Patent ID: 7626484

Claim:
A thermal switch comprising: a case having a substantially planar internal surface; a header assembly located in the housing, the header assembly having terminals and a striker pin coupled to an actuator spring; a spacer device closely received in and located within the case; a bimetallic disc located in the case and deflectable between a first deflected state and a second deflected state based on whether a temperature of the disc is within a range of a desired set point temperature for the thermal switch, wherein in the first deflected state the bimetallic disc is in contact with the striker pin and in the second deflected state the bimetallic disc is out of contact with the striker pin; a disc seat have a substantially planar body made from a first material, wherein at least a portion of the body includes a wear resistant substance formed from a second material, the disc seat arranged in the case between the bimetallic disc and the substantially planar internal surface of the case such that the portion having the wear resistant substance is in contact with the bimetallic disc when the bimetallic disc is in the second deflected state.