The warning device (14) has at least one sensor (36) to report the locking position of the locking device (13). The sensor has an electricity supply (41) or is connected to an external one. Visual and acoustic warning is given if the sensor detects that th...

The trailer coupling for use on a car (12) comprises a coupling arm (15) which is positioned under the car when not in use and brought forward for use. It has a return spring (47) which biases it towards the storage position when a lock (20, 24) is release...

The tow hook (6) for a car is mounted so that it can rotate about its inner vertical arm (8) in a bearing (11) fitted around the arm from a position where it points forward under the car to a position where it points backwards for use. The bearing itself c...

A drive control (8) for a drive motor system (25) in a trailer coupling (10) has a pulling component (17) to couple up a trailer (13) to a pulling vehicle. Control devices (11) control the drive motor system so that it moves the pulling component into a pr...

A detector device (12) determines whether a trailer (13) is using an electric feeder contact (15) allocated to a trailer coupling (10). A locking device (11) prevents a drive motor (16) from being triggered by motion in a pulling component (17) into an ina...

The rotary bearing part (7) is able to swivel about a swivel axis (11) aligned at right angles to the transverse plane between a raised position and an incline position and in a second section is swivelled from the raised to the incline position so that th...