Patent ID: 7581653

Claim:
A threadless cap for closing a potable liquid bottle, the potable liquid bottle having a neck with an upper edge defining a discharge opening, said threadless cap comprising: a lid for overlying and sealing the discharge opening, said lid including a tension ring for retaining said cap on the neck of the bottle, said tension ring having an inwardly extending rib for engaging the neck of the bottle; a skirt depending from said lid, said skirt including a line of weakness facilitating a manual tear of said skirt, said line of weakness extending along a portion of a perimeter of said skirt, said line of weakness including a portion extending across said tension ring to reduce a retaining force exerted by said tension ring on the neck of the bottle when a line of tear propagating as a result of a manual pull applied on said skirt extends across said tension ring, said line of weakness being configured such that the line of tear propagates along the portion of the perimeter of said skirt and then propagates along the portion extending across said tension ring; and a tear stop for preventing the line of tear to propagate beyond said tear stop, said tear stop having a portion for engaging the neck of the bottle.