초록 ▼

A snap-on plastic closure for a container includes a top wall portion, an annular skirt portion depending from the top wall portion, and a removal tab projecting forwardly from the skirt portion for manipulation of the closure during removal. A sealing plug depends from the inside surface of the top

A snap-on plastic closure for a container includes a top wall portion, an annular skirt portion depending from the top wall portion, and a removal tab projecting forwardly from the skirt portion for manipulation of the closure during removal. A sealing plug depends from the inside surface of the top wall portion for disposition generally within the mouth of an associated container. The skirt portion of the closure includes a deformable region positioned beneath the removal tab so that during closure removal, the deformable region is permanently stretched and deformed for tamper-indication.

대표청구항 ▼

What is claimed is: 1. A snap-on closure for a container comprising: a top wall portion; an annular skirt portion depending from said top wall portion; a removal tab projecting forwardly from said-skirt portion, said skirt portion including a deformable portion positioned adjacent to said removal

What is claimed is: 1. A snap-on closure for a container comprising: a top wall portion; an annular skirt portion depending from said top wall portion; a removal tab projecting forwardly from said-skirt portion, said skirt portion including a deformable portion positioned adjacent to said removal tab, and comprising a pair of weakened regions on respective opposite sides of said removal tab; a sealing plug depending from an inside surface of said top wall portion for disposition generally within a mouth of an associated container; and a sealing liner disposed on said sealing plug for sealing engagement with said container; wherein said sealing liner is molded in situ and is coextensive with and conforms to inwardly and outwardly facing surfaces of said sealing plug, and includes a central portion positioned generally within said sealing plug adjacent said top wall portion. 2. A snap-on closure in accordance with claim 1, wherein: one of said sealing plug and said sealing liner defines an annular retention lip, and the other of said sealing plug and said sealing liner defines an annular retention groove for receiving said retention lip. 3. A snap-on closure in accordance with claim 1, wherein: said annular skirt portion includes said deformable region positioned generally beneath said removal tab. 4. A snap-on closure in accordance with claim 3, wherein: said annular skirt portion defines a gap extending above said deformable region. 5. A snap-on closure in accordance with claim 4, wherein: said annular skirt portion includes a bridge element positioned at said gap for bearing axial loads during application of said closure to said associated container. 6. A snap-on closure in accordance with claim 5, wherein: said bridge element is positioned on said annular skirt portion above said deformable region. 7. A snap-on closure in accordance with claim 3, wherein: said annular skirt portion includes a plurality of inwardly projecting, circumferentially spaced retention beads, said deformable region of said skirt portion including one of said retention beads. 8. A snap-on closure in accordance with claim 7, including: an elongated one of said retention beads on said annular skirt portion opposite said removal tab, said elongated retention bead comprising an opening positioned diametrically opposite said removal tab. 9. A snap-on closure in accordance with claim 1, wherein: said annular skirt portion includes at least one inwardly projecting retention bead for retaining said closure on said container. 10. A snap-on closure for a container, comprising: a top wall portion; an annular skirt portion depending from said top wall portion; said skirt portion including at least one inwardly projecting retention bead; a removal tab projecting from said skirt portion, said annular skirt portion comprising a pair of weakened regions positioned on respective opposite sides of said removal tab; a sealing plug depending from an inside surface of said top wall portion for disposition generally within a mouth of an associated container; and a sealing liner disposed on said sealing plug, said sealing liner being coextensive with and conforming to inwardly and outwardly facing surfaces of said sealing plug. 11. A snap-on closure in accordance with claim 10, wherein: one of said outwardly facing surface of said sealing plug and said inwardly facing surface of said sealing liner includes an annular retention lip, and the other of said outwardly facing surface of said sealing plug and said inwardly facing surface of said sealing liner comprises an annular retention groove for receiving said retention lip. 12. A snap-on closure in accordance with claim 11, wherein: said outwardly facing surface of said sealing plug defines said retention groove, said inwardly facing surface of said sealing liner including said retention lip. 13. A snap-on closure in accordance with claim 11, wherein: said skirt portion includes a deformable region positioned generally beneath said removal tab, said skirt portion including a plurality of said retention beads arranged in circumferentially spaced relationship, one of said retention beads being positioned on said deformable region. 14. A snap-on closure in accordance with claim 10, wherein: said inwardly facing surface of said sealing liner defines an annular channel within which is positioned a free edge of said sealing plug. 15. A snap-on closure in accordance with claim 10, wherein: said sealing liner includes an outwardly facing annular seal bead generally adjacent a free edge of said sealing plug. 16. A snap-on closure for a container, comprising: a top wall portion; an annular skirt portion depending from said top wall portion, said skirt portion including a plurality of inwardly projecting; circumferentially spaced retention beads; a removal tab projecting forwardly from said skirt portion, said annular skirt portion including a deformable region positioned adjacent to said removal tab, with one of said retention beads being positioned on said deformable region, said skirt portion comprising a pair of weakened regions positioned on respective opposite sides of said removal tab and said deformable region; an annular sealing plug depending from an inside surface of said top wall portion; and a sealing liner disposed on an outwardly facing surface of said sealing plug for sealing engagement with an inwardly facing surface of said container, whereby during closure removal, upward manipulation of said removal tab deforms said deformable region of said annular skirt portion for disengagement of said one of said retention beads positioned thereon, said weakened regions facilitating flexure of said closure, said sealing plug and said sealing liner sliding upwardly during closure removal. 17. A snap-on closure in accordance with claim 16, wherein: said closure defines a flexure region extending across said top wall portion. 18. A snap-on closure in accordance with claim 17, wherein: said flexure region is positioned generally between the center of said top wall portion and said removal tab. 19. A snap-on closure in accordance with claim 16, said sealing liner defining an annular channel for receiving a free edge of said sealing plug, and including a central portion positioned generally within said sealing plug. 20. A snap-on closure in accordance with claim 16, wherein: said sealing liner is coextensive with said sealing plug. 21. A snap-on closure for a container, comprising: a top wall portion; an annular skirt portion depending from said top wall portion, said skirt portion including a plurality or inwardly projecting, circumferentially spaced retention beads; a removal tab projecting forward from said skirt portion; said skirt portion including a deformable region positioned adjacent to said removal tab, with one of said retention beads being positioned on said deformable region, said skirt portion comprising a pair of weakened regions positioned on respective opposite sides of said removal tab and said deformable region; an annular sealing plug depending from an inside surface of said top wall portion; and a sealing liner disposed on said sealing plug, whereby during closure removal, manipulation of said removal tab deforms said deformable region for disengagement of said one of said retention beads positioned thereon, said weakened regions facilitating flexure of said closure, said sealing plug and said sealing liner sliding upwardly during closure removal, wherein said skirt portion includes an elongated one of said retention beads positioned opposite said removal tab, said elongated retention bead circumferentially extending about 180째 of said skirt portion. 22. A snap-on closure in accordance with claim 21, wherein: said elongated retention bead comprises an opening positioned diametrically opposite said removal tab.