Locked pressure closure system for earrings, has pressure piece comprising transverse flanges positioned facing one another to define through-hole in which cylindrical pin is to be inserted

摘要

The system comprises a cylindrical pin (2) fixed at one end to a decorative piece (1) and a pressure piece (3) comprising the transverse flanges (5) positioned facing one another to define a through-hole in which the pin is inserted. The pin includes a longitudinal segment having a non-cylindrical cross-section close to the end opposite to the decorative piece.