Litton Systems, Inc.

Gerald L Larson

Daniel A Baker

Robert L Ellis

An apparatus and method for controlling cooking in a microwave oven whereby the power input to the cooking cavity is held at a predetermined, constant level. Available line power is measured through a winding or tap on the high voltage transformer secondary and the duty cycle of the magnetron power supply is adjusted to maintain a constant average power output.

Constant power microwave oven

An improved touch panel switching device including a thin, flexible plastic sheet foldable to locate respective switch contactors and contacts opposite each other, an insulating spacer member intermediate the switch contactors and contacts and having openings to enable contactor and contact communication, a rigid backing on one side and a thin, metal sheet on the other side of the plastic sheet, the metal sheet being relatively stiff and depressable at a switch position to enable engagement of a respective switch contactor and contact.

Growing community of inventors

Minnetonka, MN, United States of America

Gerald L Larson