Patent ID: 7347322

Claim:
A cap comprising: a lower cap having an insertion part defining an adjunct receiving chamber therein, said insertion part having a bottom opening; a bottom cover covering the bottom opening of the insertion part; an upper cap removeably coupled to the lower cap, said upper cap having an inner skirt extending downward from the upper cap; a push bar extending downward from the inner skirt, said push bar having a lower end; said push bar and bottom cover formed and positioned so that with rotation of the upper cap, the push bar cuts said bottom cover to expose the bottom opening of the insertion part; said insertion part has a bottom circumferential edge surrounding the bottom opening; said bottom circumferential edge of said insertion part has a downward slope with respect to a lateral direction; said insertion part has a peak portion of the bottom circumferential edge corresponding to an upper end of the downward slope; said insertion part has a base portion of the bottom circumferential edge corresponding to a lower end of the downward slope, said bottom cover is sealed onto the bottom circumferential edge to cover the bottom opening of the insertion part; said push bar extends for a predetermined distance to the base portion of the bottom circumferential edge; wherein an outer surface of the inner skirt of the upper cap and a portion of an inner surface of the insertion part which corresponds to the outer surface of the inner skirt are coupled to each other by a positioning rib structure so that when the inner skirt and the insertion part are coupled to each other, said lower end of the push bar is placed adjacent to the base portion of the bottom circumferential edge; a rib provided on the outer surface of the inner skirt of the upper cap; a rib positioning rail provided on the lower cap at the inner surface of the insertion part at a predetermined position corresponding the rib, said rib positioning rail comprising a small protrusion on a first side thereof and a large protrusion on a second side thereof; and, wherein said rib positioning rail is constructed such that the rib of the inner skirt can cross over the small protrusion and is stopped by the large protrusion, so that, when the upper cap is rotated in a predetermined direction, a cutting process of the bottom cover of the insertion part and rotation of the lower cap for removal are sequentially performed.