US Patent 7342203 Oven chamber including shielding member

In one example, an oven chamber has a heating element located within a first section of the oven chamber, and includes a shielding member that extends over the first section of the oven. The shielding member has an outer boundary, and one or more portions of the outer boundary are spaced away from walls of the oven chamber so as to form an open space through which convective heat is able to pass. The shielding member is supported above the heating element by support elements on which the shielding member rests and a portion of the outer boundary of the shielding member that extends away from the remainder of the shielding member to the bottom wall of the oven chamber, and the latter portion of the outer boundary of the shielding member attaches to a bracket fastened to the bottom wall of the oven chamber.