Closure having well with removable membrane

A closure for use with a container neck including a crown having an outwardly extending locking bead, a reduced diameter portion below the crown, a downward facing shoulder defined by the intersection of the locking bead and the reduced-diameter portion, the closure comprising:

• a top;
• a skirt depending from a peripheral portion of said top and adapted to fit around said crown and said enlarged diameter portion of said neck;
• and
• a retainer adapted to engage said downward facing shoulder, said retainer including an inwardly and upwardly extending retainer member adapted for engaging the downward facing shoulder of the neck, and a hinge connecting said flap to an internal surface of said skirt.

In combination, a closure and a neck for a container,

• said neck comprising
• a crown defining an opening and an outwardly extending locking bead,
• a reduced diameter portion below said crown,
• a downward facing shoulder defined by the intersection of said locking bead and said reduced-diameter portion, and
• an enlarged diameter portion below said reduced diameter portion,
• said closure comprising
• a cap having a top,
• a skirt depending from a peripheral portion of said top and adapted to fit around said crown and said enlarged diameter portion of said neck,
• a well including an upper side wall depending from a central portion of said top, an inwardly directed, inwardly extending shoulder located adjacent a bottom of said upper wall, a lower side wall depending from said inwardly directed shoulder, said upper side wall and said inwardly directed shoulder forming a recess, said lower side wall having an interior surface and said lower side wall terminating at an open bottom of said well,
• a frangible membrane in said well closing off said well, said frangible membrane including a line of weakness frangibly connecting said frangible membrane to said lower side wall adjacent said inwardly directed shoulder,
• a pull ring attached to an upper surface of said frangible membrane, said pull positioned within said recess and substantially below said top,
• a retainer adapted to engage said downward facing shoulder, said retainer including an inwardly and upwardly extending retainer flap engaging said a downward facing shoulder of said neck, and a hinge connecting said flap to an internal surface of said skirt.