Abstract: The invention relates to a vacuum-cleaner nozzle for vacuuming an underlying surface, having a suction channel which opens out into a suction mouth. In order to form the vacuum-cleaner nozzle such that it has a relatively pronounced suction action for a sustained period of time, it is proposed according to the invention that the vacuum-cleaner nozzle comprises a lifting mechanism which interacts with the underlying surface and by means of which it is possible to change the distance of the suction mouth from the underlying surface on a periodic basis.

Abstract: The invention relates to a device for expelling liquid from a wiping element which is held on a wiping head of a surface cleaning device so as to form a wiping surface, comprising a container, in which a wiping element holding device accommodating the wiping element as well as a driving device are arranged, wherein the wiping element holding device can be driven by means of the driving device so as to rotate about an axis of rotation. In order to further develop the device in such a manner that it has a lower consumption of energy it is suggested in accordance with the invention that the wiping element holding device form a receiving means, into which the wiping element can be inserted with a surface normal of the wiping surface aligned at an angle to the axis of rotation.

Abstract: The invention relates to a device for rinsing out and spin drying a wiping body, which is mounted on a wiping head of a surface cleaning device, comprising a container which has a rinsing region and a spin dryer region, a wiping head mount being mounted rotatably in the spin dryer region, into which wiping head mount the wiping head can be inserted together with the wiping body and which wiping head mount can be driven rotationally by means of a drive device in order to remove moisture from the wiping body, the rinsing region accommodating a cleaning fluid, and it being possible for the wiping head together with the wiping body to be inserted into the rinsing region.

Abstract: The invention relates to a device for spinning liquid out of a wiping body, which is mounted on a wiping head of a surface cleaning device, comprising a container, in which a wiping head mount is mounted rotatably, into which mount the wiping head can be inserted together with the wiping body and which can be driven rotationally about an axis of rotation by means of a drive device in order to remove moisture from the wiping body. In order to further develop the device in such a manner that its power consumption can be kept to a low level, it is proposed according to the invention that the device comprises a measuring element for determining a degree of drying or a spin drying time of the wiping body, there being associated with the measuring element an indicating unit for indicating when a specific degree of drying has been reached or a specific spin drying time has elapsed.

Abstract: The invention relates to a device for expelling liquid from a wiping element which is held on a wiping head of a surface cleaning device so as to form a wiping surface, comprising a container, in which a wiping element holding device accommodating the wiping element as well as a driving device are arranged, wherein the wiping element holding device can be driven by means of the driving device so as to rotate about an axis of rotation. In order to further develop the device in such a manner that it has a lower consumption of energy it is suggested in accordance with the invention that the wiping element holding device form a receiving means, into which the wiping element can be inserted with a surface normal of the wiping surface aligned at an angle to the axis of rotation.

Abstract: A system for monitoring the course and braking means of a vehicle are provided, which is freely movable and particularly inductively steered. The vehicles comprise drive means and at least one steerable driven wheel, braking means, and a sensor for scanning a guideline. The system comprises an arrangement (25, 27), in which an emergency braking operation for stopping the vehicle within an emergency stopping distance is generated in dependence on a signal which corresponds to the angle between the longitudinal axis of the vehicle and the guideline, and another signal, which corresponds to the lateral departure of the longitudinal center line of the vehicle adjacent to the sensor from the guideline. The emergency stopping distance is shorter than the distance which the vehicle would travel to collide with an obstacle. Limiting values for a maximum or changing steering angle, the contour of the vehicle, the speed of travel and the braking distance under maximum load.