A structure of suitcase, sack, bag or similar container with perimetrical ribbing -like pneumatic stiffening.

摘要

A suitcase structure, sack, bag or similar container, which has along at least part of its periphery, longitudinal side-by-side air tubes (3X,5X,7X,9X) which by inner pressure stiffen the container periphery without practically increasing its weight and which also give protection against shocks.