Patent ID: 8245364

Claim:
A closure mechanism comprising: a first closure element including (i) a first base, (ii) a first interlocking member projecting inwardly from an internal side of the first base, (iii) a projection that extends from the internal side of the first base, (iv) a retention member that extends opposite to the first projection from an external side of the first base, and (v) a first sealing flange that extends downwardly from the first base below the first projection; a second closure element including (i) a second base, (ii) a second interlocking member projecting inwardly from an internal side of the second base in opposing relation to the first interlocking member, and (iii) a second sealing flange that extends downwardly from the second base; and a slider disposed over the first and second closure elements for occluding and deoccluding the first and second closure elements, the slider including (i) first and second sidewalls depending downwardly from a top wall, and (ii) a shoulder extending inwardly from a distal end of the first sidewall and disposed below the retention member, wherein a first horizontal distance d 1 is the smallest horizontally measured distance between the slider and the first closure element, a second horizontal distance d 2 is the smallest horizontally measured distance between the slider and the second closure element, a third horizontal distance d 3 is a horizontally measured distance between the projection and the second closure element when the first and second interlocking members are in an interlocked state, and the sum of the distances d 1 , d 2 , and d 3 equals a total non-zero distance d t that is less than a length that the shoulder inwardly extends from the first sidewall, so as to inhibit the slider from disengaging from the first and second closure elements.