Closure

Patent metadata

Field	Value
Publication number	US-12077345-B2
Application number	US-201917050685-A
Country	US
Kind code	B2
Filing date	Apr 26, 2019
Priority date	Apr 26, 2018
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

A closure ( 10 ) for a container mouth, comprising a cap ( 15 ) and a retaining ring ( 20 ) for retaining the closure on a container mouth, a tether ( 45 ) is provided between the cap side wall and the retaining ring along the circumference of the cap, one end of the tether is fixedly connected to the side wall and the other end is fixedly connected to the retaining ring, in which the tether is connected to the cap by a root ( 30 ) and extends from the root in a clockwise direction.

First claim

What is claimed:

1. A closure in combination with a container having a container neck, the closure comprising a cap, and a retaining ring for retaining the closure on the container neck, a tether is provided between the cap and the retaining ring, one end of the tether is fixedly connected to the cap and the other end is fixedly connected to the retaining ring, the tether is connected to the cap by a root and extends from the root in a clockwise, cap screwing-on direction, the ring is rotatable but exerts a compression force on the container neck whereas the cap is not as impeded in its rotation on the container neck, when the cap is unscrewed and removed for the first time and then re-screwed onto the neck the ring is retarded as it rotates together with the cap and thereby rotates less than the cap causing the tether to buckle and bulge outwards along its length above the retaining ring, thereby providing evidence of tampering.

2. A combination as claimed in claim 1 , in which the closure comprises a main frangible line formed between the cap and the ring.

3. A combination as claimed in claim 2 , in which a tether-forming frangible line is formed axially beneath the main frangible line.

4. A combination as claimed in claim 3 , in which the interface between the main frangible line and the tether-forming frangible line is chicane-like.

5. A combination as claimed in claim 1 , in which a circumferential extent of the tether-forming frangible line is: in the range 10 degrees to 40 degrees; in the range 40 degrees to 70 degrees; approximately 55 degrees; in the range 70 degrees to 120 degrees; or approximately 90 degrees.

6. A combination as claimed in claim 1 , in which the retaining ring includes a bead for retaining the ring on a container mouth.

7. A combination as claimed in claim 1 , in which the retaining ring comprises one or more retaining flaps for retaining the ring on a container mouth.

8. A combination as claimed in claim 1 , in which a cross section of the tether is in the range 0.5 mm 2 to 3 mm 2 .

9. A combination as claimed in claim 1 , comprising one or more frangible lines, in which the frangible line/s are formed by moulded bridges.

10. A combination as claimed in claim 9 , comprising one or more frangible lines, in which the frangible lines are slit.

11. A combination as claimed in claim 1 , in which the tether is formed in the ring.

12. A combination as claimed in claim 1 , in which the cap is able to be in a docked position on a container mouth.

13. A combination as claimed in claim 1 , in which the retaining ring is retarded as it rotates together with the cap, the difference in rotation causing the cap to overtake the ring and causing deformation of the tether, the deformation providing an additional visual form of tamper evidence.

14. A combination as claimed in claim 1 , in which the cap comprises a top plate and a side wall depending from the periphery thereof, the retaining ring being arranged axially beneath the side wall.

15. A combination as claimed in claim 1 , in which the cap comprises a base and a lid hingedly connected together and a dispensing member, the retaining ring is formed on the base.

16. A combination as claimed in claim 1 , in which the container has a neck transport bead and in which the tether enables the cap to be able to assume a docked position under the neck transport bead.

17. A combination as claimed in claim 1 , in which the container includes a molded recess and the cap is able to assume a docked position in the recess.

Assignees

• Obrist Closures Switzerland

Inventors

• Benoit-Gonin Claude
• Widmer Sebastien
• Rognard Axel
• Dreyer Lino
• Hood Graeme

Classifications

• B65D55/16

  Devices preventing loss of removable closure members · CPC title

• B65D2401/20

  Frangible elements completely enclosed in closure skirt · CPC title

• B65D2401/35

  Vertical or axial lines of weakness · CPC title

• B65D2401/30

  Tamper-ring remaining connected to closure after initial removal · CPC title

• B65D41/3409

  the tamper element being integrally connected to the closure by means of bridges · CPC title