Abstract: An electromagnet which is penetrated by a longitudinal axis includes: an armature space and an armature which is arranged longitudinally movably in the armature space, the armature having a penetration opening, and the armature supporting at least one closure element which is mounted movably in the penetration opening, the closure element being configured to open or to close the nozzle, the closure element comprising a guiding element, which guides the closure element in the penetration opening, and a sealing element which is supported by the guiding element, wherein the sealing element is held in a non-positive and/or positively locking or floating manner on the guiding element.

Abstract: The invention comprises a valve that can be operated by a drive, wherein the drive positions an adjustment element relatively to a nozzle for opening and closing the nozzle. On its side facing the nozzle, the adjustment element has a sealing element resting on the nozzle seat, when the valve is closed, and being lifted from the nozzle seat, when the valve is opened.

Abstract: The invention refers to a valve comprising a main nozzle arranged between inlet and outlet, and a pilot nozzle. The main nozzle has a main nozzle fit. It is sealed by a sealing body. The pilot nozzle has a pilot nozzle fit that can be sealed by a pilot nozzle body. A movable operating element arranged in the valve serves for opening and closing the main and pilot nozzle. When the valve is opened, first of all, the already accelerated operating element lifts the pilot nozzle body from the pilot nozzle fit.

Abstract: A nozzle of a valve includes a nozzle edge limiting a nozzle opening with a sealing surface that can be sealed or released by a nipple. Spaced apart from the nozzle edge at least one supporting surface for the nipple is provided on the nozzle. The supporting surface is spaced apart from the nozzle edge by a distance area.

Abstract: The invention refers to a magnetic drive comprising a magnetizable body and an at least partly magnetic hinged armature. Depending on the degree of magnetization of the magnetizable body the hinged armature can take at least two different positions on the body. The hinged armature is formed by an armature support carrying a magnetic armature part.

Abstract: The invention refers to a valve, in particular a pneumatic valve with a tappet or nipple provided on an actuator member that opens or closes a passage opening for a medium depending on the position of the actuator. A tappet is provided the spring of that presses the tappet or nipple on the passage opening in the closed position.

Abstract: The invention refers to a solenoid which comprises at least one armature supported in an armature space. The armature space is encircled by a coil carrying a number of windings which can be loaded with current. The magnetic field generated when loaded with current moves the armature against the pole core. In the armature a rebounding tappet is supported moving. Its tappet front facing the pole core projects, when not electrified, over the front of the armature.

Abstract: The invention relates to a method for producing porous SiO2 green bodies having an extremely high green density, or porous SiO2 green bodies having an internal density gradient which is adjusted in a targeted manner. The inventive method is characterised in that a porous SiO2 green body known per se and consisting of amorphous SiO2 is redensified by electrophoretically depositing SiO2 particles in the pores of the green body.

Abstract: A pneumatic cylinder with damping in the end position, also comprising a housing in which at least one slide rod element is mounted with at least one sealing element, in such a way that said slide rod element is linearly displaceable. At least one damper sleeve or its bearing arrangement is associated with the slide rod element, said bearing arrangement engaging with front-end bearing elements in the end positions. According to the invention, the damper sleeve or its bearing arrangement has at least one indentation for damping the end position and for ventilation.

Abstract: A control component such as a valve or throttle member for a hydraulic system comprises an outer member, and a body portion disposed in the outer member and having an outside surface co-operable with an inside surface of the outer member, the outer member and body portion being movable relative to each other. The flow duct extending between the inlet and outlet of the component includes at least one flow passage which opens at the outside surface of the body portion, and the mouth opening of the flow passage communicates with a curved duct portion which extends at an inclined angle relative to a radial plane through the body portion. The flow section of the or each duct portion decreases towards the tip thereof, to provide finely adjustable control of the flow of fluid through the component.