A servo valve includes a fluid transfer valve assembly comprising a supply port and a control port; a valve spool arranged to regulate flow of fluid from the supply port to the control port in response to a control signal; and a drive means configured to move the valve spool relative to the fluid transfer assembly in response to the control signal to regulate the fluid flow. The drive means is arranged to rotate the spool relative to the fluid transfer assembly, the spool provided with openings arranged to selectively align with or block flow channels in the fluid transfer assembly according to the direction and degree of rotation of the spool.

A pneumatic solenoid valve includes a fluid connector, a magnet coil which extends along a coil axis, a yoke arranged on the magnet coil, and an armature movable relative to the yoke and which extends along an armature axis and which is formed for opening and closing the fluid connector. The armature can assume three different switching positions. In the first switching position, the armature and coil axes are arranged parallel to one another and the armature completely closes off the fluid connector. In the second switching position, the armature is rotated about an axis of rotation, such that the armature axis and the coil axis assume an angle with respect to one another and the armature partially opens the fluid connector. In the third switching position, the armature is in a state axially displaced in relation to the first switching position, such that the fluid connector is completely open.

A tilting armature for a vehicle solenoid valve, including: a ferromagnetic tilting armature for the vehicle solenoid valve which, by establishment of a magnetic field, is configured to move the tilting armature into one of two positions such that a magnetic flux, associated with the magnetic field, through the tilting armature is in the position conducted through at least one surface of the tilting armature across a gap to form a closed flux loop, wherein the tilting armature is tiltable between the two positions about an axis of rotation that is fixed with respect to the vehicle solenoid valve; in which an enlargement of the at least one surface of the tilting armature by an edge upset of the tilting armature is configured to reduce a magnetic resistance through the gap. Also described are a related vehicle solenoid valve and a related method.

A servo valve assembly includes a first nozzle opposing a second nozzle and a shaft positioned in the gap between the first and second nozzles. The first and second nozzles are spaced apart by a gap and each nozzle has an outlet opening. The shaft defines a diameter (D) and a circumferential surface and is rotatable about an axis of rotation (R-R). The shaft defines first and second reduced radial portions around its circumferential surface, and the first and second reduced radial portions are in fluid communication with the first and second nozzle outlet openings, respectively. The shaft is configured to rotate between a first position where the first nozzle outlet opening is more occluded by the shaft circumferential surface than the second nozzle outlet opening, and a second position where the first nozzle outlet opening is less occluded by the shaft circumferential surface than the second nozzle outlet opening.

A sealing diaphragm for a fluid valve is provided. The fluid valve includes a valve housing and a drive unit, the sealing diaphragm being of hat-like design and being configured for enclosing, on the free-end side, a portion of a valve-closing body which projects into the valve housing of the fluid valve. The sealing diaphragm can include a base portion which is configured to be rotationally asymmetrical on the outer circumferential side, the base portion being provided to abut in a form-fitted manner against an opening of the valve housing, and the base portion of the sealing diaphragm being configured to be received between the valve housing and the drive unit in such a way that the opening of the valve housing is sealed in a fluid-tight manner towards the drive unit.

A fluid valve having a magnetic drive unit for a valve closing body is provided. The drive unit can have a core, a coil partially surrounding the core, and an armature which can be pivoted about a pivot axis by the energization of the coil and the resulting magnetic force, the valve closing body being in operative connection with the armature and being pivotable by the pivoting of the armature about a pivot axis and being positionable at least in a first and a second pivot position, and the valve closing body having a first and a second leg, the first leg extending into a valve housing having at least one fluid channel and the second leg projecting at an angle from the first leg and establishing the operative connection with the armature.

A fluid valve having a drive unit for a valve closing body is provided. The drive unit can have a core, an electric coil partially surrounding the core, and an armature movable by the energization of the coil and the resulting magnetic force, the drive unit having a main body on which a support for the coil, at least one insertion opening for the core and an armature support are provided, and the core inserted into the at least one insertion opening being fixed to the main body by an overmold in such a way that the core assumes a defined position relative to the armature support.

A valve housing for a fluid valve having at least one fluid channel through which a fluid can flow is provided. The valve housing can have a receiving space for a valve closing body movable in the valve housing, the receiving space having an opening, via which the valve closing body is introduced into the receiving space of the valve housing, and at least one first valve seat being formed in the receiving space and projecting into the receiving space in such a way that at least one undercut is formed in the receiving space by the first valve seat, and the valve housing being an integral injection-molded part, the at least one valve seat being produced integrally with the valve housing by an injection molding process.

A fluid valve having a magnetic drive unit for a valve closing body is provided. The drive unit can include a core, a coil partially surrounding the core, and an armature movable by the energization of the coil and the resulting magnetic force, wherein a bearing portion can be provided at the armature, which bearing portion comprises a bearing area, by which the armature is pivotably mounted on a main body of the drive unit.

An external control type fluid coupling includes: a drive disk fixed to a rotary shaft; a housing rotatably supported by the rotary shaft and defining an internal space; a partition plate provided in the housing and partitioning the internal space into operation and storage chambers; a supply hole formed in the partition plate and supplying a fluid from the storage chamber to the operation chamber; a valve body provided in the housing and made of a magnetic material; and an electromagnet generating an attraction force between the electromagnet and the valve body so that the valve body is displaced to a closed state, in which the center of gravity of the valve body, rotatably connected to the housing, is set such that the valve body is rotated to a side on which the supply hole is opened by a centrifugal force acting with the rotation of the housing.