Tamper indicating plastic closure

Details Tamper indicating plastic closure Tamper indicating plastic closure

1992-10-14

1994-10-18

Shoap, Allan N.

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

053560191

ABSTRACT:
A plastic tamper-indicating closure (1) possesses a closure cap (2) on which, by means of weakened web portions (5), a tamper-indicating band (6) is fixed. The tamper-indicating band (6) is provided with a number of blocking elements (8). The blocking elements (8) are connected with the tamper-indicating band via integral hinges (7). During screwing onto the container neck, the blocking elements (8) can be pivoted upwards and radially outwards into a first closed position (I). As opposed to this, during opening of the tamper-indicating closure the blocking elements are pivoted downwards and radially inwards into a second opening position (II). With that, the effective internal diameter will be reduced, by which means the blocking element will be held in engagement with the corresponding locking surface on a container neck.

REFERENCES:
patent: 4488655 (1984-12-01), Itsubo et al.
patent: 4635808 (1987-01-01), Nolan
patent: 4694971 (1987-09-01), Elsmo et al.
patent: 4726482 (1988-02-01), Barriac
patent: 4784280 (1988-11-01), Breuer et al.
patent: 4813561 (1989-03-01), Ochs
patent: 4938370 (1990-07-01), McBride
patent: 4978017 (1990-12-01), McBride
patent: 5090788 (1992-02-01), Ingram et al.
patent: 5107998 (1992-04-01), Zumbuhl
patent: 5167335 (1992-12-01), McBride et al.

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