Abstract: In an air balloon (1) comprising a leak-tight casing (2) consisting of one or more layers containing an inert gas (3) that is lighter than air and provided with a part (4) designed to be opened reversibly to enable deflation of the said balloon (1), this part (4) is positioned such that the axis (K--K) perpendicular to its aperture (4a) is inclined to the horizontal at an angle between 0.degree. and 180.degree., but perferably at an angle equivalent to 90.degree..

Abstract: An electric domestic appliance (1) with programmer (5) for washing and/or drying dishes or laundry which uses in its cycles hot water from a central heating system introduced into its interior mixed by a mixer (2) with a predetermined quantity of cold water, and which also includes coil pipes (3) disposed in the vicinity of the section where the washing and/or drying takes place. Such pipes can be connected to the mixer (2) by a diverter (4) which, on command from the programmer, can divert the flow of water emerging from the mixer towards them or towards the interior of the appliance (1). The heat of the coil pipes can also be used to achieve drying via electric fans.