Abstract: A utensil having wall elements, separate baskets for insertion therein and associated serving plates, into which the baskets can also be inserted. The wall elements have a top handling edge and a bottom edge with an indentation all round the outside so that the wall elements can be stacked together with other identical wall elements. In the vicinity of the bottom edge there is a rim on the inside of the wall elements. The associated baskets have a perforated or slotted bottom, are made from chromium-nickel steel and have a perpendicular edge with a horizontal rim. The baskets can be inserted by this edge onto a rim inside the wall elements. The baskets have two folding handle attachments for this purpose. In the separate serving plates there is a recess into which the baskets made of chromium-nickel steel can be snugly inserted.

Abstract: An air pump is configured as a reciprocating compressor. On a fuel tank, there is fitted a cylinder of the air pump, in which an axially displaceable piston rod, having a handle and a piston, is coaxially disposed. The piston divides the interior of the cylinder into two chambers. The lower one of these chambers, lying closer to the fuel tank, communicates with the fuel tank via a first one-way valve, which permits only the entry of air into the fuel tank. The upper one of these chambers, lying farther from the fuel tank, communicates unchecked with the atmosphere. The one-way sealing of the piston against the cylinder allows the passage of air past the piston only in the direction from the upper chamber to the lower chamber. The piston rod is provided with a coaxial duct and a second one-way valve which is opposed to the first. The two chambers are able to intercommunicate via the coaxial duct and the second one-way valve, which, from a predetermined pressure, allows air to escape to the atmosphere.