Abstract: A coupling device has two releasably interconnected coupling parts which are movably arranged relative to one another in at least one direction of rotation. Each coupling part has fluid channels which are separated in groups from each other and open into respectively assignable connecting spaces. The connecting spaces are located at adjacent end sides of the coupling parts and are separated from one another within a coupling part.

Abstract: The invention relates to a coupling device having two releasably interconnected coupling parts (1, 3) which are movably arranged relative to one another in at least one direction of rotation, characterized in that each coupling part (1, 3) has a plurality of fluid channels (x1-x3, y1-y3,) which are separated in groups from each other and open into respectively assignable connecting spaces (39, 41, 43). Said connecting spaces are located at adjacent end sides (15, 17) of the coupling parts (1, 3) and are separated from one another within a coupling part (1, 3).

Abstract: A coupling device, in particular a multiple coupling (1), connects a first line portion to a second line portion by a first coupling body (3) and second coupling body (5). A connection unit (23, 25) can be inserted into an accommodating opening (41, 42) in each coupling body (3, 5). A plug-in connection between line portions having electric conductors has an electrical connector (63) with plug-shaped and/or socket-shaped contact elements (67, 69). The connection unit (23, 25) is a cartridge with a single-part, sleeve-shaped housing (37) having a through-passage (39) accommodating the connector (63).

Abstract: The invention relates to a connection unit for a coupling device, in particular a multiple coupling (1), for the plug-in connection of at least a first line portion to a respective second line portion by virtue of a first coupling body (3), to which respective first line portions can be connected, being plugged together with a second coupling body (5), to which respective second line portions can be connected, wherein the connection unit (23, 25) can be inserted into an accommodating opening (41, 42) in a coupling body (3, 5) and, in order to form a plug-in connection between line portions having electric conductors, has an electrical connecting means (63) with plug-like and/or socket-like contact elements (67, 69), and wherein the connection unit (23, 25) is characterized in that it is designed in the manner of a cartridge with a single-part, sleeve-like housing (37) which has a through-passage (39) accommodating the connecting means (63).