Snap-action switch with bracket for preloading blade and temperature compensation means

Claim 1

AN ELECTRICAL SWITCH FOR USE OVER A WIDE RANGE OF AMBIENT TEMPERATURES OF OVER 500 DEGREES F. COMPRISING A ONE-PIECE BODY FORMED OF CERAMIC MATERIAL TO HAVE AT LEAST ONE FACE WITH HOLES EXTENDING THROUGH SAID BODY AND OPEN AT THE FACE, A PLURALITY OF METAL POSTS WITH EACH POST HAVING A LEAD WIRE EXTENDING THREFROM, MEANS SE CURING EACH POST ONLY ON SAID FACE TO HAVE ITS LEAD WIRE AXIALLY ALIGNED WITH AND EXTEND THROUGH A HOLE WITH THERE BEING ONE POST ALIGNED WITH ONE HOLE, SAID SECURING MEANS INCLUDING A METALLIC COATING FORMED ON SAID FACE ADJACENT SAID HOLE AND A HARDENED METALLIC MATERIAL FUSED TO SAID POST AND COATING, A FIRST CONTACT MEANS SUPPORTED ON ONE POST, A SECOND CONTACT MEANS SUPPORTED ON ANOTHER POST, A SPRING CONTACT BLADE SUPPORTED ON A THIRD POST AND HAVING A CONTACT BLADE SUPPORTED ON A THIRD POST FIRST CONTACT MEANS AND BE ACTUATED BY A PREDETERMINED MOVEMENT TO BE DISENGAGED FROM THE FIRST CONTACT MEANS AND ENGAGE THE SECOND CONTACT MEANS, EACH OF SAID LEAD WIRES BEING SMALLER THAN ITS ASSOCIATED HOLE TO THEREBY BE FREE OF THE CERAMIC MATERIAL FOR SUBSTANTIALLY THE LENGTH OF SAID HOLE AND IN WHICH THE METALLIC MATERIAL OF WHICH THE POSTS ARE FORMED HAS A TEMPERATURE COEFFICIENT OF EXPANSION SIMILAR TO THE TEMPERATURE COEFFICIENT OF EXPANSION OF THE MATERIAL OF THE BODY.