Indicator housing for indicating a temperature has been reached or exceeded comprises a cylindrical body with an expanded opening in which wax, propellant and ink are placed

摘要

Indicator housing for optical display of a temperature threshold reached or exceeded comprises a hollow body filled with wax, propellant and ink. The hollow body comprises a housing (1) with housing bottom (2), wall (3) and opening (4). The housing has an expansion (5) in the area of the opening. An independent claim is made for a method of manufacturing an indicator housing for optical display of a reached or exceeded temperature threshold.