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AssigneesTaisei Kako Co., Ltd., Menicon Co., Ltd.
InventorsMasaharu Nakao, Yukihiro Ogawa, Atsuhiro Doke, Yasuhiro Yokoyama, Seiichi Ichikawa
Estimating the term…
To develop a combination vessel capable of carrying out temporary fastening while always bringing down a ring portion subsequently to breakage of a bridge part during opening. A cap portion (11) and a ring portion (12) in a cap type sealing tool (1) are coupled to each other through a bridge part (13). Through breakage of the bridge part during opening, the ring portion is pulled down while a sliding protrusion (12uc) on an internal wall in a lower stage area of the ring portion always interposes an upward spread zone (2nx) on an external wall of a neck zone of a bottle portion (2) by pressure. In addition, a vertical convex to block the opening turn (12rc) provided on an inner periphery of the ring portion and a vertical convex (2rc) to block opening turn provided on the external wall (2rz) of the neck zone of the bottle portion do not block attachment of the cap type sealing tool (1) but blocks accompanied rotation of the ring portion during the opening of the cap portion, thereby breaking the bridge part. At least one higher vertical convex (2rcT) is provided in the convexes (2rc). Consequently, it is possible to prevent the ring portion from an erratic opening. Furthermore, the bridge part is not broken during the temporary mounting of the cap type sealing tool and subsequent opening.
A combination vessel comprising a cap type sealing tool formed by a cap portion having a bottomed cylindrical part and a ring portion coupled to a lower end surface of the cap portion to be easily cut off, and a bottle portion having a bottomed cylindrical part including an upward spread zone provided on an external wall of a neck zone, wherein at least two bridge parts are coupled to easily break a gap positioned between the lower end surface of the cap portion and an upper surface of the ring portion, when mutual turn is carried out in a direction to close a cap portion with such a relationship as a convex to block an opening turn of a cap portion provided inward from an internal wall of the ring portion and a vertical convex to block an opening turn of the cap portion provided outward from an external wall of the bottle portion can be engaged with each other, at least one convex to block an opening turn of the cap portion provided on the external wall of the bottle portion is a higher vertical convex, and the ring portion is pulled down while a sliding protrusion provided on an internal wall in a lower stage area of the ring portion always interposes, by pressure, an upward spread zone of the neck zone of the bottle portion simultaneously with or subsequently to breakage of the bridge part coupling the lower end surface of the cap portion to the upper surface of the ring portion.
Dependencies are inferred from the claim text.