The Maytag Company

William H Hunter

Frank E Ross

A rotating antenna is provided for use in a microwave oven having drive apparatus for rotating the antenna, a heating cavity, a source of microwave energy and a waveguide between the heating cavity and the source of microwave energy. A probe extends into the waveguide for coupling with the microwave energy and is connected to a center-fed dipole radiator in the heating cavity. Radiation modifying elements are integral with the dipole radiator to provide increased radiation in the central portion of the heating cavity. Impedance balancing elements are also integral with the dipole radiator and cooperate with the probe to effectively match the impedance of the source of microwave energy with the impedance of the heating cavity to permit substantially full microwave power to be delivered to a cooking load.

Rotating antenna for a microwave oven

An automatic fabric washing machine is selectively operable through a plurality of cycles for washing either permanent press or regular fabrics. The drive system is selectively operable in either low or high speed for agitation of the fabric load or to spin the fabric basket for extraction of liquid from the fabric load. Circuitry is provided for bypassing the selected drive speed to assure that the initial cool-down spin increment for the permanent press cycle will always be at a low speed to reduce the quantity of liquid pumped from the machine and to allow the fabrics to cool down with potentially reduced wrinkling. After the assured slow speed initial spin increment, the machine will proceed through the remainder of the cycle at the operator selected speeds.

Growing community of inventors

Newton, IA, United States of America

William H Hunter