초록 ▼

In an embodiment of the invention there is provided a membrane fitment designed and sized to be inserted into the orifice defined by a container. Retention structure on the fitment cooperates with complimentary structure on the internal wall of the container orifice to secure the fitment within the

In an embodiment of the invention there is provided a membrane fitment designed and sized to be inserted into the orifice defined by a container. Retention structure on the fitment cooperates with complimentary structure on the internal wall of the container orifice to secure the fitment within the orifice such that the combination forms an excellent primary seal. Tamper evidence is offered by the normal requirement for initial membrane removal. Novel designs for the membrane, its associated pull ring, and the frangible removal structure are taught in various embodiments. The novel designs may promote facile initial removal suitable for a child. In addition, the novel designs avoid the potential hazards presented by prior art membranes.

대표청구항 ▼

We claim: 1. The combination of a fitment used in connection with a container neck finish, the combination comprising: a container neck finish being connected to or extending from a container having a bore defined through the container finish for expelling contents contained within the container, t

We claim: 1. The combination of a fitment used in connection with a container neck finish, the combination comprising: a container neck finish being connected to or extending from a container having a bore defined through the container finish for expelling contents contained within the container, the container neck finish having an annular top surface that merges at an outer periphery defined by the annular top surface with a first vertical stretch, the first vertical stretch having a lower end that connects to an inward directed stretch, the inward directed stretch having an inner peripheral edge that merges with a second vertical stretch that connects to an outward directed stretch which further forms an internal downward facing ledge, depending from an outer peripheral edge of the ledge is a third vertical stretch; and a dispensing fitment inserted into the bore of the container neck finish, the dispensing fitment having a top annular flange positioned on the annular top surface, the top annular flange having an inner peripheral edge that merges with a downwardly depending skirt, the skirt having an exterior wall to engage at least an inner edge defined by the annular top surface, the skirt further having an interior wall with an annular projection intermediate top and bottom ends defined by the skirt, a removable membrane circumferentially connected to the annular projection through a line of weakness, the removable membrane having a pull ring connected thereto, and the dispensing fitment further having a retention structure hingedly depending from the bottom end of the skirt, the retention structure including a retaining rim having an edge positioned within an area defined by the internal downward facing ledge and the outward directed stretch. 2. The combination of claim 1, wherein the retaining rim of the retention structure further includes at least one drain hole positioned near the bottom end of the skirt. 3. The combination of claim 1, wherein the retaining rim of the retention structure further includes at least one pleated flute positioned circumferentially around the retaining rim. 4. The combination of claim 3, wherein the flutes generally have a V shaped cross section with a portion extending outwardly past the edge of the retaining rim. 5. The combination of claim 1, wherein the retaining rim is generally in the form of a truncated cone. 6. The combination of claim 1, wherein the exterior wall of the skirt is recessed inwardly along a first circumferential line intermediate the top and bottom ends of the skirt. 7. The combination of claim 1, wherein an outside diameter of the skirt has a larger diameter than a diameter defined by an inner edge of the annular top surface defined by the container finish to define a primary seal. 8. The combination of claim 7, wherein the exterior wall of the skirt is further positioned against an inner wall defined by the second vertical stretch to define a secondary seal. 9. The combination of claim 1, wherein the pull ring is connected to the membrane through at least one post connection. 10. The combination of claim 1, wherein the membrane is dished downwardly to allow access to the pull ring. 11. The combination of claim 1 further comprising a peelable label attached to a top surface of the top annular flange of the dispensing fitment. 12. A fitment used for insertion into a bore defined by a container neck finish, the container neck finish further having an annular top surface, an outwardly directed stretch that forms an internal downward facing ledge, and a vertical stretch defined between the annular top surface and the outwardly directed stretch, the fitment further comprising: a top annular flange positioned on the annular top surface of the container finish, the top annular flange having an inner peripheral edge that merges with a downwardly depending skirt, the skirt having an interior wall with an annular projection intermediate top and bottom ends defined by the skirt, a removable membrane circumferentially connected to the annular projection through a line of weakness, the removable membrane having a pull ring connected thereto; and a retention structure hingedly depending from the bottom end of the skirt, the retention structure including a retaining rim having an edge positioned within an area defined by the internal downward facing ledge and the outward directed stretch. 13. The fitment of claim 12, wherein the skirt further includes an exterior wall to engage at least an inner edge defined by the annular top surface. 14. The fitment of claim 12, wherein the retaining rim of the retention structure further includes at least one drain hole positioned near the bottom end of the skirt. 15. The fitment of claim 12, wherein the retaining rim of the retention structure further includes at least one pleated flute positioned circumferentially around the retaining rim. 16. The fitment of claim 15, wherein the flutes generally have a V shaped cross section with a portion extending outwardly past the edge of the retaining rim. 17. The fitment of claim 12, wherein the retaining rim is generally in the form of a truncated cone. 18. The fitment of claim 12, wherein the skirt has an exterior wall that is recessed inwardly along a first circumferential line intermediate the top and bottom ends of the skirt. 19. The fitment of claim 12, wherein an outside diameter of the skirt has a larger diameter than a diameter defined by an inner edge of the annular top surface defined by the container finish to define a primary seal. 20. The fitment of claim 18, wherein the exterior wall of the skirt is further positioned against an inner wall defined by the vertical stretch to define a secondary seal. 21. The fitment of claim 12, wherein the pull ring is connected to the membrane through at least one robust post connection. 22. The fitment of claim 12, wherein the membrane is dished downwardly to allow access to the pull ring. 23. The fitment of claim 12 further comprising a peelable label attached to a top surface of the top annular flange of the dispensing fitment.