IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0985750
(2001-11-06)
|
우선권정보 |
AU-198808846 (1988-06-17) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Closures and Packaging Services Limited
|
대리인 / 주소 |
McDermott Will & Emery LLP
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
56 |
초록
▼
A plastic closure for sealing a container, the closure having a top portion and a skirt portion depending from the top portion. The closure has an annular sealing rib which extends within the cavity defined by the top portion and the skirt portion. The rib includes a first portion having a substanti
A plastic closure for sealing a container, the closure having a top portion and a skirt portion depending from the top portion. The closure has an annular sealing rib which extends within the cavity defined by the top portion and the skirt portion. The rib includes a first portion having a substantially cylindrical inner surface extending away from the underside of the top portion and disposed radially inward of the skirt and a second, frusto-conical, portion contiguous with the end of the first portion distal to the underside of the top portion and extending radially inwardly and terminating in a circular free edge, such that during engagement of the cap with the neck of the container, the second, frusto-conical, portion will be engaged by the free end of the neck and folded back against the first portion of the rib to form a gas-tight seal between the neck of the container and the closure.
대표청구항
▼
1. A container having a neck finish sealed by a closure, the neck finish comprising an inner surface, an outer surface opposed to the inner surface and a free end bridging the inner surface and the outer surface of the neck finish, the closure being molded from a resilient plastics material and comp
1. A container having a neck finish sealed by a closure, the neck finish comprising an inner surface, an outer surface opposed to the inner surface and a free end bridging the inner surface and the outer surface of the neck finish, the closure being molded from a resilient plastics material and comprising a top portion and a skirt portion depending from the top portion, an annular sealing rib projecting downwardly from an underside of the top portion, said rib including a first portion which is contiguous with the top portion and having a substantially cylindrical inner surface, which inner surface lies radially inwardly of the skirt portion, and a second, frusto-conica portion contiguous with an end of the first portion distal to the top portion and extending radially inwardly to terminate in a circular free edge, the first portion having an internal diameter equal to or greater than the external diameter of the neck finish of the container so that during engagement of the closure with the neck finish, the second, frusto-conical portion will be engaged by said free end of the neck finish and folded back toward the substantially cylindrical inner surface of the first portion of the rib to form a seal between at least said outer surface of the neck finish of the container and the closure. 2. The container of claim 1, wherein the container is a carbonated beverage container. 3. The container of claim 1, wherein the container is formed from a plastic material. 4. The container of claim 1, wherein the container is formed from glass. 5. The container of claim 1, wherein the neck finish of the container has a screw thread adapted to engage with a complementary screw thread on the skirt portion of the closure. 6. A container having a neck finish sealed by a closure, the neck finish comprising an inner surface, an outer surface opposed to the inner surface and a free end bridging the inner surface and the outer surface of the neck finish, the closure being molded from a resilient plastics material and comprising a top portion and a skirt portion depending from the top portion, an annular sealing rib projecting downwardly from an underside of the top portion, said rib including a first portion which is contiguous with the top portion and having a substantially cylindrical inner surface, which inner surface lies radially inwardly of the skirt portion, and a second, frusto-conical portion contiguous with an end of the first portion distal to the top portion and extending radially inwardly to terminate in a circular free edge, the first portion having an internal diameter equal to or greater than the external diameter of the neck finish of the container so that during engagement of the closure with the neck finish, the second, frusto-conical portion will be deformed by being bent toward the top portion to form a seal between at least said outer surface of the neck finish of the container and the closure. 7. The container of claim 3, wherein said plastic material is polyethylene terephthalate (PET).
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