초록 ▼

The present invention generally provides a threaded tamper-evident closure having an annular hook-shaped flange extending radially inward from the inner surface of the tamper-evident band attached to the bottom edge of the closure body. The hook-shaped flange can be continuous or segmented and forms

The present invention generally provides a threaded tamper-evident closure having an annular hook-shaped flange extending radially inward from the inner surface of the tamper-evident band attached to the bottom edge of the closure body. The hook-shaped flange can be continuous or segmented and forms an upwardly angled surface for engaging the sealing flange on the bottle neck. A plurality of elevated areas extend upwardly from the tamper-evident band in spaced relation to the bottom edge of the closure body. The frangible elements connecting the tamper evident band to the lower edge of the closure depending annular flange may be configured to extend from these elevated areas as well as the non-elevated areas of the tamper-evident band. A second preferred embodiment of the present invention provides a threaded tamper-evident plastic closure having a tamper-evident band containing the above-described features, for use with a tamper evident push-pull resealable pour spout which is substantially leak proof. The present invention also optionally provides a tamper-evident dust cover which encloses the push-pull pour spout closure when inserted on the container. The dust cover is provided with a ratcheted tamper-evident sealing band which remains intact upon initial installation of the dust cover onto the container and which is broken when the dust cover is initially disturbed.

대표청구항 ▼

1. A tamper indicating closure comprising a top portion, an annular depending skirt extending therefrom, a first tamper indicating ring connected to said depending skirt by at least one circumferentially positioned first frangible element, said first tamper indicating ring including at least one arc

1. A tamper indicating closure comprising a top portion, an annular depending skirt extending therefrom, a first tamper indicating ring connected to said depending skirt by at least one circumferentially positioned first frangible element, said first tamper indicating ring including at least one arcuate projection extending around at least a portion of said first tamper indicating ring arranged for registration with an annular locking flange on a container neck portion on which said closure is positioned, said depending skirt having at least one internal thread for engaging at least one external thread on the neck portion of said container, wherein the improvement comprises:at least one said arcuate projection comprising a locking member extending radially inward from said first tamper indicating ring with a surface at an angle to a plane normal with said first tamper indicating ring, said locking member comprising a plurality of gussets extending upwardly from and in a direction substantially perpendicular to a sealing surface of said locking member to assist in dislodging said first tamper indicating ring from the remainder of said closure. 2. A tamper indicating closure comprising a top portion, an annular depending skirt extending therefrom, a first tamper indicating ring connected to said depending skirt by at least one circumferentially positioned first frangible element, said first tamper indicating ring including at least one arcuate projection extending around at least a portion of said first tamper indicating ring arranged for registration with an annular locking flange on a container neck portion on which said closure is positioned, said depending skirt having at least one internal thread for engaging at least one external thread on the neck portion of said container, wherein the improvement comprises:(a) at least one said arcuate projection comprising a locking member extending radially inward from said first tamper indicating ring with a surface at an angle to a plane normal with said first tamper indicating ring; and(b) a resealable push-pull pour spout closure assembly comprising:(i) a spout member defining a spout opening and having positioned in spaced relationship thereto a plug with at least one support member defining said relationship; and(ii) a slidable secondary closure member having a central opening therethrough for cooperation with said plug the improvement therein comprising said central opening having a diameter substantially the same as that of said plug, said central opening being defined by an inner surface having at least one annular seal flange projecting radially into said central opening for engagement with said plug, wherein at least one said annular seal flange is discontinuous. 3. A tamper indicating closure comprising a top portion, an annular depending skirt extending therefrom, a first tamper indicating ring connected to said depending skirt by at least one circumferentially positioned first frangible element, said first tamper indicating ring including at least one arcuate projection extending around at least a portion of said first tamper indicating ring arranged for registration with an annular locking flange on a container neck portion on which said closure is positioned, said depending skirt having at least one internal thread for engaging at least one external thread on the neck portion of said container, wherein the improvement comprises:(a) at least one said arcuate projection comprising a locking member extending radially inward from said first tamper indicating ring with a surface at an angle to a plane normal with said first tamper indicating ring; and(b) a resealable push-pull pour spout closure assembly comprising:(i) a spout member defining a spout opening and having positioned in spaced relationship thereto a plug with at least one support member defining said relationship; and(ii) a slidable secondary closure member having a central opening therethrough for cooperation with said plug the improvement therein comprising said central opening having a diameter substantially the same as that of said plug, said central opening being defined by an inner surface having at least one annular seal flange projecting radially into said central opening for engagement with said plug, wherein said plug comprises a circular disk and an integral depending annular skirt extending from the periphery of said disk to attach said disk to said support member thereby defining a hollow cavity within said plug. 4. A tamper indicating closure comprising a top portion, an annular depending skirt extending therefrom, a first tamper indicating ring connected to said depending skirt by at least one circumferentially positioned first frangible element, said first tamper indicating ring including at least one arcuate projection extending around at least a portion of said first tamper indicating ring arranged for registration with an annular locking flange on a container neck portion on which said closure is positioned, said depending skirt having at least one internal thread for engaging at least one external thread on the neck portion of said container, wherein the improvement comprises:(a) at least one said arcuate projection comprising a locking member extending radially inward from said first tamper indicating ring with a surface at an angle to a plane normal with said first tamper indicating ring; and(b) a second tamper ring indicating ring connected to said annular wall and a plurality of circumferentially spaced dimples extending from said spout member; and(c) a resealable push-pull pour spout closure assembly comprising:(i) a spout member defining a Spout opening and having positioned in spaced relationship thereto a plug with at least one support member defining said relationship; and(ii) a slidable secondary closure member having a central opening therethrough for cooperation with said plug the improvement therein comprising said central opening having a diameter substantially the same as that of said plug, said central opening being defined by an inner surface having at least one annular seal flange projecting radially into said central opening for engagement with said plug, wherein said secondary closure member further comprises an annular wall depending from the periphery of said secondary closure member having at least one internally extending annular flange being spaced at a distance from said secondary closure member greater than the length of the inner surface of grid central opening to permit said secondary closure member to slide and disengage said plug to permit a fluid to pass through said central opening. 5. The tamper indicating closure of claim 4, wherein said dimples are spaced equally around the circumference of said spout member. 6. The tamper indicating closure of claim 4, wherein said dimples facilitate breaking a plurality of circumferentially spaced second frangible elements connecting said second tamper indicating ring to said annular wall. 7. A tamper indicating closure comprising a top portion, an annular depending skirt extending therefrom, a first tamper indicating ring connected to said depending skirt by at least one circumferentially positioned first frangible element, said first tamper indicating ring including at least one arcuate projection extending around at least a portion of said first tamper indicating ring arranged for registration with an annular locking flange on a container neck portion on which said closure is positioned, said depending skirt having at least one internal thread for engaging at least one external thread on the neck portion of said container, wherein the improvement comprises:(a) at least one said arcuate protection comprising a locking member extending radially inward from said first tamper indicating ring with a surface at an angle to a plane normal with said first tamper indicating ring;(b) a resealable push-pull pour spout closure assembly comprising:(i) a spout member defining a spout opening and having positioned in spaced relationship thereto a plug with at least one support member defining said relationship; and(ii) a slidable secondary closure member having a central opening therethrough for cooperation with said plug the improvement therein comprising said central opening having a diameter substantially the same as that of said plug, said central opening being defined by an inner surface having at least one annular seal flange projecting radially into said central opening for engagement with said plug; and(c) a cover attached to said closure for enclosing said push-pull pour spout closure assembly, wherein said cover is attached to said closure by a third tamper indicating ring, wherein said third tamper indicating ring includes ratcheted teeth for engaging ratcheted teeth positioned on said top portion of said closure.