UNITED PLASTIC SNAP-FIT CLOSURE (VARIANTS) Russian patent published in 2004 - IPC

FIELD: closure means, particularly tamper-evident closures demonstrating unauthorized opening of transport or storage container.

SUBSTANCE: snap-fit closure 20 to demonstrate attempts to unauthorized container 42 closure unit opening includes end part, removable skirt 22 and a number of frangible members 23 connecting removable skirt 22 with closure 21. Container closure unit includes fitting 43 provided with inner thread and plug 39 with outer thread installed in fitting 43. End closure 21 part includes pendent side wall ended with snapping extension part. Removable skirt 22 has wall 29, 30 arranged near upper container part when closure is snapped on closure unit. When end closure 21 part is snap-fitted on closure unit extension part engages corresponding edge of closure unit. To provide access to closure edge for its taking off from closure unit user have to remove skirt 22.

EFFECT: increased efficiency, prevention of closure self-opening.

29 cl, 11 dwg