초록 ▼

Easily removable press-on, pry-off closures having movable insert disks in an outer shell are disclosed. Pressing the shell upward to remove it from a container first pries a protrusion inside the shell over a snap rib around the container, then moves the shell upward relative to the disk while the

Easily removable press-on, pry-off closures having movable insert disks in an outer shell are disclosed. Pressing the shell upward to remove it from a container first pries a protrusion inside the shell over a snap rib around the container, then moves the shell upward relative to the disk while the later remains seated on the container, until a disk-lifting projection inside the shell engages the edge of the disk and lifts the disk to break the seal. A tamper evidencing band, if included, is broken before either the shell is pried off or the disk is lifted. The invention can be used in both top load and bottom load embodiments. Also disclosed is a closure with a non-movable disk or integral top and a tamper-evidencing band which is broken by pry-off removal of the closure.

대표청구항 ▼

A sealed package comprising a container and a press-on, pry-off composite closure for said container, said closure comprising: a shell having a top opening; an insert disk in said shell and having sealing means forming a seal around the mouth of said container; said shell having inwardly projecting

A sealed package comprising a container and a press-on, pry-off composite closure for said container, said closure comprising: a shell having a top opening; an insert disk in said shell and having sealing means forming a seal around the mouth of said container; said shell having inwardly projecting means below said disk for lifting said disk and for engaging beneath a rib on said container to hold said shell on said container; said disk being retained in said shell between said inwardly projecting means and a top lip above an edge of the disk; the disk being axially movable with respect to said shell between said inwardly projecting means and said lip; means other than said closure holding said insert disk in sealing engagement on said container; said shell having annular breakable tamper-evidencing means which is retained beneath an external shoulder on said container; said shell being elastically disengageable from said container by pressing the shell upwardly at a point on its circumference to pry said inwardly projecting means over said rib, such upward pressing of said shell moving said tamper-evidencing means against said shoulder and breaking said tamper-evidencing means around at least a portion of the circumference thereof, before said inwardly projecting means has been pried over said rib, said closure providing for upward movement of said shell between such breaking of said tamper-evidencing means and the point at which said inwardly projecting means has been pried over said rib, said closure providing for further upward movement of said shell between the point at which at least a portion of said inwardly projecting means has been pried over said rib and the point at which said inwardly projecting means engages and lifts said disk, such movement thereby at least partially separating in time the events of breaking said tamper-evidencing means, prying of said inwardly projecting means over said rib, and lifting said disk, such separation thereby reducing the total force required for said events and facilitating the opening of said container.