초록 ▼

The tamper evident closure of the present invention includes a twist cap made of plastic that comprises a top portion and an interior sealing means which coacts with the rim of the container neck to provide a gas-tight seal. The top portion also has an annular depending skirt which includes an inter

The tamper evident closure of the present invention includes a twist cap made of plastic that comprises a top portion and an interior sealing means which coacts with the rim of the container neck to provide a gas-tight seal. The top portion also has an annular depending skirt which includes an interior retaining means to coact with an exterior retaining means on the neck finish of the container. The exterior retaining means of the container has a positive stopping means to coact with interior retaining means of the cap so that when the cap is screwed onto the container neck the positive stopping means is engaged at a predetermined level of sealing force and capping torque. The depending skirt also includes locking means which lock the cap into place after the container is sealed. The locking means coacts with the positive stopping means on the container to prevent the cap from being unscrewed or twisted off the container after it has been screwed onto the container neck. The locking means are disengaged only after a tamper evident means is engaged to indicate that the container has been opened. The tamper evident means preferably comprises a hinged portion of the cap which must be lifted to open the container, thus providing an indication that the container has been opened or tampered with.

대표청구항 ▼

[ We claim:] [1.] A container-closure combination for containing a product comprising:a container comprising:(a) an opening for receiving or discharging the product;(b) a neck surrounding the opening;(c) said neck including exterior retaining means and positive stopping means;a closure comprising:(a

[ We claim:] [1.] A container-closure combination for containing a product comprising:a container comprising:(a) an opening for receiving or discharging the product;(b) a neck surrounding the opening;(c) said neck including exterior retaining means and positive stopping means;a closure comprising:(a) a top portion;(b) a depending skirt including:(i) interior retaining means which engage said exterior retaining means of the container when the closure is applied to the container thereby urging the closure onto the neck of the container;(ii) locking means which coact with the positive stopping means of said container to prevent the closure from being rotated in at least one direction and from being removed from said container after the closure is applied thereto;(c) tamper evidence means which may be engaged to indicate that the container has been opened and which disengage said locking means to allow removal of said closure from said container, said tamper evidence means comprising a hinge across the top portion of said closure.