Abstract: An electrical heating device for a mirror includes a pair of electrically conductive heating lining plates providing for heat distribution on a mirror, and electrical conductors connected to the plates for connecting the plates to a source of power. An insulating layer is disposed between the plates, the insulating layer having openings, and PTC resistor platelettes disposed in the openings and in electrical contact with the pair of plates. One of the plates has a larger area than the insulating layer such that an outer peripheral edge portion of the one plate is spaced outwardly of the outer peripheral edge of the insulating layer, the other of the pair of plates not being larger in area than the insulating layer. The larger of the plates is adapted to be adhered to the backside of a mirror glass for defogging and demisting the mirror.

Abstract: A disc trimmer has two circular-like segmented condenser plates which can be rotated relative to each other. The disc trimmer has an optimally low initial capacitance, which is independent of the final capacitance, and this is achieved by forming a dielectric corresponding to the shape of at least one plate circular-like and connecting it to a plate in a way that they approximately cover each other.

Abstract: To seat an electrical circuit element in a metallized opening of a circuit board and permit escape of solder gases, a bead is placed on the insertion pin and formed with a surface facing the support board which is non-symmetrical with respect to the axis of the pin, and of the insertion opening. Preferably, the surface is conical, and on adjacent pins the cone angles are tilted in opposite directions to provide for the non-symmetrical positioning of any one cone and centered placement of the insertion pins in the insertion openings.

Abstract: To provide for uniform distribution of contact element bodies which are placed in a drum immersed in a galvanic bath and to provide contact to the metallic coating on components, the metallic coating of which is to be reinforced by galvanic deposition, the contact elements comprise tiny, especially cylindrical cores made of a material having approximately the same order of magnitude of specific gravity as the components, for example being made of a similar material, of glass, plastic, or the like, and coated with a metallic coating on the outside, essentially entirely covering the cores. The coating may be nickel or copper, and for use with tiny capacitors, lead-through elements, and the like, a preferred size of about the same length as diameter of the coated e.g. cylindrical cores is suitable, for example about 3 mm length and diameter. These elements can be made by multiple dry extrusion, with the edges rounded off before being coated.

Abstract: A ceramic structural body is formed with a plurality of adjacently located integrally connected ceramic thin wall tubes. The outer surfaces of the tubes are metallized to form one electrode of the capacitor, the inner surfaces of the tubes also being metallized to form the other electrode of the capacitor. Connection means are connected to the outer surfaces of at least one of the tubes and to the inner surface of at least one of the tubes; the inner and outer surfaces of the tubes may be sub-divided, and electrically isolated from each other by portions of the underlying ceramic material, or may be continuous, to form a continuous electrode.

Abstract: A support disk of insulating material is formed with at least two apertures therethrough located side-by-side, and has a metallization layer applied thereto shaped to form a common stator electrode. At least two disk rotors are placed against the common support disk, each having an electrically conducting shaft passing through the respective aperture of the stator, and each disk rotor having a rotor electrode thereon. The disk rotors are, respectively, of different sizes, of different dielectric constant, or of different thickness, or of different dielectric-temperature varying material, and each one of the shafts is carried out to a separate lead to provide a separate terminal for the rotors, individually, against the common stator electrode, to provide for coarse and fine adjustment, by varying, respectively, the rotor having the higher capacitor unit, or to provide for temperature compensation by simultaneously varying the position of two rotors of different dielectric-temperature coefficient.