Abstract: A closure (10) that is suitable for attachment to a container (20) having an end portion defining an opening of the container. The closure (10) comprises a top portion (11) and a skirt portion (12) depending from the top portion. The closure (10) also has a sealing rib (14) having a first sealing portion (15) which is contiguous with the top portion (11). The first portion (15) has an inner surface made up of at least a first substantially cylindrical surface portion (17) lying radially inwardly of the first surface portion (17). The rib (14) further includes a second sealing portion (16) that is separated from the top portion (11) by the first portion (15) and which, prior to attachment of the closure to the container, extends inwardly to a free edge. The closure (10) further has a continuous nub member (28) extending downwardly and outwardly from the underside of the top portion (11) and positioned radially inwardly of the first sealing portion (15).

Abstract: A closure (10) that is suitable for attachment to a container (20) having an end portion defining an opening of the container. The closure (10) comprises a top portion (11) and a skirt portion (12) depending from the top portion. The closure (10) also has a sealing rib (14) having a first sealing portion (15) which is contiguous with the top portion (11). The first portion (15) has an inner surface made up of at least a first substantially cylindrical surface portion (17) lying radially inwardly of the first surface portion (17). The rib (14) further includes a second sealing portion (16) that is separated from the top portion (11) by the first portion (15) and which, prior to attachment of the closure to the container, extends inwardly to a free edge. The closure (10) further has a continuous nub member (28) extending downwardly and outwardly from the underside of the top portion (11) and positioned radially inwardly of the first sealing portion (15).

Abstract: 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.

Abstract: A closure (10) having a sealing rib (14) projecting downwardly from the underside of its top portion (11). The first portion (15) of the sealing rib (14) increases in thickness as it extends away from the top portion (11). In another aspect, the invention relates to a closure (10) in which the sealing rib (14) has a third portion (18) that is substantially no thicker than the second portion (17) of the rib (14) and has a length longer, and preferably substantially longer, than its thickness. In the second aspect, the third portion (18) of the rib (14) is connected to the second portion (17) at or adjacent its free edge and extends generally in a direction away from the top portion (11). Upon attachment of the closure (10) with the neck (22) of a container, the third portion (18) will be displaced to lie between the end portion (23) of the neck (22) of the container and the top portion (11) of the closure (10).

Abstract: 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.

Abstract: 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.

Abstract: A closure (10) for mounting onto a container (16), the closure (10) including a top portion (11) and a skirt portion (12) depending from the top portion (11). An annular sealing rib (20) projects downwardly from an underside of the top portion (11). The rib (20) includes a first portion (14) which is contiguous with the top portion (11) and has an inner surface (19) which lies radially inwardly of the skirt portion (12) and at least a second, frusto-conical, portion (15) contiguous with the first portion (14) and separated from the top portion (11) by the inner surface (19) of the first portion (14). The second portion (15) has an upper side and an underside and extends radially inwardly to a circular edge.

Abstract: A container closer particularly for use on screw top containers such as carbonated beverage containers, the container closure having a generally cylindrical continuous tamper evident band joined by a plurality of frangible bridges to the free edge of a skirt of the closure. The band has a segmented internal rib which engages an external retaining flange of the container when the closure is applied to the container so that on removal of the closure the tamper evident band remains on the container or is visually clearly damaged by removal of the closure from the container. The band is provided with longitudinal reinforcement by projections or other areas of thickening to provide the band with longitudinal stiffness while still permitting it to expand over the retaining flange on the container.

Abstract: A closure (10) having a scaling rib (14) projecting downwardly from the underside of its top portion (11). The first portion (15) of the scaling rib (14) increases in thickness as it extends away from the top portion (11). In another aspect, the invention relates to a closure (10) in which the sealing rib (14) has a third portion (18) that is substantially no thicker than the second portion (17) of the rib (14) and has a length longer, and preferably substantially longer, than its thickness. In the second aspect, the third portion (18) of the rib (14) is connected to the second portion (17) at or adjacent its free edge and extends generally in a direction away from the top portion (11). Upon attachment of the closure (10) with the neck (22) of a container, the third portion (18) will be displaced to lie between the end portion (23) of the neck (22) of the container and the top portion (11) of the closure (10).

Abstract: A closure (10) having a sealing rib (14) projecting downwardly from the underside of its top portion (11). The first portion (15) of the sealing rib (14) increases in thickness as it extends away from the top portion (11). In another aspect, the invention relates to a closure (10) in which the sealing rib (14) has a third portion (18) that is substantially no thicker than the second portion (17) of the rib (14) and has a length longer, and preferably substantially longer, than its thickness. In the second aspect, the third portion (18) of the rib (14) is connected to the second portion (17) at or adjacent its free edge and extends generally in a direction away from the top portion (11). Upon attachment of the closure (10) with the neck (22) of a container, the third portion (18) will be displaced to lie between the end portion (23) of the neck (22) of the container and the top portion (11) of the closure (10).

Abstract: A container closer (10) particularly for use on screw top containers such as carbonated beverage containers, the container closure (10) having a generally cylindrical continuous tamper evident band (11) joined by a plurality of frangible bridges (13) to the free edge of a skirt (16) of the closure (10). The band (11) has a segmented internal rib (18) which engages an external retaining flange of the container when the closure (10) is applied to the container so that on removal of the closure (10) the tamper evident band (11) remains on the container or is visually clearly damaged by removal of the closure (10) from the container. The band (11) is provided with longitudinal reinforcement by projections (25 and 28) or other areas of thickening (26) to provide the band (11) with longitudinal stiffness while still permitting it to expand over the retaining flange on the container.

Abstract: 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.

Abstract: 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.

Abstract: A container closer (10) particularly for use on screw top containers such as carbonated beverage containers, the container closure (10) having a generally cylindrical continuous tamper evident band (11) joined by a plurality of frangible bridges (13) to the free edge of a skirt (16) of the closure (10). The band (11) has a segmented internal rib (18) which engages an external retaining flange of the container when the closure (10) is applied to the container so that on removal of the closure (10) the tamper evident band (11) remains on the container or is visually clearly damaged by removal of the closure (10) from the container. The band (11) is provided with longitudinal reinforcement by projections (25 and 28) or other areas of thickening (26) to provide the band (11) with longitudinal stiffness while still permitting it to expand over the retaining flange on the container.

Abstract: A container closer (10) particularly for use on screw top containers such as carbonated beverage containers, the container closure (10) having a generally cylindrical continuous tamper evident band (11) joined by a plurality of frangible bridges (13) to the free edge of a skirt (16) of the closure (10). The band (11) has a segmented internal rib (18) which engages an external retaining flange of the container when the closure (10) is applied to the container so that on removal of the closure (10) the tamper evident band (11) remains on the container or is visually clearly damaged by removal of the closure (10) from the container. The band (11) is provided with longitudinal reinforcement by projections (25 and 28) or other areas of thickening (26) to provide the band (11) with longitudinal stiffness while still permitting it to expand over the retaining flange on the container.

Abstract: 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.

Abstract: 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.

Abstract: A container closure 10 for screw top containers such as beverage container, the closure 10 having a generally cylindrical tamper-evident band 11 joined by a plurality of frangible bridges 13b, 13c and at least one extended non-frangible bridge 13a to the free edge of a skirt 16 of the closure 10. The band 11 has a segmented internal rib 18 which engages an external retaining flange 30 of the container 29 when the closure is applied to the container. An L-shaped slot 17 extends through the side wall of the tamper-evident band 11, the horizontal leg 61 of which terminates directly adjacent to or under the extended non-frangible bridge 13a. A weakened frangible region 63 of the band extends from the terminating end 62 of the horizontal leg 61 axially downward to the bottom of the band 11. On removal of the closure 10 from the container 29, the frangible bridges 13b, 13cand frangible region 63 rupture and the band 11 remains captive at the extended bridge 13a to the skirt.