Abstract: The invention relates to a drive and evaluation unit for displacing an object to be displaced, particularly for raising and lowering a side window in a motor vehicle. The drive includes a commutator motor with a stator having two diametrically opposed permanent magnets. The magnets have cross-sectional shapes of a respective peripheral contour segment, having a radial inner peripheral contour segment which encompasses an armature over a respective inner peripheral angle. The armature is provided with ten grooves spaced around its periphery for holding armature windings that are configured as lap windings. The evaluation unit includes a device for determining the rotational position of the armature by evaluating the ripple count of the armature current. According to the invention, the armature windings are configured as short pitch windings, and the inner peripheral angle of the radial inner peripheral contour segment of at least one of the magnets is between 101° and 111°.

Abstract: Disclosed are a method for operating a piezoelectric drive system (10) used for adjusting movable parts (12, 14), especially in a motor vehicle (13), as well as a piezoelectric drive unit (10) comprising at least one piezo motor (12) that is fitted with at least one piezo actuator (18). At least one frictional element (30) of the piezo motor (12) makes it possible to generate a relative movement in relation to a frictional surface (14) located across from the frictional element (30). The at least one piezo actuator (18) is triggered with an excitation signal (93) by means of an electronic unit (42). A response signal (130) of the drive system (10) is detected using the at least one piezo actuator (18), a change in the load of the drive system (10) being recognized as a result of a change in the response signal (130).

Abstract: Disclosed are a piezoelectric drive unit (10) and a method for operating such a drive unit in order to adjust movable parts (11), especially in a motor vehicle. Said piezoelectric drive unit (10) comprises at least one piezo motor (12) that is fitted with at least one piezo actuator (18). At least one frictional element (30) of the piezo motor (12) makes it possible to generate a relative movement in relation to a frictional surface (14) located across from the frictional element (30). Said at least one frictional element (30) is disposed on a bridging web (28) of the motor (12). The bridging web (28) places the frictional element (30) at a distance (2) from the central axis (89) of the at least one piezo actuator (18), said central axis (89) extending in a longitudinal direction (19).

Abstract: The invention relates to a piezoelectric drive device for adjusting movable parts (11), particularly in a motor vehicle, having a piezo motor (12) having at least one piezo actuator comprising an electric piezo element, wherein at least one friction element (30) is disposed on the piezo motor (12), said element interacting with a friction surface (14) of at least one guide rail (16) opposite said friction element (30) for creating a relative movement, wherein the friction surface is positioned opposite of the friction element (30), wherein the at least one piezo motor (12) is supported on a first side (94) of a bearing bracket (8) and a counter element (98) is disposed on a second opposite side (95) of the bearing bracket (8), which exerts a counter force (97) to the friction element (30) onto the at least one guide rail (16).

Abstract: A rapid-action connection element for a compressed air hose (3) includes a filter (5) located in the discharge casing (4) for sealing a flow cross-section, a flow-through pressure piston (7) extending, at least partially into the discharge casing (4) and displaceable, within limits between outward position remote from the filter (5) in which the pressure piston (7) is sealed with respect to the discharge casing (4), and an inward position adjacent to the filter (5) in which the pressure piston (7) is open with respect to the discharge casing (4) for flow therebetween, and a flow-through rapid-action coupling member (6a) connected with the pressure piston (7).

Abstract: The invention relates to a drive and evaluation unit for displacing an object to be displaced, particularly for raising and lowering a side window in a motor vehicle. The drive includes a commutator motor with a stator having two diametrically opposed permanent magnets. The magnets have cross-sectional shapes of a respective peripheral contour segment, having a radial inner peripheral contour segment which encompasses an armature over a respective inner peripheral angle. The armature is provided with ten grooves spaced around its periphery for holding armature windings that are configured as lap windings. The evaluation unit includes a device for determining the rotational position of the armature by evaluating the ripple count of the armature current. According to the invention, the armature windings are configured as short pitch windings, and the inner peripheral angle of the radial inner peripheral contour segment of at least one of the magnets is between 101° and 111°.

Abstract: A rapid-action connection element for a compressed air hose (3) includes a filter (5) located in the discharge casing (4) for sealing a flow cross-section, a flow-through pressure piston (7) extending, at least partially into the discharge casing (4) and displaceable, within limits between outward position remote from the filter (5) in which the pressure piston (7) is sealed with respect to the discharge casing (4), and an inward position adjacent to the filter (5) in which the pressure piston (7) is open with respect to the discharge casing (4) for flow therebetween, and a flow-through rapid-action coupling member (6a) connected with the pressure piston (7).

Abstract: The invention relates to a gearbox drive unit (1), especially for adjusting movable parts in a motor vehicle. Said unit comprises at least one housing part (2) and at least one fixing dome (6, 7, 8, 9), which is used to secure the gearbox drive unit (1). The housing part (2) comprises a first connection point (45) and at least one other second connection point (46), whereon the fixing dome (6, 7, 8, 9) can be placed. The fixing dome (6, 7, 8, 9) is connected to the housing part (2) at either the first connection point (45) or at the second connection point (46) according to a screw image for fixation of the gearbox drive unit (1).

Abstract: The present invention relates to a method for the production of undergarments free of seams with high wearing and support comfort.

Abstract: An electric motor, including at least two permanent magnet segments disposed around a motor longitudinal axis, in which each permanent magnet segment has end faces extending in the direction of the motor longitudinal axis and is encompassed by two independent yoke ring segments that have a gap between them parallel to a symmetry plane extending through the motor longitudinal axis and the center of the permanent magnet segments in order to reduce the armature transverse field. In addition to the reduction of the armature transverse field, a weight reduction of the electric motor is also achieved. To this end, in a first region close to the end faces of the permanent magnet segments, the one-piece magnetically conductive yoke is provided with a larger cross section than in a second region close to the symmetry plane extending through the center of the permanent magnet segments. The construction is particularly suited for small electric motors, in particular d.c. motors that are excited by permanent magnets.

Abstract: In known retaining devices for electric motors, rotationally flexible retaining elements on the order of leaf springs are provided between a receiving housing and the electric motor and serve to decouple noise of the electric motor. The novel retaining device for an electric motor includes retaining elements that extend axially between a receiving housing and the motor housing. These retaining elements enable low-frequency decoupling below the frequencies to be decoupled; on the occurrence of natural resonance when the electric motor is turned on and off or there are shocks from outside, the torsional motion of the retaining elements is limited by stop elements. The retaining device is especially well suited to electric motors of blowers.

Abstract: An anchor rod has an axially extending anchoring region including an axially extending expansion section widening in the direction the rod is inserted into a borehole in a structural component. The anchor rod is held in the borehole by a hardenable mortar compound. The mortar compound is prevented from adhering to the anchoring region. Since the mortar compound does not bond to the anchor rod, if there is relative movement between the anchor rod and the hardened mortar compound, the expansion section develops compressive force deviating from the rod axis and acting on the mortar compound, while the compound maintains composite action with the structural component, particularly in a fractured tension zone of the structural component.

Abstract: An expansion dowel assembly includes an axially extending anchor bolt and an expansion sleeve laterally enclosing the bolt. At its leading end, the anchor bolt has an expansion cone displaceable opposite to the insertion direction of the dowel assembly relative to a conically shaped expansion region at the leading end of the sleeve. Initially, the cone angle of the expansion cone is larger than the cone angle of the expansion section of the sleeve. A circumferentially extending annular bead is located on the outer circumferential periphery of the expansion region. The expansion region is slotted in the axial direction and its wall thickness decreases in the circumferential direction toward the slots. At the outset of the sleeve expansion, it is greatly widened and the annular bead is pressed into the surface of the borehole in which the dowel assembly is inserted.

Abstract: An expansion dowel assembly includes an expansion sleeve, an expanding member and a bolt for pulling the expanding member into the expansion sleeve. The expansion sleeve has a leading end and a trailing end with a bore extending between its two ends. At the leading end, the bore is conically shaped and converges toward the trailing end. From the trailing end of the conically shaped section, the bore is cylindrically shaped and extends toward the trailing end to another smaller diameter cylindrically shaped section of the bore. At the transition between the two cylindrically shaped sections there is a stop shoulder which limits the pulling-in action of the expanding member and the radial widening of the expansion sleeve.

Abstract: An anchor dowel assembly includes an axially elongated sleeve with window-like openings extending through its wall transversely of the axial direction. Locking members are positionable within the window-like openings for displacement radially outwardly from the sleeve for effecting the anchoring action. The locking members are displaced radially outwardly by an expansion tool driven between the locking members by a force directed in the axial direction of the sleeves.

Abstract: An axially elongated expansion sleeve is formed from an extruded cylindrically shaped blank with a blind hole in one end. An axially extending part of the blank from the other end is deformed into a U-shaped section of uniform thickness. The U-shaped section is upset so that it increases in thickness toward the other end. The upset U-shaped section is shaped to provide it with a cylindrically shaped outside surface with the inside base of the section sloping toward the axis of the sleeve in the direction toward the other end.

Abstract: An expansion dowel assembly includes an axially extending dowel and an expansion member. In the expansion step the expansion member is axially displaced over a surface on the dowel providing form-locking engagement of the dowel assembly within a borehole. The surface on the dowel, over which the expansion member is displaced, is made up of two serially arranged axially extending surface sections. Each surface section is disposed at a different acute angle to the dowel axis.

Abstract: Drilling device for forming a borehole with an undercut, includes a cutting edge support mounted in a bearing housing so that it can rotate about an axis of rotation and pivot about a pivot axle extending transversely of the axis of rotation. A drive member via a drive shaft rotates the bearing housing and the cutting edge support. Initially, the drilling device forms a cylindrical borehole until the bearing housing contacts the material in which the borehole is formed. Then, due to relative axial displacement between the drive shaft and the bearing housing, the cutting edge support is pivoted and the cutting edges at the end of the cutting edge support within the base of the borehole makes an undercut. A stop in the bearing housing engages the cutting edge supports and limits its pivotal movement. A spring within the bearing housing returns the cutting edge support to its starting position when it is no longer pivoted to form the undercut.