TODAY’S PATENT – ELECTRIC TOASTER OVEN

This was invented by Kazunori Amano (Kamo), Yoichi Sekigawa (Kamo), Nobuyuki Kojima (Kamo), and Shigeki Yamaguchi (Kamo). It was patented by the USPTO on March 29, 1988 bearing patent number US4734562A. The present invention relates to an electric toaster oven for toasting sliced bread and the like.

It is an electric toaster oven that can be used as an oven and a toaster at the same time. It has a heater or heaters to heat an object that is placed inside a baking chamber, a baked condition detector that determines whether the object is baked by detecting the heat it emits, a plate that forms part of the baking chamber’s wall and has a heat guide opening to transfer the heat emitted from the object through to the baked condition detector, a tubular guide to guide the heat to the detector, and a control circuit that regulates the amount of current supplied to the heater or heaters based on a detection signal provided by the baked condition detector.

The baked condition detector produces a signal equal to the difference between the two temperature-dependent output signals of the thermosensitive elements, which are placed under different thermal conditions. When using the electric toaster oven as a toaster, only then is the heat guide opening opened, or the baked condition detector is positioned across from the heat guide opening.