Improvements in the manufacture of armed elastic tubular bodies. (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for reinforcing of synthetic material tubes (certificate of addition of patent n 422359). Consists of the placement of a second armor constituted at the base of threads and ribbons (10) of textile nature, longitudinally and exteriorly provided with respect to the first one, so that it is not affected by the helicos (2) and (4) deforms, constituting the generators of an ideal cylinder, providing a uniform finish of the surface and an increase of the mechanical resistance. (Machine-translation by Google Translate, not legally binding)