(under subclass 1) Device wherein the heat responsive device
returns to its original shape and position when the heat of actuation is removed, and reacts cyclically upon the reapplication of heat, as distinguished from meltable elements, such as fusible links, which must be replaced after each use.
SEE OR SEARCH CLASS
160, Flexible or Portable Closure, Partition, or Panel,
6, for a nonfusible thermal initiator for the automatic control of a closure of that class.
