Abstract: A winding (12) is wound around a core (10) having a circular cross-section. The wound core (10) is then deformed by pressure between flat surfaces (14, 16) until a flat contact surface is created which allows the use of sliding brushes, for example.

Abstract: At a control signal generator for generating a pair of control signals by means of a control stick (10) deflectable in two directions a disc (22) is attached to the control stick (10) about its pivot mounting (12). Approach sensors (18) are located in a base portion (10) and respond to the motion of the disc (22) about the pivotal point (14) of the control stick (10). This results in a compact arrangement with contactless pick-offs, which are not subject to wear and which cannot be mechanically damaged even with rude operation.

Abstract: A slider for resistor or slip conductors. The slider includes a generally U-shaped slider support having a center portion and two legs, leaf springs attached to each one of the legs and extending into the interior of the U-shaped slider support, and contact means guided by the leaf springs and kept in engagement with the resistor or slip conductor. In accordance with the invention, one of the leaf springs supports the contact means, and the other leaf spring resiliently engages the first leaf spring on the side remote from the resistor or slip conductor.

Abstract: A slider arrangement for potentiometers is presented, which provides good contact between the potentiometer resistor and the slider with low friction and low wear. With each position of slider guide means, the slider contacts the potentiometer resistor in an associated well defined point regardless of the direction of movement of the guide means. To this end the slider comprises a wire helix in crossed relation to the potentiometer resistor. The wire helix is urged into engagement with the potentiometer resistor by a strap extending into the wire helix and engaging the inner side thereof under spring tension, whereby engagement between helix and strap and the required contact pressure between helix and potentiometer resistor is established. The strap has bays or recesses in the area of the potentiometer resistor to permit the turns of the wire helix to conform to the cross sectional contour of the resistor.