Closure assembly
A closure assembly comprising a two-part closure having a metal panel or disc ( 2 ) and a ring ( 3 ), and a container such as a glass jar ( 20 ). The ring ( 3 ) is substantially cylindrical with an axially upwardly extending sidewall and has a radially inwardly extending lower edge. The jar ( 20 ) terminates in a radially outwardly extending beaded rim ( 16 ) and the disc ( 2 ) has a curled circumference ( 8 ) such that this curl ( 8 ) co-operates with the beaded rim ( 16 ) of the container to provide a primary seal. In one example, in a metal ring ( 3 ), the lower edge is curled with equally spaced lugs ( 13 ) on the skirt wall. In a plastic ring, the upper rim feature may be omitted.
1. A container and two-part closure combination, the combination comprising:
a container having a neck about which a screw thread is disposed; and
a two-part closure, the two-part closure comprising:
a disc having a center panel, a shoulder disposed about the center panel, and a feature extending from the shoulder, the feature configured to engage with the neck of the container in a snap-fit relationship; and
a ring disposed about the disc, the ring having a projection that extends radially inwardly, the projection having a bottom surface and a top surface opposite the bottom surface, the bottom surface configured to engage the screw thread and the top surface configured to engage the feature so as to release the disc from the neck of the container.
2. The container and two-part closure combination of claim 1 , wherein the feature is a skirt that depends downwardly from the shoulder, the skirt including a curl at its bottom end.
3. The container and two-part closure combination of claim 2 , wherein the container neck defines an open top end and the container neck has a bead that extends radially outwardly from the open top end, the bead defining a first diameter, and wherein the feature has an inner surface that defines a second diameter that is less than a first diameter.
4. The container and two-part closure combination of claim 2 , wherein the projection extends from a bottom portion of the ring.
5. The container and two-part closure combination of claim 4 , wherein the ring further having an upper portion extending upwardly from the bottom portion about the disc, wherein the upper portion is spaced away from the disc.
6. The container and two-part closure combination of claim 2 , wherein the projection is a first projection that extends from a top portion of the ring and the ring further includes a second projection that extends from a bottom portion of the ring.
7. The container and two-part closure combination of claim 2 , wherein the projection is discontinuous about a circumference of the disc.
8. The container and two-part closure combination of claim 2 , wherein the curl is curled radially inwardly.
9. The container and two-part closure combination of claim 2 , wherein the disc is metal and the ring is plastic.