US3760969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container closure
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1971-09-10
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Granted: 1973-09-25
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Expires: 1991-09-10
Abstract
Abstract A container closure member adapted to sealably close an access opening of a glass bottle for solutions, which has a leg-like portion sealingly situated in the access opening. This closure member comprises a rubber covering plug formed with an annular protrusion and a shaped form of synthetic resin formed with an annular groove and firmly contacted with the covering plug with its annular groove receiving therein the annular protrusion of the covering plug. The diameter of the shaped form is smaller than that of a flange of the storage vessel, but larger than that of the access opening so that a tight contact between the closure member and the storage vessel can be advantageously ensured.
Inventors
- 👤 Y Matsukura
- 👤 O Kawahara
- 👤 T Shimamoto
- 👤 M Fujita
- 👤 M Sakagami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:00
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/14; A61J1/1406; B; B29; B29C; B29C45/00; B29C45/14; B65; B65D; B65D51/00; B65D51/002; A61J1/1468; A61M; A61M2207/00; B29C43/00; B29C43/32; B29C43/34; B29C2043/3444; B29C43/02; B29C43/18; B29L; B29L2031/00; B29L2031/56; B29L2031/565; B29L2031/753; B29L2031/7544; Y; Y10; Y10S; Y10S215/00; Y10S215/03
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
240 words
A container for medical injection solutions comprising a storage vessel with a defined access opening and a closure member, said closure member comprising a form composed of a thin film of a fluorocarbon resin and capable of sealably closing said opening and formed with an annular recessed portion adapted to be situated in said opening when said form is sealably covering said opening, a rubber covering plug pierceable by a hypodermic needle and formed with an annular protrusion adapted to be received in said annular recessed portion of said form, said annular protrusion being inwardly recessed at a position adjacent to the point at which said protrusion is integrally connected with the remainder of said covering plug, whereby a recessed annular gap can be obtained between the outer peripheral surface of said annular recessed portion and the inner surface of said vessel defining said access opening when said closure member sealably closes said opening, the maximum outside diameter of said form being smaller than that of said covering plug, but larger than the diameter of said opening, whereby the remaining annular surface of said covering plug which is defined by the difference between the diameters of said covering plug and said form directly contacts a flange of said storage vessel positioned adjacent to said opening in a tight manner, and sealing means for sealingly securing said closure member to said storage vessel and overlying the periphery of said covering plug.
Claim 2
Dependent Claim
240 words
A container for medical injection solutions comprising a storage vessel with a defined access opening and a closure member, said closure member comprising a form composed of a thin film of a fluorocarbon resin and capable of sealably closing said opening and formed with an annular recessed portion adapted to be situated in said opening when said form is sealably covering said opening, a rubber covering plug pierceable by a hypodermic needle and formed with an annular protrusion adapted to be received in said annular recessed portion of said form, said annular protrusion being inwardly recessed at a position adjacent to the point at which said protrusion is integrally connected with the remainder of said covering plug, whereby a recessed annular gap can be obtained between the outer peripheral surface of said annular recessed portion and the inner surface of said vessel defining said access opening when said closure member sealably closes said opening, the maximum outside diameter of said form being smaller than that of said covering plug, but larger than the diameter of said opening, whereby the remaining annular surface of said covering plug which is defined by the difference between the diameters of said covering plug and said form directly contacts a flange of said storage vessel positioned adjacent to said opening in a tight manner, and sealing means for sealingly securing said closure member to said storage vessel and overlying the periphery of said covering plug.
Claim 3
Dependent Claim
48 words
A container as claimed in claim 1 wherein the surface of said form which contacts said covering plug and thE surface of said plug which contacts said form are rough so that a relatively firm contact therebetween can be obtained without necessitating the use of any adhesive agent.
Claim 4
Dependent Claim
33 words
A container as claimed in claim 1 wherein said annular protrusion of said covering plug has its inside peripheral surface flared in the direction away from the access opening of the storage vessel.
Claim 5
Dependent Claim
28 words
A container as claimed in claim 7 wherein said fluorocarbon resin is selected from the group consisting of a trifluorochloroethylene polymer, a tetrafluoroethylene polymer and a tetrafluoroethylene-hexafluoropropylene copolymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |