.~ Including means for withstanding or dissipating thermally induced stress (e.g., expansion joint) {2}
560.06
.~.~ Expansible pleat, fold, corrugation, etc.
DEFINITION
Classification: 220/560.06
Expansible pleat, fold, corrugation, etc.:
(under subclass 560.05) Subject matter wherein the structural feature or modification includes a portion of container material that has an undulation or is doubled over or folded upon itself but which can be unfolded or extended to allow
for a thermally induced increase in at least one of the dimensions of the container material.