Tamper evident, child-resistant closure

Details Tamper evident, child-resistant closure Tamper evident, child-resistant closure

B - Operations, Transporting

65

D

B65D 50/04 (2006.01) B29C 37/00 (2006.01) B29C 45/44 (2006.01) B65D 41/32 (2006.01) B65D 41/34 (2006.01)

Patent

CA 2185976

A child-resistant, tamper-evident closure for sealing an open-topped container having an external thread formed on a neck finish includes a combination of inner and outer caps where the inner cap includes a tamper-evident band which is connected to the remainder of the inner cap by a series of frangible elements. The inner cap further includes a series of folded ratchet-like tabs which are in a locked position behind an annular bead. The tabs are arranged so as to engage an annular lip on the neck finish. The outer cap snaps over the inner cap and includes a series of ratchet teeth which are directed toward the inner cap. The top surface of the inner cap includes a series of depressions which are sized and arranged for engagement with the series of ratchet teeth. The child-resistant arrangement permits the outer cap to turn relative to the inner cap in a counterclockwise direction. In the clockwise direction, the ratchet teeth and depressions are in engagement such that turning of the outer cap will advance the inner cap into threaded engagement. Removal of the inner cap from the neck finish is achieved by ovalizing the outer cap so as to bring into engagement ribs on the inner cap with ribs on the inside surface of the sidewall of the outer cap. By means of rib engagement and frictional interference, the outer cap is used to remove the inner cap.

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