Abstract: A fluid valve assembly including a ball valve within a central hole in a resilient disc-shaped spring. The spring has additional openings to minimize resistance to fluid flow from inlet to outlet. Clearance between the spring and side walls of the cavity within which it is mounted allows the ball to center itself in its seat. The central hole diameter, ball diameter and separation between the spring and seat are selected to create an upward force on the ball over its entire stroke which provides a frictional force between the spring and a supporting lip to minimize radial motion of the spring to keep the ball aligned. The force also overcomes the weight of the ball in applications where the inlet pressure is very low, and also overcomes adhesion of the ball to the seat. The assembly is incorporated in a mass flow controller typically used with semiconductor fabrication processes.

Abstract: The present invention provides a pipe coupling socket having a main body containing a plurality of lock balls for locking a plug accepted in the main body. The main body has a projecting lock portion which projects from the outer circumferential surface and has a top surface in which a groove is formed.

Abstract: A valve comprises a valve housing (2) with a valve inlet (11), a valve outlet (12) and a passage (66) extending through the valve housing (2) from the valve inlet (11) to the valve outlet (12). A valve seat (5) is provided in the passage which comprises a valve sealing surface (50). Further, the valve comprises a blocking element (3) adapted to be moved at least partly into the valve seat (5) for blocking the passage by abutment on the valve sealing surface (50), the blocking element being moved along a direction (102) extending under an acute angle to the plane (90) in which the valve seat (5) is arranged. The valve sealing surface (50) of the valve seat (5) is spherical in shape.

Abstract: A coil assembly for miniature solenoid valves, such as size SAE-6 valves, includes a flux tube which passes through the hollow core of the coil assembly. The flux tube is formed against a shoulder of a coupling member by using the "Tammel" orbital head forming technique in which a forming tube orbits around the end of the flux tube to form a flange which bears against the shoulder. A flux washer is disposed adjacent the coil and is held tightly thereagainst by the flux tube to help linearize magnetic force exerted upon energizing the coil. In order to facilitate stroking and destroking the solenoid valve, the tank ports close slightly before the pressure ports are opened when stroking and slightly after when destroking. The coil is designed to saturate the magnetic circuit early to diminish the effect of coil heating and resultant force loss at a given stroke displacement.

Abstract: A valve for controlling liquids, which for actuation cooperates with a hydraulic step-up piston bore. A pressure chamber provided in the step-up piston bore is sealed off by two pistons and two diaphragms downstream of the two pistons. To compensate for liquid losses in the pressure chamber caused by pressure exerted on the step-up piston bore, control chambers are formed downstream of the pistons and upstream of the diaphragms, and each of the control chambers are connected to a leaking oil bore via a respective throttle bore. The throttle bores have a sharp-edged transition in the relief direction for the control chamber, and a rounded transition in the filling direction for the control chamber, and as a result a minimum pressure for refilling the pressure chamber is always available. The valve is intended for use in fuel injection systems for motor vehicle internal combustion engines.

Abstract: The plug parts and also the associated terminal pins are fashioned in one piece with the circuit board in MID technology, whereby of each of the two main surfaces of the circuit board at least one plug part respectively extends away perpendicularly. In addition, the terminals of each valve coil are fashioned as press-fit contacts, and the associated contact points of the circuit board are fashioned as through-holes that are metallized in MID technology.

Abstract: A valve for regulating the flow of a medium has a valve housing with an inlet for the medium that is to be regulated, and an outlet for a regulated medium flow, a valve face with a valve opening, a movable sealing part that is arranged so that it is influenced by the medium flow in the direction of opening of the valve, and which closes and opens the valve opening as well as regulating the flow of medium through the valve opening. The valve further has an arrangement for controlling the position of the sealing part. In order to obtain a valve of this type in which a gas flow can be regulated with a high degree of precision, and can seal hermetically in a closed position using simple and inexpensive structure, a duct for the flow of the medium is arranged between the inlet and the side of the movable sealing part facing away from the valve face.

Abstract: The fluid pressure device includes a valve housing 2 in which a spool hole 14 is formed, and a spool 18 having a first spool portion 22 inserted in the spool hole 14, and the spool portion 22 is movable with respect to the first hole portion 26 of the spool hole 14 in its axial direction. More fluid grooves 110 are formed in the first spool portion 22. Pressurized fluid acting on one side of the fluid groove 110 have pressure higher than that of pressurized fluid acting on the other sides of the fluid groove 110. A first gap between an outer peripheral surface of the one side of the seal portion and an inner peripheral surface of the first hole 26 between the adjacent fluid groove 110 is set slightly greater than a second gap between an outer peripheral surface of the other side of the seal portion and the inner peripheral surface of the first hole.

Abstract: A solenoid-operated fluid switching valve is described with a movable valve member and a stationary member; the movable member containing at least 2 valve elements that seat in the closed position against valve seating elements, the valve and valve seating elements being made from components that can be precisely matched in thickness and interleaved so that all pairs of elements open and close essentially simultaneously. The solenoid portion can consist of at least 2 armature elements connected by a spacer and at least 2 stator elements connected by a spacer, all of which made from magnetically permeable material, and one or more electrical coils located within the envelope; the armature and stator elements interleaved in a way to create at least 2 substantially equal gaps so the armature is urged in one direction when electrical current is applied to the coils.

Abstract: An electromagnetically operated valve, in particular a fuel injection valve for fuel injection systems, has a core surrounded by a magnet coil and an armature adjacent to the core for operating a valve closing body that interacts with a valve seat body. A reflux body surrounding the armature is magnetically isolated from the core by an isolation point. The core and/or the reflux body is made of a ferritic or ferromagnetic material whose permeability depends on the mechanical stress in the material. The core and/or the reflux body is mechanically deformed in a boundary area between the core and the reflux body to form the magnetic isolation point.

Abstract: A cantilever valve useful for paper handling applications is disclosed. The valve can be batch fabricated in two dimensional valve arrays, with each valve in the array being controlled by passive matrix addressing. Typically, each valve includes a valve housing having an aperture plate defining an aperture therethrough, and an opposing port plate positioned in spaced apart relationship to the aperture plate. A flexible film or strip is attached at its first end between the aperture and port plates and is unattached so that it is free to move between the aperture and port plates at its second end. Valve action is provided by use of a single switching electrode for moving the flexible film between an aperture blocking position and an aperture open position, with the switching electrodes positioned adjacent to the port plate.

Abstract: An apparatus for metering out viscous compositions includes a metering chamber (12) for metering out the viscous composition, a driving mechanism (16), which drives a displacer disposed in the metering chamber, an inlet valve (32), which is connected upstream from the metering chamber (12) and an outlet valve (38), which is connected downstream from the metering chamber (12) and, after the metering chamber (12) is filled, is opened up for discharging the metered-out viscous composition from the metering chamber (12). A threaded rod (14) is disposed longitudinally displaceably as displacer in the metering chamber (12). The threaded rod (14) is rotationally guided coaxially in a hollow shaft (18) of an electric motor (16) and engaged by way of threads with the hollow shaft (18).

Abstract: A device for separately packaging two components to be mixed together on first use, and for dispensing the resulting mixture, the device being of the type comprising two superposed containers suitable for communicating with each other via a passage and capable of rotating relative to each other about an axis of rotation without moving axially, a single shutter disposed in said passage to close it during separate storage of the components, one of the containers further including a guide mechanism for guiding displacement of the shutter in said passage and the other container including a drive mechanism for transforming relative rotation of the two containers into axial displacement of the shutter in the guide mechanism, thereby opening the passage. The shutter further includes a retaining mechanism suitable for limiting its displacement in the guide mechanism at the end of relative rotation of the containers.