Buderus Aktiengesellschaft

Hartmut Stiegler

Herbert Frowein

Burno Heinzl

Horst Schmidt

Willi Huttel

Joachim Wurz

Karl-Heinz Schmitz

An article for mixing a tray holder has a generally rectangular side panel having upper and lower edges and inner and outer faces, a generally rectangular roof panel projecting generally perpendicular from the inner face of the side panel along the upper edge thereof, and a generally rectangular floor panel projecting generally perpendicular from the inner face of the side panel along the lower edge thereof. These panels are formed along a plane perpendicularly to and bisecting all panels with a weakened region and the roof and floor panels have straight outer edges remote from the side panel that are complementarily shaped to opposite sides of the plane. Thus according to the invention the article can be subdivided into two complementary and interfitting pieces along the plane adn joined together to make a half-depth holder by bonding together the complementary outer edges. A full-depth holder can be made by bonding together the outer edges of two such articles. Thus it is possible with a single such article made by a single mold to make single or double-depth holders. Manufacturing costs are thereby held down.

Manufacture of tray holder from single molded article

A muffle oven for the heating of foodstuffs has a closed housing with a treatment chamber separated by a perforated partition from an air-circulating compartment which forms rear and lateral air spaces surrounding that chamber on three sides. A radial blower, driven by an external motor located at an intermediate level in the rear air space, is bracketed by an upper and a lower baffle each having two aerodynamic deflecting surfaces converging at a flow-dividing edge which cause the air discharged by the blower to spread symmetrically into the lateral air spaces after passing two sets of heating elements. The flow-dividing edges of the two baffles are relatively offset and lie on opposite sides of a vertical axial plane of the rotor so as to point toward the rotor at locations where the flow of the discharged air is essentially vertical. The heated air, after entering the treatment chamber from the sides, is returned to an axial intake of the blower.

Muffle oven for heating foodstuffs

Growing community of inventors

Herborn, Germany

Hartmut Stiegler