Crown caps for drug containers
AssigneeTaisei Kako Co., Ltd.
InventorsHirotaka Nishida, Kouiti Yoshimi, Keiji Hamamoto
Life of this patent
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Abstract
A rubber gasket is closely sealed by integrally connecting a removable close-fastening ring to a top board of a crown-like member to be fitted to a mouth portion in which a liquid drug is kept and pulling down the close-fastening ring to cover the outer periphery of the crown-like member.
Claims11
A crown cap which comprises a close-fastening ring integrally separably formed on an upper portion of a crown/member comprising a cylindrical body which is fitted to a mouth portion of a container while surrounding a periphery of the mouth portion and having a diameter slightly greater than that of the crown/member and which is used in such a manner that a close-fastening ring is detached from the crown/member and put on an outer periphery of the crown/member by pressing the ring towards a side of the crown/member to thus closely fit the crown/member to the mouth portion of the container,
- wherein an opening is preliminarily formed through a top board of the crown/member, a removable closing body is fitted to the opening, the opening is exposed on the top board of the crown/member by disconnecting the closing body, and a plurality of projections for welding are formed on a lower surface of the closing body and the closing body is welded, through the projections, to the board of the crown/member at a strength ranging from 0.5 to 3 kgf as expressed in terms of an overall tensile strength.
A crown cap which comprises a close-fastening ring integrally separably formed on an upper portion of a crown/member which is fitted to a mouth portion of a container while surrounding a periphery of the mouth portion and having a diameter slightly greater than that of the crown/member and which is used in such a manner that the close-fastening ring is detached from the crown/member and put on an outer periphery of the crown/member by pressing the ring towards a side of the crown/member to thus closely fit the crown/member to the mouth portion of the container,
- wherein a rubber gasket seals an opening of the mouth portion;
- fixing means are disposed between the crown/member and the rubber gasket for preventing separation of the rubber gasket from the mouth portion,
- and a plurality of projections for welding are formed on a lower surface of the closing body and the closing body is welded, through the projections, to a top board of the crown/member at a strength ranging from 0.5 to 3 kgf as expressed in terms of an overall tensile strength, the overall basal area of the plurality of the projections for welding ranging from 0.4 to 2 mm.sup.2.
Dependencies are inferred from the claim text.