Laser adjusted set-point of bimetallic thermal disc

摘要

A thermal switch having a thermally, responsive bimetallic member that exhibits a snap-action response and a pair of relatively movable contacts positioned relative to the thermally responsive bimetallic member such that the thermally responsive bimetallic member is positioned to actuate one of the pair of relatively movable contacts by transitioning between one and another of the first and second stable states, the bimetallic member being a bimetallic material fabricated of two materials having different coefficients of thermal expansion and formed in a non-planar shape to achieve a snap-action between first and second stable states as a function of temperature and having an artifact formed as a localized heat-treated area in a surface of a first of the two materials and cooperating with the non-planar shape to achieve the snap-action.