Claims
- 1. A closure for a container having a neck formed with a lip and a surrounding bead comprising,
- a unitary cap having a cap top shaped to fit over said neck formed with a well having a side wall having an interior and an exterior and an open bottom, said well side wall interior having an inner bead located adjacent a distal end of said well, a cap skirt depending from said cap top shaped to fit around said lip and surrounding bead and having cap retention means cooperable with said neck to hold said cap on said neck in liquid-tight manner,
- a plug for said well having a plug top and a plug wall connected to said plug top at a circular junction, said plug wall having an interior and an exterior, a flange projecting outward from said plug wall larger than said well side wall interior to limit inward movement of said plug relative to said well, said plug wail exterior being formed with a circumferential groove and a shoulder below said groove located adjacent an end of said plug wall exterior remote from said plug top, said shoulder being dimensioned to restrain said plug from unintentional withdrawal from said well by engaging said inner bead, a portion of said plug wall exterior being dimensioned to seal against a portion of said well side wall interior when said plug is fully seated within said well.
- 2. A closure according to claim 1 in which said portion of said plug wall exterior comprises said groove.
- 3. A closure according to claim 2 in which said groove is characterized by the absence of vertical mold parting lines.
- 4. A closure according to claim 1 in which said plug wall exterior is formed with a circumferential seal bead said circumferential groove, said portion of said plug wall exterior comprising said seal bead.
- 5. A closure according to claim 4 in which said seal bead and said inner bead are characterized by the absence of vertical mold parting lines.
- 6. A closure according to claim 1 in which said plug wall exterior is formed with at least one longitudinal groove extending to adjacent a bottom edge of said plug, said closure being characterized in that communication between said container and atmosphere is established through said at least one longitudinal groove as soon as said portion of said well side wall interior is moved below said portion of said plug wall exterior.
- 7. A closure according to claim 1 in which said plug wall has a cylindrical extension extending substantially above said circular junction.
- 8. A closure according to claim 7 in which said plug top comprises a top wall extending downwardly-outwardly to said plug wall, and intersecting said interior of said plug wall at said circular junction, said circular extension being above said junction, said circular extension being flexible inwardly, said flange being located on said extension.
- 9. A closure according to claim 7 in which said plug top is dome shaped and has a lower portion intersecting said plug wall at said circular junction.
- 10. A closure according to claim 9 in which said plug wall has an extension extending substantially above said circular junction, said flange being located on said extension.
- 11. A closure according to claim 1 in which said plug top comprises a top wall of diameter smaller than said plug wall and which further comprises a downward-outward slanted wall intersecting said interior of said plug wall at said circular junction, said extension extending substantially above said circular junction.
- 12. A closure according to claim 11 in which said flange is below said slanted wall.
- 13. A closure according to claim 6 in which said plug wall exterior is formed with a first circumferential groove and a second circumferential groove below said first circumferential groove and a seal bead between said first and second circumferential grooves, said seal bead comprising said portion of said plug wall exterior.
- 14. A closure according to claim 13 in which said at least one longitudinal groove communicates with said second circumferential groove.
- 15. A closure according to claim 6 which further comprises a notch formed in a lower edge of said plug skirt aligned with said at least one longitudinal groove.
- 16. A closure according to claim 1 in which said cap and said well side wall interior are characterized by having no vertical seams.
- 17. A closure according to claim 1 in which said cap retention means comprises a rounded corner curving downwardly-outwardly of said cap top, at least one inwardly projecting circumferential seal bead on the inside of said rounded corner, said corner being intermediate said cap top and said cap skirt, and a tension ring on the inside of said skirt positioned to fit under said bead of said neck and draw said seal beads tightly against said neck lip and bead.
- 18. A closure according to claim 17 in which said closure is tamper evident and which further comprises a first score line extending around at least a portion of the inside of said skirt immediately below said tension ring, a second score line extending upwardly from the bottom edge of said cap skirt to merge with said first score line and a tab depending from the bottom edge of said cap skirt, said cap skirt being dimensioned to fit tightly around said container neck until the portion of said cap skirt below said first score line has been loosened from said neck by pulling on said tab to tear said cap skirt along said second score line and at least a portion of said first score line.
- 19. A closure according to claim 2 wherein said plug flange is located above the level of said plug top, and said circumferential groove is formed below said flange, whereby said skirt vicinal said groove is flexible.
- 20. A closure according to claim 19 in which said plug top comprises a closed end of diameter smaller than said plug wall and a downward-outward slanted wall extending from said closed end and intersecting said plug wall below the level of said circumferential groove.
- 21. In combination, a closure according to claim 1 and a dispenser tube having a tube end smaller than said plug wall interior and a circumferential tube groove below said tube end, said plug further comprising an in-turned flange at a lower edge of said plug wall shaped to fit into said dispenser tube circumferential groove to detachably secure said plug to said tube when said tube end is inserted inside said plug wall.
- 22. The combination of claim 21 wherein said dispenser tube below said tube groove is dimensioned to fit inside said well with a sliding, liquid-tight fit.
- 23. A combination according to claim 21 which further comprises an adapter having a cylindrical portion surrounding said dispenser tube and wherein said cap skirt has an outside bead dimensioned to fit inside said cylindrical portion with a sliding, liquid-tight fit.
- 24. The combination of claim 21 wherein the inside of the lower end of said well is formed with a first chamfer and the outside of said plug wall is formed with a second chamfer at its lower end, said chamfers facilitating insertion of said plug in said well.
- 25. A closure according to claim 1 in which said plug wall exterior comprises a portion having no seam thereon, said well having at least a portion that is seamless, said portion of said plug wall exterior and said portion of said well wall interior sealing against each other when said plug is fully seated in said well.
- 26. A closure for a container of the type having a neck formed with a lip and a surrounding bead comprising
- a unitary cap having a cap top shaped to fit over said neck formed with a well having a seamless cylindrical interior and an open bottom, a cap skirt depending from said top shaped to fit around said lip and bead and having cap retention means cooperable with said neck to hold said cap on said neck in liquid-tight manner,
- a plug for said well having a plug top and a cylindrical member surrounding and attached to said plug top, said cylindrical member comprising a plug skirt, a flange projecting outward from said cylindrical member larger than the inside of said well to limit inward movement of said plug relative to said well, an outside wall of said cylindrical member being smaller in diameter than said flange and said outside wall being formed with a circumferential groove, said cylindrical member having a portion having an outside diameter dimensioned to form with said interior side wall of said well a liquid-tight fit, said plug top being formed with a closed end smaller than said cylindrical member and a downward-outward directed wall merging with said cylindrical member, there being a space between said downward-outward directed wall and said cylindrical member opposite said circumferential groove to permit said cylindrical member to deform inwardly at said circumferential groove,
- said well being formed with an in-turned inner bead adapted to fit into said groove to hold said plug fully seated in said well,
- a portion of said cylindrical member being characterized by the fact that it has an outside surface with no vertical seam thereon, said well being characterized by the fact that said well has no vertical seam, said cylindrical member vicinal said groove being flexible, whereby said cylindrical member may be collapsed inwardly.
- 27. A closure according to claim 26 in which said outside wall has a shoulder below said groove, said well being formed with an inner bead adapted to engage said shoulder to restrain said plug in said well against unintentional dislodgement.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of co-pending application Ser. No. 07/772,949 filed Oct. 08, 1991 now U.S. Pat. No. 5,232,125. The subject matter thereof is incorporated herein by reference.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
WO903919 |
Apr 1990 |
WOX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
772949 |
Oct 1991 |
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