...  
WO/2003/010387A1
The invention relates to a lifting system, especially a ferry wharf having a platform which can be brought into a pre-determined lifting position by means of a hydraulic cylinder or a cable winch. A stop device is associated with the dri...  
WO/2003/008811A2
The invention relates to the architecture of a hydraulic circuit which is associated with actuators (100) such as aircraft brakes. The invention comprises a main hydraulic circuit (C) which is provided with hydraulic components (4,5,101,...  
WO/2003/004194A1
The supply of operating air or oil to a press, shears or like machine is controlled by a pair of spool valves (10,14) connected in a series and each operates a pair of switches (20,22). The switches connect dc current to the solenoids vi...  
WO/2002/101247A1
An hydraulic control arrangement (66) in association with a pipe relining machine Includes fluid pressure supply and return lines (32, 33), a motor controller (80) to control a motor (67) and a radial position controller. The radial posi...  
WO2002018800A3
A discharge valve (150) is provided to open an electrically controlled pilot valve (100) in emergency situations such as during an electrical or hydraulic failure. The discharge valve has a poppet (154) that operates in response to a pre...  
WO/2002/061288A2
The invention relates to a hydraulic actuating system comprising a pump (2) which is connected to the working chambers of at least two double-acting piston-cylinder arrangements (1; 14, 15) by means of hydraulic lines (3, 4), one of said...  
WO2001065120A3
A hydraulic servo motor which includes a plurality of digitally latched poppet valves (42, 44) that control the spool position of a spool valve (20). The poppet valves are controlled by a controller (56) which perfoms a servo routine tha...  
WO/2002/018800A2
A discharge valve (150) is provided to open an electrically controlled pilot valve (100) in emergency situations such as during an electrical or hydraulic failure. The discharge valve has a poppet (154) that operates in response to a pre...  
WO/2002/008613A1
The invention relates to a device for moving heavy covers (10), in particular, doors for the opening and closing of apertures on a vehicle with armour plating (14). The cover (10) is moved by means of a hydraulic drive unit (18), which m...  
WO/2002/001080A1
The invention concerns a hydraulic circuit (17) and a control valve (18) dimensioned to be capable of providing the greater part the control surface (3) actuating, which requires less power than the system maximum performances. Moreover,...  
WO/2001/092651A1
A hydraulic circuit for construction machinery, comprising a hydraulic pilot-operated control valve for controlling an actuator driving a front attachment and a pilot pipeline leading a hydraulic pilot pressure to the control valve havin...  
WO/2001/083992A1
The neutral override circuit of this invention includes a variable displacement pump (12) controlled by a servo (56) fluidly connected to a displacement control (70) that is biased to a neutral position. A charge pump (58) is connected t...  
WO2001012997A3
The invention relates to a hydraulic valve arrangement for operating a hydraulic consumer (80). Said arrangement is connected to a hydraulic pressure source (40) by means of at least one pressure connection (30), to the hydraulic consume...  
WO/2001/071200A1
A device representing a simple means of multiplying the functionality of wiring in point to point control circuits such that fault tolerant, fault reporting circuits can be constructed with less wire. The circuit can employ the wiring on...  

Matches 251 - 300 out of 3,127