A contact arrangement (7) for electrically contacting an inner and an outer bearing element (5a, 5b) of a rotational bearing (3) allowing a coaxial rotation between the inner and outer bearing elements (5a,5b) is provided. The contact arrangement (7) comprises

- a contact holder (9) mountable on a first one of the two bearing elements (5a),

- at least two sliding contact elements (11a,11b) mounted on the contact holder (9),

wherein each sliding contact element (11a,11b) is suitable for forming a sliding contact with a part of a surface (13a,13b) of the second one of the two bearing elements (5b), wherein the contact holder (9) and the sliding contact elements (11a, 11b) are disposed such that a secondary winding (15) is formed with at least one winding loop (15) extending along a first sliding contact element (11a), the contact holder (9), the second contact element (11b) and a part of the surface (13c) of the second bearing element (5b), provided that the surface is formed of an electrically conductive material.

The contact arrangement (7) further comprises a primary winding (17) with at least one winding loop (17i), wherein the primary (17) and secondary (15) windings are disposed to form a transformer.

Furthermore, a rotational bearing with at least one such contact arrangement is provided, as well as a wind turbine with such a bearing and a method for operating such a rotational bearing.

This invention relates to a screen device comprising an upwardly and downwardly rollable screen, a motor (1) to drive the upward and downward rolling movement and a compactly installable electrical connection with a male (2) and a female connecting piece (6) for the electrical connection of a power supply cable (5) to the motor (1), wherein the contact pins (4) of the male connecting piece (2) extend substantially at right angles to the electrical wires (3) to which they are connected and/or wherein the contact sockets (8) of the female connecting piece (6) extend substantially at right angles to the electrical wires (7) to which they are connected.

The invention relates to a contact means (100) for attaching an end of a cable (110). The contact means (100) has a casing (300) with an inner chamber (320) for receiving a section of the cable (110) in the region of the cable end, a pull relief element (200, 201, 202, 203) which can be fastened to the casing (300) in the inner chamber (320), with a pull relief section (220, 221, 222, 223) and at least one contacting section (240, 241), a contact insert (400), a first contact element (520) which can be arranged in the contact insert (400), and a second contact element (510) which can be connected to a line (140, 610). The pull relief section (220, 221, 222, 223) of the pull relief element (200, 201, 202, 203) is formed to fix a cable sheath (120) of the cable (110). The contacting section (240, 241) of the pull relief element (200, 201, 202, 203) is formed to contact a shield (130) of the cable (110). The first and second contact elements (510, 520) can be plugged together to produce an electrical connection. The first contact element (520) has a central contact section (541) and two resilient contact sections (545) arranged laterally from the central contact section (541).

Die Erfindung betrifft eine Kuppeleinrichtung, die einen Werkzeughalter (1) und einen Werkzeugaufnehmer (21) umfasst. Die Aufgabe der Erfindung ist es, eine robuste Kuppeleinrichtung zu schaffen, bei der der Werkzeughalter (1) automatisiert an den Werkzeugaufnehmer (21) gekuppelt werden kann und dabei sowohl elektrische oder optische Verbindungen als auch Fluidverbindungen automatisch gekuppelt werden. Diese Aufgabe wird durch den Werkzeughalter (1) gelöst, wobei der Bund (6) und die Kontaktfläche (7) von zumindest einer ersten Öffnung (8) und zumindest einer zweiten Öffnung (10) durchdrungen werden, und wobei der ersten Öffnung (8) eine elektrische oder optische Verbindung (9) zugeordnet und die zweite Öffnung (10) als Fluidführung ausgebildet ist.