Thermostat probe for combined uhf and infrared energy cooking oven

Claim 1

A COMBINED UHF AND INFRARED COOKING APPARATUS COMPRISING WALLS FORMING AN OVEN CAVITY, ONE WALL OF THE CAVITY INCLUDING A DOOR FOR GAINING ACCESS THERETO, A UHF ENERGY GENERATOR HAVING A TRANSMISSION AND SEATING MEANS FOR COUPLING THE UHF ENERGY WITH THE CAVITY, RESISTANCE HEATING MEANS POSITIONED WITHIN THE CAVITY, AND A THERMOSTATIC CONTROL SYSTEM FOR GOVERNING THE ENERGIZATION OF THE RESISTANCE HEATING MEANS, SAID CONTROL SYSTEM COMPRISING A THERMOSTAT PROVIDED WITH AN ELONGATED TEMPERATURE SENSING PROBE POSITIONED WITHIN THE CAVITY ADJACENT THE RESISTANCE HEATING MEANS, AND A METALLIC SUPPORT MEANS FOR SHIELDING THE SENSING PROBE AND RENDERING THE PROBE INSENSITIVE TO THE UHF ENERGY, SAID SUPPORT MEANS BEING A METALLIC TUBE WHICH IS ATTACHED TO THE WALL OF THE OVEN CAVITY AND ENCOMPASSES THE SENSING PROBE THAT IS SEATED THEREIN ON A PLURALITY OF SPACED GROUNDING POINTS TO SERVE AS LOW IMPEDANCE COAXIAL TRANSMISSION LINE, THE SUPPORT TUBE OF LOW THERMAL MASS SO AS TO EXPOSE THE SENSING PROBE TO THE INFRARED ENERGY OF THE RESISTANCE HEATING MEANS.