Flip-Top Closure And Package

Abstract

A flip-top closure includes first and second closure portions. The first closure portion includes a top wall portion with a tamper-evident winged section and a middle section, which are connected via a frangible connection. The winged section forms an undercut. The top wall portion includes a drivable structure to assist in threading the flip-top closure into a container. The second closure portion includes an annular skirt portion and a ledge. The annular skirt portion forms an external thread formation. The ledge includes at least one locking protrusion. A hinge connects the first and second closure portions. In an initially closed position, the undercut of the winged section corresponds with and lockingly engages with the locking protrusion. During movement of the hinge from the initially closed position to an open position, the frangible connection breaks leaving the winged section being lockingly engaged with the locking protrusion.

1 - 19 . (canceled) 
     
     
         20 . A tamper-evident, snap-on, flip-top closure, the closure comprising:
 a first closure portion including a polymeric top wall portion, the polymeric top wall portion including at least one tamper-evident wing, the at least one tamper-evident wing is detachably connected to a remainder of the polymeric top wall portion via a frangible connection, the at least one tamper-evident wing forming an undercut,   a second closure portion including a polymeric top wall portion and a polymeric annular skirt portion encompassing and extending from the polymeric top wall portion of the second closure portion, the polymeric top wall portion of the second closure portion forming at least one locking recess that includes an undercut, the at least one locking recess being sized and configured to receive the at least one tamper-evident wing thereon,   a hinge connecting the first closure portion and the second closure portion,   wherein in an initially closed position of the snap-on, flip-top closure, the undercut of the at least one tamper-evident wing corresponds with and lockingly engages with the at least one locking recess,   wherein during movement of the hinge from the initially closed position to an open position, the frangible connection breaks leaving the at least one tamper-evident wing being lockingly engaged with the at least one locking recess.   
     
     
         21 . A package comprising:
 a container having a neck portion defining an opening, the neck portion having an exterior surface and an interior surface, the interior surface of the neck portion including an internal thread formation; and   a flip-top closure being configured for fitment into the neck portion of the container for closing the opening of the container, the flip-top closure including a first closure portion, a second closure portion, and a hinge, the first closure portion including a polymeric top wall portion, the polymeric top wall portion including at least one tamper-evident wing, the at least one tamper-evident wing is detachably connected to a remainder of the polymeric top wall portion via a frangible connection, the at least one tamper-evident wing forming an undercut, the second closure portion including a polymeric top wall portion and a polymeric annular skirt portion encompassing and extending from the polymeric top wall portion of the second closure portion, the polymeric top wall portion of the second closure portion forming at least one locking recess that includes an undercut, the at least one locking recess being sized and configured to receive the at least one tamper-evident wing thereon, the hinge connecting the first closure portion and the second closure portion,   wherein in an initially closed position of the snap-on, flip-top closure, the undercut of the at least one tamper-evident wing corresponds with and lockingly engages with the at least one locking recess,   wherein during movement of the hinge from the initially closed position to an open position, the frangible connection breaks leaving the at least one tamper-evident wing being lockingly engaged with the at least one locking recess.   
     
     
         22 . The flip-top closure of  claim 20 , wherein the at least one tamper-evident wing is two tamper-evident wings and wherein the at least one locking recess is two locking recesses, wherein in the initially closed position of the snap-on, flip-top closure, each of the undercuts of the two tamper-evident wings corresponds with and lockingly engages with a respective one of the two locking recesses, and wherein during movement of the hinge from the initially closed position to an open position, the frangible connection breaks leaving each of the two tamper-evident wings being lockingly engaged with a respective one of the two locking recesses. 
     
     
         23 . The flip-top closure of  claim 20 , wherein the second closure portion further includes a contoured area to assist in grasping the first closure portion for movement from the closed position to the open position. 
     
     
         24 . The package of  claim 21 , wherein the at least one tamper-evident wing is two tamper-evident wings and wherein the at least one locking recess is two locking recesses, wherein in the initially closed position of the snap-on, flip-top closure, each of the undercuts of the two tamper-evident wings corresponds with and lockingly engages with a respective one of the two locking recesses, and wherein during movement of the hinge from the initially closed position to an open position, the frangible connection breaks leaving each of the two tamper-evident wings being lockingly engaged with a respective one of the two locking recesses. 
     
     
         25 . The package of  claim 21 , wherein the second closure portion further includes a contoured area to assist in grasping the first closure portion for movement from the closed position to the open position.