Microwave heating apparatus with browning feature
AssigneeRaytheon Company
InventorPalmer P. Derby
Life of this patent
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Abstract
Apparatus for heating with microwave energy is disclosed comprising a plurality of spaced microwave elements in a flexible webbing adapted to fit the contour of any object to be cooked. The microwave elements, such as cups, have a height of substantially one-quarter of a wavelength. An intense fringing electric field pattern results with the electric field being 180.degree. out of phase in close proximity to the open ends of the elements. The material contacted by these ends will be suitably browned or seared. An impedance matching dielectric member may also be provided in contact with the apparatus.
Claims3
Apparatus for heating with microwave energy comprising:
- a flexible member of a microwave permeable material;
- a plurality of spaced conductive elements supported by said flexible member;
- each of said elements defining wall structure having a height of substantially one-quarter of a wavelength of the microwave energy;
- said elements defining adjacent one end thereof a fringing electric field pattern in the presence of microwave radiated energy for heating of surfaces in close proximity to said ends.
Dependencies are inferred from the claim text.