Abstract: A bagless vacuum cleaner includes a dust container including a chromogenic material so as to have a controllable transparency.

Abstract: An operating element for a household appliance includes a base part with a projector and a sensor and an operating part that is movable relative to the base part. The projector of the base part is configured to display a selection menu as a function of a position of the operating part, with the selection menu being disposed in physical proximity to the operating element. The sensor is configured to detect a selection made in the selection menu.

Abstract: A beverage preparing device includes a beverage outlet that is vertically adjustable and is adapted to dispense a beverage into a receptacle. The beverage outlet has a safety device including a safety switch or safety sensor for interrupting height adjustment of the beverage outlet when the beverage outlet approaches or contacts the receptacle. An actuating member is pivotable about a joint so as to activate the safety switch or safety sensor. The actuating member includes a contact surface adapted to activate the safety switch or safety sensor and an additional contact surface for interrupting the height adjustment of the beverage outlet when an upper end position of the beverage outlet is reached.

Abstract: A baking appliance includes a heatable baking chamber and a door that closes the baking chamber. The door includes an inner pane facing the baking chamber when the door is closed and an outer pane facing outward when the door is closed. At least one holding element is configured to arrange the inner pane and outer pane so as to form at least one ventilation channel between the inner pane and outer pane. At least one cooling element is associated with the at least one holding element and extends into the at least one ventilation channel.