Abstract: An electric cooking oven comprising a cooking vessel (1), a microwave energy source and a waveguide (2') substantially parallelepiped in shape delimited transversally by two substantially rectangular surfaces (20', 21') located in two parallel planes separated by a predefined distance (d), the output of guided waves occurring in at least two zones (230, 231) located in an outlet plane (23') perpendicular to the two surfaces and delimited by two parallel edges (b'.sub.1, b'.sub.4) connecting the two surfaces. The length (1) of the edges is greater than the distance (d) separating the two surfaces (20', 21') so as to optimize the number of excited transversal electric and/or transversal magnetic modes inside the cooking vessel in excitation planes parallel to the outlet plane.

Abstract: The oven comprises a housing (1) enclosing an open cavity (4) which is closed by a door (6) pivotally mounted about a horizontal shaft (8) placed in the housing. The cavity includes a food-carrying tray (5) horizontally translatable via at least one motion transfer mechanism (10) controlled by the door. The motion transfer mechanism (10) includes several transmission stages, each consisting of a notched belt (12;23) meshing with two toothed wheels (13, 19; 26, 28) set respectively on two horizontal shafts, the shaft of one of the two wheels of the stage level being comprised of the pivoting shaft (8) of the door, and the shaft of one of the two wheels of the last stage extending into the cavity (4) and bearing another toothed wheel (35) that meshes with teeth on a lower edge (5a) of the food-carrying tray (5). The invention relates for instance to microwave ovens.