CLOSURE DEVICE Russian patent published in 2023 - IPC B65D41/34 

FIELD: closure devices.

SUBSTANCE: closure devices with an opening indication element for bottles with a threaded neck. The closure cap includes a closed sleeve (1), a sealing agent, an open sleeve (3) forming a cavity (4) with the closed sleeve (1), as well as an indicator ring (5) with an annular band (6) located in the cavity (4) configured for release at the first opening and preventing the indicator ring (5) from returning to its original position when the bottle is closed again.

EFFECT: increased reliability and security of the closure cap by indicating the opening by improving the visual indication of bottle opening and strengthening the protection against its repeated misuse.

5 cl, 2 dwg