Flexible stopper perfected (Machine-translation by Google Translate, not legally binding)

摘要

Improved flexible plug constituted by a cylindrical body or conical trunk, characterized by being made of flexible materials, and equipped with three alternately arranged recesses, that is to form a continuous wall that, despite its changes of direction, does not offer possibility some to the passage of gases or liquids that are separated by the same, for whose purpose said recesses are arranged according to alignments parallel to a diametral axis, leaving two of them with sufficient amplitude and depth to allow digital action on their vertical faces and thus receive a sufficient pressure to produce a momentary deformation of the contour of the cap and through which the introduction and removal of said cap to the neck of the bottle to which it is attached is facilitated. (Machine-translation by Google Translate, not legally binding)