Self adjustable rings of perimeter closure. (Machine-translation by Google Translate, not legally binding)

摘要

Self-adjusting rings with perimeter closure, characterized, by having a single band of rectangular section, made of thermoplastic material and molded in the shape of an open ring, opposite and inverted end shapes, each constituted by two concentric arms joined together in one of these ends by a radial section to said ring, provided on its outer side with greater non-slip ribs while the outer side on the arm of smaller radius for one of the ends of the band, and inside on the arm of greater radius on the opposite end, is covered with multiple tumbled teeth of triangular profile, with their complementary inclinations between both ends. (Machine-translation by Google Translate, not legally binding)