Abstract: A bottle stopper mainly includes a body, a plug and a jacket. The body has an expansion spread by the plug and outwardly confronting with the jacket. The plug comprises two necks for two different engagements alternatively engaged with the body to provide a locking means and a resealing means for bottle neck. The body is structurally retained between the plug and the jacket being assembled as a unit to form the bottle stopper. When the bottle stopper is initially inserted into a bottle neck and pressed to position at the first engagement, the locking means provides a maximum expansion to lock around the bottle neck. And it has an appearance and a function of indicating whether the bottle neck has previously opened or the stopper has been used. When the bottle stopper is pressed downward positioning at the second engagement, the resealing means provides a slightly expansion for allowing to initially release and reseal the bottle neck.

Abstract: The present invention is the bottle stopper which mainly includes a body, a plug and a jacket. The body has an expansion spread by the plug and outwardly confronting with the jacket. The plug comprises two necks for two different engagements alternatively engaged with the body to provide a locking means and a resealing means for bottle neck. The body is structurally retained between the plug and the jacket being assembled as a unit to form the bottle, stopper. When the bottle stopper is initially inserted into a bottle neck and pressed to position at the first engagement, the locking means provides a maximum expansion to lock around the bottle neck. And it has an appearance and a function of indicating whether the bottle neck has previously opened or the stopper has been used. When the bottle stopper is pressed downward positioning at the second engagement, the resealing means provides a slightly expansion for allowing to initially release and reseal the bottle neck.

Abstract: A bottle plug having a body, a plug and an elastomer member. The body defines a space having an inner circumference that forms a retracted surface that projects inwardly with respect to an axis of the body to define an expansion portion. The plug includes a leg adapted to engage the retracted surface of the body. The elastomer member is configured to receive the combination of the body and plug and further includes an outer circumference which is arranged to be received by a bottle neck. Insertion of the plug into the expansion portion urges the outer circumference of the elastomer member to expand radially to thereby seal the inner circumference of the bottle neck.