Patent ID: 9415906
Filing Date: 2016-08-16
CPC Classification: B65D

Claim Text:
1. A cap for a container body including a mouth portion having an upper potion provided with a thread, a middle portion provided with an annular bead portion, and a lower portion provided with an annular shoulder portion; the cap comprising: a cap portion configured to be screwed with the thread, the cap portion having a lower end; a ring portion serving as a tamper-evident ring configured to be connected to the lower end of the cap portion through a breakaway part, the ring portion having an elastic piece folded and anchored on the annular bead portion and having an outer peripheral surface, the ring portion being rotatably provided between the annular bead portion and the annular shoulder portion so that a rotational operation is performable on the ring portion; and a locking mechanism configured to be operated by the rotational operation to prevent the cap portion from being unintentionally unscrewed, the locking mechanism comprising a protruding portion provided on the outer peripheral surface and having an end portion forming a wedge shape; and an engaging protrusion portion provided on the cap portion and configured to be engaged with the protruding portion by the rotational operation for providing a locked state to prevent the cap portion from being unintentionally unscrewed, the engaging protrusion portion being also configured to be disengaged from the protruding portion by the rotational operation for providing an unlocked state.