Thermal Solutions, Inc.

Process and Equipment Development, Inc.

William W Heine

Brian L Clothier

Amil J Ablah

David E May

Robert E Wolters, Jr

Dennis M Craig

Temperature self-regulating food delivery systems are provided having a magnetic induction heater ( ) and an associated food container ( ) equipped with an essentially permanent ferromagnetic heating element ( ). The heater ( ) and heating elements ( ) are designed so as to heat the element ( ) to a user-selected regulation temperature when the elements ( ) are coupled with the heater's magnetic field, and to maintain the temperature in the vicinity of the regulation temperature indefinitely temperature regulation is a heating achieved by periodically determining at least two parameters of the heaters resonant circuits related to the amplitude of the resonant current passing therethrough during heating and responsively altering the field strength of the magnetic field. Preferably, the value of the resonant circuit amplitude and the rate of change of the amplitude are determine.

Induction heating pizza delivery systems

Temperature self-regulating food delivery systems are provided having a magnetic induction heater (,) and an associated food container (,) equipped with an essentially permanent ferromagnetic heating element (,). The heater (,) and heating elements (,) are designed so as to heat the element (,) to a user-selected regulation temperature when the elements (,) are coupled with the heater's magnetic field, and to maintain the temperature in the vicinity of the regulation temperature indefinitely temperature regulation is a heating achieved by periodically determining at least two parameters of the heaters resonant circuits related to the amplitude of the resonant current passing therethrough during heating and responsively altering the field strength of the magnetic field. Preferably, the value of the resonant circuit amplitude and the rate of change of the amplitude are determine.

Induction heating, temperature self-regulating

Disclosed is an apparatus for effecting precise thermal cycling of articles by alternately employing electrical heating elements and circulating cooling water in conjunction with a controller to accurately regulate the temperature of a working surface. The apparatus includes a thermal tray in which articles are mounted in recesses formed in the working surface region thereof. The thermal tray is removable from the base of the apparatus which houses the heating elements and cooling water. Thus, thermal trays are interchangeable atop the base as desired. Also disclosed is a weight assembly for maintaining the articles in the recesses. This allows the thermal tray of the present invention to be transported to each of a plurality of processing stations, including the aforementioned thermal processing atop the base, while still maintaining precise positioning of the articles throughout each of the processes.

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Palatine, IL, United States of America

William W Heine