Abstract: A harness for holding and supporting at least one gas pressure-container. The harness includes a backplate, a container holder mounted on a first side of the backplate, and two elongated support straps disposed on respective sides of a symmetry line dividing the backplate into a left and a right part. A first end of the respective elongated support straps is attached to an upper part of the backplate. The harness further includes a waist belt fastened to a lower part of the backplate. Mounted on a lower part of a second side of the backplate is a first element which is at least substantially rigid and parallel with the backplate, and which is pivotably mounted on the backplate at a pivot point. Each of second ends of the elongated support straps is attached to the first element on a respective side of the pivot point.

Abstract: A electrical plug for easily connecting to the electrical wires of an electrical cord. The electrical plug includes a housing with a front face of the housing having a plurality of prongs extending therefrom. The housing has a plurality of elongate channels disposed therein. Each of the channels has a contact therein electrically connecting the respective channel to an associated prong. A fuse is disposed in the housing and is electrically connected between one of the contacts and its associated prong. The housing has a passage therein designed for extending therethrough an end of an electrical cord into the housing.

Abstract: Method and apparatus for a mainly temporary ventilation of a room. A fan blows air from the room through an inflatable balloon, being placed in a permanent opening, e.g. a window, in a wall limiting the room. The balloon is provided with at least one exhaust opening being dimensioned so that an overpressure is built up inside the balloon sufficient to keep the balloon inflated and in abutment with the limitations of the opening.