Amana Refrigeration, Inc.

Buddy J Austin

James E Simpson

Arnold M Bucksbaum

A windowed door assembly for a combination microwave and hot air oven having a choke-coupling type seal formed around the periphery of the window opening to suppress the leakage of microwave energy from the area between the main body of the door and the window portion of the door. The window portion is removably connected to the main body of the door in a region of relatively high capacitive impedance to reduce the importance of the mechanical connection in suppressing the leakage of microwave energy from the oven.

Windowed and choked combination oven door

Microwave ovens typically have an oven cavity and a feed system for supplying microwaves through a feed opening into the cavity. Such ovens are inproved by providing a field stirrer rotatably mounted over and covering the feed opening. The field stirrer is a single conductive plate having a single radiating slot in the plate exposing only a portion of the feed opening to the cavity through the slot at any position of the plate during its rotation. The slot is in the shape of an arc or other shape which is tangentially longer than it is radially wide. The plate also has a plurality of wings, fins, or vanes outside the feed opening. The vanes and slot are arranged so that electrically identical positions of the plate occur only every full circle of rotation by virtue of bilateral symmetry at most. The plate is spaced from the feed opening and into the cavity by a sufficient distance to permit flow of microwave energy beneath the plate for distribution around the periphery of the plate and by the vanes. The geometry and dimensions of the slot, plate periphery, and vanes can readily be adjusted for best cooking in actual practice. In an additional embodiment the plate periphery cooperates with the feed opening in the manner of a slot without need of slotting the plate itself.

Microwave ovens for uniform heating

A utensil handle assembly for a utensil suitable for use in a microwave oven combining the advantages of metal with the advantages of plastic. A split metal ring is tightly drawn around the utensil and fastened together. A plastic handle is connected to the already fastened metal ring through a connecting area. The connecting area is made up of a series of wedges pressed together and bonded to form a permanent connection.

Growing community of inventors

Atkins, IA, United States of America

Buddy J Austin