Abstract: An injection molding method for manufacturing a functional part having a recess, e.g., a borehole, includes a) injecting a first thermoplastic component into an injection mold, in the cavity of which a first mold core is situated, b) replacing the first mold core with a second mold core, the second mold core being smaller than the first mold core, and the second mold core being situated in the cavity formed in the first thermoplastic component by the first mold core in such a way that the second mold core is situated at a distance from the first thermoplastic component by an intervening space, c) injecting a second thermoplastic component into the space between the second mold core and the first thermoplastic component, and d) removing the second mold core.

Abstract: A slide valve having a housing and a slide element guided within the housing, at least two hydraulic connections being present on the housing, and at least one of the hydraulic connections communicating hydraulically with at least one control port in a cylindrical guide surface that guides the slide element, the control port extending only over a limited distance in the circumferential direction of the guide surface and cooperating with a control edge of the slide element assigned thereto, the slide element having an essentially cylindrical outer contour and at least one end face, and the slide element being produced by injection molding, and at least one injection point being configured on the end face.

Abstract: A slide valve having a housing and a slide element guided within the housing, at least two hydraulic connections being present on the housing, and at least one of the hydraulic connections communicating hydraulically with at least one control port in a cylindrical guide surface that guides the slide element, the control port extending only over a limited distance in the circumferential direction of the guide surface and cooperating with a control edge of the slide element assigned thereto, the slide element having an essentially cylindrical outer contour and at least one end face, and the slide element being produced by injection molding, and at least one injection point being configured on the end face.

Abstract: An injection molding method for manufacturing a functional part having a recess, e.g., a borehole, includes a) injecting a first thermoplastic component into an injection mold, in the cavity of which a first mold core is situated, b) replacing the first mold core with a second mold core, the second mold core being smaller than the first mold core, and the second mold core being situated in the cavity formed in the first thermoplastic component by the first mold core in such a way that the second mold core is situated at a distance from the first thermoplastic component by an intervening space, c) injecting a second thermoplastic component into the space between the second mold core and the first thermoplastic component, and d) removing the second mold core.

Abstract: A method is disclosed for identifying and producing L-nucleic acids which interact with a target molecule having a natural configuration, as well as the L-nucleic acids produced by this method. Also disclosed is the use of D-nucleic acids which bind to the optical antipode of the target molecule as a matrix for producing L-nucleic acids with an identical sequence, and pharmaceutical compositions and kits which contain the disclosed L-nucleic acids.

Abstract: A support element for a wiper strip belonging to a wiper blade for motor vehicle windows is proposed, which assures proper contact of a wiper strip, belonging to the wiper blade, with the window to be wiped. The support element is embodied as elongated in bandlike fashion, and it comprises an elastic plastic. The rubber-elastic wiper strip, elongated in bandlike fashion, can be secured to the support element longitudinally axially parallel. An especially durably operationally reliable support element is obtained if the support element is made from a fiber-reinforced thermoplastic plastic, and the fibers are admixed with the plastic.

Abstract: An arrangement of two elements to be connected to each another of thermoplastic material is proposed. For instance, an annular coil (7) is disposed in a tight housing; the housing (8) and the coil body (1) comprise the thermoplastic material with different melting points, and the two intermesh with one another via grooves. The housing (8) sheathes a coil end plate (3), in the form of an extension, almost completely on at least one side, that is, the side on which the coil end plate is disposed. On the other face end (4) and on the outer circumference of the coil end plate (3), the coil end plate (3) has annular grooves (5, 6), into which the thermoplastic material of the housing (8) can be introduced during the sheathing in a hardening manner.

Abstract: A simplified, economical, noise-abating mode of securing a unit embodied for instance as a valve. For securing the unit, the unit has a housing with a first portion having a first encompassing outer face and at least one second portion having at least one second encompassing outer face, wherein a first sealing ring can be mounted on the first outer face, and the first portion and first sealing ring can be introduced into a recess of an installation wall. A second sealing ring can be mounted on the second outer face of the second portion, and the second portion and second sealing ring can likewise be introduced into the recess, so that the support of the unit in the recess is effected by means of the first and second sealing rings without the first and second outer faces of the unit resting on inner faces of the recess.

Abstract: A method for positionally securing two components together, in which a hollow body is introduced into the two components. Once the final position of the components relative to one another has been established, the hollow body is driven directly into the second component with the application of axial pressure and sonic energy. The method is suitable for employment with thermoplastic components whose relative position to one another is known beforehand, an example being in the assembly of housing parts of a rotary adjuster for controlling a flow cross section in internal combustion engines.