Abstract: An air mattress has a plurality of air cells formed in or by an elastic casing. The air cells are connected in series and in parallel with each other by a plurality of air channels. Mattress sections and subsections are formed by combining the channels into groups providing at least one channel group for each section or subsection. Perforations pass through the casing outside the air cells and outside the air channels for ventilating. Air ducts interconnect neighboring mattress sections.

Abstract: A dosing apparatus for the decanting of exactly measured liquid volumes is equipped with a measuring or dosing spout. The spout is connectable to the liquid container. The spout has a through-bore in the form of a cylindrical bore in which a double piston is slidably received for a back and forth movement. Inlet flow passages and outlet flow passages are provided in the walls of the spout. A venting bore extends along the entire length of the spout and a venting hose connected to the venting bore reaches into the container for assuring a pressure equalization. The volume to be measured is determined by the diameter of the bore and by the spacing between two sections of the double piston less the volume of a piston rod interconnecting the two piston sections.