Abstract: A multifunction panel for use in a building defines an interspace, optionally for the passage of air, and includes a first layer having a plurality of first shaped through-holes of a first predetermined diameter; a second layer having a plurality of cells defining a honeycomb or ribbed structure; a third layer having a plurality of second shaped through-holes of a second predetermined diameter, the first and the second holes being selectively open at the opposite ends of respective cells, so as to create a first configuration of a cell providing for the transit of air between the interspace and the internal environment, or vice versa, when a first hole opens at a first end and of a cell at a second hole opens at a second end of the cell, and further generating a Helmholtz resonator.

Abstract: A special `kart`-type vehicle is disclosed having independent suspension on all four wheels, featuring a rigid central structure which cradles the driver seat, and incorporating interchangeable and adjustable mechanical features designed to give adaptability to different conditions of use, and to the physical stature of a given rider. The special kind of adjustable, accessory-orientated design is such as to recommend the vehicle for dirt track, rough terrain and general off-highway use as well as for running on metalled road surfaces; likewise, a vehicle of the type might be used either for utility purposes or simply for sports or liesure activities.