초록 ▼

A closure for a container having a two portion sealing rib projecting downwardly form the underside of the top. The first portion of the rib being contiguous with the top and the second portion being frusto-conical and contiguous with the end of the first portion and extending radially inwardly to t

A closure for a container having a two portion sealing rib projecting downwardly form the underside of the top. The first portion of the rib being contiguous with the top and the second portion being frusto-conical and contiguous with the end of the first portion and extending radially inwardly to terminate in a circular free edge. The upper surface of the second portion has an engagement means comprising a continuous annular ridge which engages with the underside of the top of the closure which in turn has a continuous annular ridge positioned inwardly and adjacent the first portion of the sealing rib. A closure for a carbonated liquid container having a sealing means which has attached thereto an abutment which will firmly engage with the thread on a neck of container if the closure is over-torqued thereby preventing missiling of the closure off the container.

대표청구항 ▼

[ I claim:] [1.] A closure for a neck of a container, the closure being molded from a resilient synthetic plastic material and comprising a top and a skirt depending from an underside of the top, which skirt has an internal surface with a means for attachment with the neck of the container, and an a

[ I claim:] [1.] A closure for a neck of a container, the closure being molded from a resilient synthetic plastic material and comprising a top and a skirt depending from an underside of the top, which skirt has an internal surface with a means for attachment with the neck of the container, and an annular sealing rib projecting downwardly from the underside of the top of the closure, the rib including a first portion having a substantially cylindrical inner surface, the first portion being contiguous with the top and lying adjacent to the skirt and a second, frusto-conical, portion contiguous with an end of the first portion distal to the top, having an upper surface, and extending radially inwardly to terminate in a circular free edge, the first portion having an internal diameter suitable for receiving the external diameter of the neck of the container to which the closure is to be attached such that during attachment of the closure with the neck, the second, frusto-conical, portion of the rib will be engaged by a free end of the neck and folded back towards the substantially cylindrical inner surface of the first portion of the rib to form a gas-tight seal between at least an outer surface of the neck of the container and the closure, the closure being characterized in that there is a first annular ridge formed on the upper surface of the second portion of the sealing rib and proximate the free edge of the second portion, a second annular ridge formed on the underside of the top of the closure and positioned inwardly and adjacent the first portion of the annular sealing rib, the first and second annular ridges being so arranged that during attachment of the closure with the neck, the first annular ridge engages with the underside of the top of the closure, the second annular ridge engages with the upper surface of the second portion of the rib adjacent and outside the first annular ridge, and the first and second annular ridges interlock with each other thereby holding the surface of the rib touching the underside the closure stationary and causing the second portion of the sealing rib to be disposed over a greater area of the underside of the top as well as the outer surface of the neck of the container.