Detachable automatic temperature control plug

Claim 1

A PLUG-TYPE AUTOMATIC TEMPERATURE CONTROL DEVICE FOR USE IN CONTROLLING RICE COOKERS, SAID RICE COOKERS INCLUDING A KETTLE AND A RESISTANCE HEATER FOR HEATING SAID KETTLE, SAID RESISTANCE HEATER HAVING TERMINALS FOR ELECTRICALLY CONNECTING SAID CONTROL DEVICE TO SAID RESISTANCE HEATER AND FOR MOUNTING SAID CONTROL DEVICE ON SAID KETTLE, SAID CONTROL DEVICE COMPRISING: A CASING MOUNTABLE IN OPERATION ON SAID KETTLE; AN ELECTRICAL CIRCUIT MOUNTED IN SAID CASING IN POSITIONS ELECTRICALLY ISOLATED THEREFROM FOR SUPPLYING ELECTRICAL POWER TO SAID RESISTANCE HEATER; A TEMPERATURE-RESPONSIVE DEVICE MOUNTED ON SAID CASING IN A POSITION ELECTRICALLY ISOLATED THEREFROM FOR SENSING THE TEMPERATURE WITHIN SAID KETTLE, SAID TEMPERATURE-SENSING DEVICE BEING ADAPTED TO EXTEND INTO AND OUTWARDLY OF SAID CASING AND SAID KETTLE WHEN SAID CASING IS MOUNTED ON SAID KETTLE; OTHER TERMINALS CONNECTED IN SAID ELECTRICAL CIRCUIT AND MOUNTED IN SAID CASING IN POSITIJONS ELECTRICALLY ISOLATED THEREFROM FOR ELECTRICALLY CONNECTING SAID CONTROL DEVICE WITH SAID TERMINALS OF SAID RESISTANCE HEATER, SAID CASING BEING ELECTRICALLY ISOLATED FROM SAID RESISTANCE HEATER WHEN SAID CASING IS MOUNTED ON SAID KETTLE, AUTOMATIC RESET-TYPE CONTACTS IN SAID ELECTRICAL CIRCUIT MOUNTED IN SAID CASING IN POSITIONS ELECTRICALLY ISOLATED THEREFROM, MEANS IN SAID TEMPERATURE-RESPONSIVE DEVICE FOR OPERATING SAID AUTOMATIC RESET CONTACTS AUTOMATICALLY TO A CLOSED AND AN OPEN POSITION REPETITIVELY IN DEPENDENCE UPON THE TEMPERATURE WITHIN SAID KETTLE; MEANS COMPRISING A ROTATABLY MOUNTED CAM COOPERATIVE WITH SAID AUTOMATIC RESET-TYPE CONTACTS AUTOMATICALLY REDUCING THE TEMPERATURE AT WHICH SAID AUTOMATIC RESET-TYPE CONTACTS CLOSED SUBSEQUENT TO THE INITIAL OPENING THEREOF BY SAID TEMPERATURE-RESPONSIVE DEVICE, A THERMAL TIME-DELAY DEVICE MOUNTED IN SAID CASING IN A POSITION ELECTRICALLY ISOLATED THEREFROM; MANUAL RESETTYPE CONTACTS MOUNTED IN SAID CASING IN POSITIONS ELECTRICALLY ISOLATED THEREFROM AND OPERATED BY SAID THERMAL TIME-DELAY DEVICE AND CONNECTED IN SAID ELECTRICAL CIRCUIT IN SERIES WITH SAID AUTOMATIC RESET-TYPE CONTACTS; AND LATCHING MEANS MOUNTED IN SAID CASSING IN POSITIONS ELECTRICALLY ISOLATED THEREFROM FOR MANUALLY HOLDING CLOSED SAID MANUAL RESET-TYPE CONTACTS, SAID THERMAL TIME-DELAY DEVICE INCLUDING MECHANISM FOR ACTUATING SAID LATCHING MEANS TO A POSITION FOR RELEASING SAID MANUAL RESET-TYPE CONTACTS WHEN A PREDETERMINED AMOUNT OF HEAT IS STORED IN SAID KETTLE.