Abstract: A hydraulic valve control unit is for an open center hydraulic system including a pump, a shunt valve and one or more actuator valves coupled to the shunt valve. Each actuator valve controls a corresponding actuator's position. The hydraulic valve control unit has a processor and a memory, containing instructions executable by the processor, and is configured to obtain user input data indicative of a desired actuator's position, determining opening area values of the one or more actuator valves using a predetermined relation dependent on the user input data, determining an opening area value of the shunt valve using the predetermined relation dependent on the user input data, controlling the shunt valve based on the opening area value of the shunt valve, and controlling the one or more actuator valves based on the opening area values of the one or more actuator valves.

Abstract: An open center hydraulic system (100) includes a tank configured to hold hydraulic fluid, a pump configured to provide pressurized hydraulic fluid from the tank, and a shunt valve configured to adapt a first opening area between a first input port and a first output port of the shunt valve dependent on a first control signal. The first input port is coupled to the pump, and the first output port is coupled to the tank. A first actuator valve is coupled to the first input port and configured to adapt a second opening area of the first actuator valve dependent on a second control signal. A hydraulic valve control unit is configured to determine a first opening area value and a second opening area value based on user input data and a predetermined relation dependent on the user input data, sending the first control signal, indicative of the first opening area value and sending the second control signal indicative of the second opening area value.

Abstract: The present invention relates to An open center hydraulic system (100), the open center hydraulic system (100) comprising a tank configured to hold hydraulic fluid, a pump configured to provide pressurized hydraulic fluid from the tank, a shunt valve configured to adapt an first opening area between a first input port and a first output port of the shunt valve dependent on a first control signal, wherein the first input port is coupled to the pump and the first output port is coupled to the tank, a first actuator valve coupled to the first input port and configured to adapt a second opening area of the first actuator valve dependent on a second control signal, a hydraulic valve control unit configured to determine a first opening area value and a second opening area value based on user input data and a predetermined relation dependent on the user input data, sending the first control signal, indicative of the first opening area value and sending the second control signal indicative of the second opening area

Abstract: The present invention relates to a hydraulic valve control unit for an open center hydraulic system, the open center hydraulic system comprising a pump, a shunt valve and one or more actuator valves coupled to the shunt valve, wherein each actuator valve is controlling a corresponding actuator's position, the hydraulic valve control unit comprising a processor and a memory, said memory containing instructions executable by said processor, wherein said hydraulic valve control unit is configured to obtain user input data indicative of at least a desired actuator's position, determining opening area values of the one or more actuator valves using a predetermined relation dependent on the user input data, determining an opening area value of the shunt valve using the predetermined relation dependent on the user input data, controlling the shunt valve based on the opening area value of the shunt valve, and controlling the one or more actuator valves based on the opening area values of the one or more actuator valv

Abstract: The invention relates to a hydraulic valve device (1) including a high pressure connection (P?) and a low pressure connection (T?); at least one motor port connection (A?) that is connectable to a motor port (A) on a hydraulic motor (M), preferably a hydraulic cylinder; a flow control valve (F), which is arranged between the high pressure connection (P?) and the motor port connection (A?) and which includes a flow opening (18) that is adjustable between a fully closed position and a fully open position; and a pressure regulator (R) that is arranged between the high pressure connection (P?) and the flow regulating valve (F), wherein a regulator pressure (PR) that acts at a first connection point (3) between the pressure regulator (R) and the flow regulating valve (F) acts on the pressure regulator (R) via a first control conduit (4) to close the same.

Abstract: A method and a device for controlling a load sensing hydraulic system, having a bypass valve (F), which is controlled by a pump pressure (P) and which when the hydraulic system is in operation diverts a pump flow of hydraulic fluid to a tank (E). The bypass valve (F) is pre-stressed towards a closed position and is put on load by the pump pressure (P) towards an open position against the action of the pre-stress. When the hydraulic system operates in a idling operation a first pre-stress element (I) limits the pre-stress to a first pressure and upon activation of the hydraulic system, a pressure regulator (10) increases the pre-stress to a second, substantially higher pressure by applying a hydraulic, constant second pre-stress force, that is added to the first pre-stress force and is substantially greater than this.

Abstract: The present invention relates to a hydraulic auxiliary valve device (1) adapted to be connected to a hydraulic main valve (20) on a work vehicle, which work vehicle comprises a hydraulic system comprising a pump and a tank, the auxiliary valve device (1) comprises: —a first motor port connection (4A) and a second motor port connection (4B) arranged to be connected to a first motor port and a second motor port, respectively, on a double acting hydraulic motor, in particular a double acting hydraulic cylinder, —a pump lead-through (2), which connects the pump input port connection (2A) of the auxiliary valve device (1) to the pump connection output port (2B); —a tank lead-through (3), which connects the tank input port connection (3A) of the auxiliary valve device (1) to the tank connection output port (3B); and —a control valve (IA) provided with two open positions, which control valve (1A) in the first open position connects the pump input port connection (2A) to the first motor port connection (4A) and the t

Abstract: A valve fastening element (1) for attaching a hydraulic valve (2) to a tractor (13). The valve fastening element (1) includes a tractor part (1a) adapted to be attached on the tractor and a valve part (1b adapted for direct assembly of the valve (2), wherein the valve (2) includes at least two screw holes (10,11,12), each adapted to receive a screw (3,4,5). The valve part (1b) of the valve fastening element (1) includes at least two slits (6,7,8), of which at least a first slit (6,8) includes an opening (6a,8a) adapted to let the head of the screw pass, and all slits include a groove (6b,7,8b,8c) that is sufficiently narrow to prevent the head of the screw (3,4,5) from passing but sufficiently wide to allow the thread of the screw (3,4,5) to pass.

Abstract: A dry powder inhaler (2) comprises a housing (6, 8) including a mouthpiece (10) and a cover (11, 12) movably mounted to the housing (6, 8). The cover (11, 12) is movable between an open configuration of the inhaler (2) in which the mouthpiece (10) is exposed for use and a closed configuration of the inhaler (2) in which the mouthpiece (10) is enclosed. In the open position, the cover (11, 12) at least partly defines an inlet aperture (71) to an inhalation air flow path leading through the inhaler (2) and communicating with the mouthpiece (10). The inlet aperture (71) is positioned in such a way that makes it difficult for a user to obstruct it when using the inhaler (2). Preferably, in the closed position, the mouthpiece (10) is received into the inlet aperture (71) to protect the mouthpiece (10) when the inhaler (2) is stored.

Abstract: For a hydraulic system of a work vehicle, a fixed connector part fixedly arranged thereon. A fixed connector part has a plurality of hydraulic couplings. A hydraulic work system of a work equipment has hydraulic couplings which are either a movable part having a plurality of hydraulic couplings or a plurality of individual hydraulic connections, each having a hydraulic coupling. The movable connector part is connectable to the fixed connector part by a locking device. The hydraulic couplings of the fixed connector part are constructed to be hydraulically coupled to the hydraulic couplings of the movable connector part and alternatively to the hydraulic couplings of the plurality of individual hydraulic couplings.

Abstract: A holding device to protect a movable connector part of a hydraulic system on work equipment, which mates with a fixed connector part of a hydraulic system on a work vehicle. The holding device is fixedly mounted on the work equipment and has recesses which receive and protect the hydraulic connections of the movable connector part when they are not engaged with the fixed connector part. The holding device may have a contact surface which mates with the hydraulic connectors of the movable part. The recess or recesses can receive a multipart hydraulic connector or a plurality of individual connectors. The holding device may include an electrical connector dummy for attachment to an electrical connector on the work equipment. A cover fits over the holding device when it is not engaged by a movable connector part; and it also mates with the fixed connector part when it is not engaged by the movable connector part.

Abstract: The present invention relates to a hydraulic auxiliary valve device (1) adapted to be connected to a hydraulic main valve (20) on a work vehicle, which work vehicle comprises a hydraulic system comprising a pump and a tank, the auxiliary valve device (1) comprises:—a first motor port connection (4A) and a second motor port connection (4B) arranged to be connected to a first motor port and a second motor port, respectively, on a double acting hydraulic motor, in particular a double acting hydraulic cylinder,—a pump lead-through (2), which connects the pump input port connection (2A) of the auxiliary valve device (1) to the pump connection output port (2B);—a tank lead-through (3), which connects the tank input port connection (3A) of the auxiliary valve device (1) to the tank connection output port (3B); and—a control valve (IA) provided with two open positions, which control valve (1A) in the first open position connects the pump input port connection (2A) to the first motor port connection (4A) and the tank

Abstract: Wire attachment and attachment method for a sheathed wire including a wire and a sheath coaxially surrounding the wire, the wire attachment including: a housing; an axial bore inside the housing including an opening adapted to receive the sheathed wire; a spool slidably arranged inside the bore, the spool receiving the wire and including an engagement member for fixedly engaging the wire, such that any longitudinal movement of the wire will be transmitted to the spool; a sheath attachment member for fixing the sheath to the wire attachment inside the axial bore at a distance from the receiving bore, such that the spool and the wire are free to move axially with respect to the sheath. The sheath attachment member is arranged to exert a substantially radial pressure onto the surface of the sheath, such that it may be attached essentially without disturbing the axial position of the sheath.

Abstract: A method and a device for controlling a load sensing hydraulic system, having a bypass valve (F), which is controlled by a pump pressure (P) and which when the hydraulic system is in operation diverts a pump flow of hydraulic fluid to a tank (E). The bypass valve (F) is pre-stressed towards a closed position and is put on load by the pump pressure (P) towards an open position against the action of the pre-stress. When the hydraulic system operates in a idling operation a first pre-stress element (I) limits the pre-stress to a first pressure and upon activation of the hydraulic system, a pressure regulator (10) increases the pre-stress to a second, substantially higher pressure by applying a hydraulic, constant second pre-stress force, that is added to the first pre-stress force and is substantially greater than this.

Abstract: The invention relates to a hydraulic valve device (1) including a high pressure connection (P?) and a low pressure connection (T?); at least one motor port connection (A?) that is connectable to a motor port (A) on a hydraulic motor (M), preferably a hydraulic cylinder; a flow control valve (F), which is arranged between the high pressure connection (P?) and the motor port connection (A?) and which includes a flow opening (18) that is adjustable between a fully closed position and a fully open position; and a pressure regulator (R) that is arranged between the high pressure connection (P?) and the flow regulating valve (F), wherein a regulator pressure (PR) that acts at a first connection point (3) between the pressure regulator (R) and the flow regulating valve (F) acts on the pressure regulator (R) via a first control conduit (4) to close the same.

Abstract: A valve fastening element (1) for attaching a hydraulic valve (2) to a tractor (13). The valve fastening element (1) includes a tractor part (1a) adapted to be attached on the tractor and a valve part (1b adapted for direct assembly of the valve (2), wherein the valve (2) includes at least two screw holes (10,11,12), each adapted to receive a screw (3,4,5). The valve part (1b) of the valve fastening element (1) includes at least two slits (6,7,8), of which at least a first slit (6,8) includes an opening (6a,8a) adapted to let the head of the screw pass, and all slits include a groove (6b,7,8b,8c) that is sufficiently narrow to prevent the head of the screw (3,4,5) from passing but sufficiently wide to allow the thread of the screw (3,4,5) to pass.

Abstract: Wire attachment (1) for a sheathed wire (20) including a wire (21) and a sheath (22) coaxially surrounding the wire, the wire attachment (1) comprising: a housing (2); an axial bore (10) inside the housing including an opening (10a) adapted to receive the sheathed wire (20); a spool (5) slidably arranged inside the bore (10), the spool being adapted to receive the wire (21) and comprises an engagement member (6) for fixedly engaging the wire (21), such that any longitudinal movement of the wire (21) will be transmitted to the spool (5); a sheath attachment member (3) for fixing the sheath (22) to the wire attachment (1) inside the axial bore (10) at a distance from the receiving bore (10), such that the spool (5) and the wire (21) is free to move axially with respect to the sheath (22).

Abstract: Fixed connector part (10), adapted to constitute an end part of a hydraulic system of a work vehicle (1) and intended to be fixedly arranged on the work vehicle (1), the fixed connector part (10) comprising: at least two hydraulic couplings (14a-d); a first locking means (13, 16), which is intended to interact with a second locking means (23, 26) on a movable connector part (20), which constitutes an end part of a hydraulic system of a work equipment (2), wherein the first and second locking means are inter-connectable such that the hydraulic couplings of the fixed connector part (10) and the movable connector part (20), respectively, may be simultaneously interconnected through the interaction of the first and second locking means. Further each hydraulic coupling (14a-d) of the fixed connector part (10) comprises individual couplings, such that each hydraulic coupling (14a-d) of the fixed connector part (10) may be individually connected to a separate hydraulic coupling (24a-d).

Abstract: Holding means (30) for protecting a movable connector part (20; 24a-d) of a hydraulic system on a work equipment (2), which movable 5 connector part (20; 24a-d) is connectable to a fixed connector part (10) of a hydraulic system of a work vehicle (1), the holding means (30) having a contact surface (32) being adapted to mate with the movable connector part (20; 24a-d) such that its hydraulic connections are protected and unexposed when it is placed in the holding means (30). 10 The holding means (30) is adapted to be fixedly arranged on the work equipment (2), such that said contact surface (32) of the holding means (30) is accessible for protective connection of the movable connector part (20; 24a-d).