Abstract: An expansible bottle stopper includes a body, a resilient member, and a movable member that is longitudinally movable relative to the body. The resilient member is caused to expand radially by a first-stage longitudinal displacement of the movable member relative to the body or to shrink radially by a second-stage longitudinal displacement of the movable member relative to the body.

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: A bottle stopper for sealing and resealing a bottle neck. The bottle stopper includes a body, a plug and a jacket. The body includes legs and axially guiding grooves thereof provided on its inner circumference. The plug includes axially positioning ribs adapted to engage with the corresponding axially guiding grooves in order to increase reliability of the combined structure. A combined body and plug member is inserted into the jacket to form a bottle stopper. When the radially inner flange is engaged with the groove, the plug cannot be removed from the body. As the plug is axially pressed into the body, the radial inner flange is then disengaged with the groove, and the outer circumference of the jacket may radially expand to seal or to reseal a bottle.

Abstract: A bottle stopper for sealing and resealing bottle neck is disclosed. The present invention is the bottle stopper which mainly includes a body, a plug and a jacket. The body comprises a plurality of legs and axially guiding grooves thereof provided on its inner circumference. The plug comprises a plurality of axially positioning ribs being adapted to engage with the corresponding axially guiding grooves in order to increase reliability of structurally combining. A combined body and plug member is inserted into the jacket to form a bottle stopper. When the radially inner flange is engaged with the groove, the plug cannot be removed from the body. As the plug is axially pressed full-scale into the body and the radially inner flange is then disengaged with the groove, the outer circumference of the jacket may radially expanded to seal or to reseal a bottle neck.