Thermal switch utilizing a housing with an opening in which a thermal element supportws a spring by a contact means

Claim 1

A THERMAL SWITCH FOR AN ELECTRICAL CIRCUIT OR THE LIKE COMPRISING A CLOSED HOUSING, BARS PROJECTING OUTWARDLY FROM OPPOSITE ENDS OF SAID HOUSING, CIRCUIT TERMINALS FIXED ON THE OUTER ENDS OF SAID BARS, A TRUNCATED OPENING IN SAID HOUSING, A FUSIBLE ELEMENT POSITIONED WITHIN SAID OPENING, A ROD WITH A RING ATTACHED INTERMEDIATE ITS ENDS SUPPORTED BY SAID FUSIBLE ELEMENT BETWEEN AND IN SPACED RELATION WITH RESPECT TO SAID BARS, SAID RING HAVING AN OUTER DIAMETER LARGER THAN THE SMALLEST DIAMETER OF THE TRUNCATED OPENING AND MOVEABLE IN A DIRECTION TOWARDS SAID SMALLEST DIAMETER, A FLAT DISC CONDUCTOR MOUNTED ON SAID ROD IN SPACED RELATION FROM SAID BARS, AND A MEANS CONNECTED TO SAID CONDUCTOR INCLUDING GENERALLY U-SHAPED SPRING MEANS URGING SAID CONDUCTOR INTO CONTACT WITH THE ENDS OF SAID BARS FOR CLOSING THE ELECTRICAL CIRCUIT TO WHICH SAID CIRCUIT CLOSER IS ATTACHED, SAID RING COOPERATING WITH SAID OPENING TO GUIDE SAID ROD THROUGH SAID OPENING TO ASSURE ELECTRICAL CONTACT BETWEEN SAID FLAT DISC AND SAID CONDUCTORS.