Crown cork closure and closing method

Patent metadata

Field	Value
Publication number	US-10730673-B2
Application number	US-201615277382-A
Country	US
Kind code	B2
Filing date	Sep 27, 2016
Priority date	Mar 27, 2014
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

A crown cork closure and closing method. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. § 1.72(b). As stated in 37 C.F.R. § 1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

First claim

What is claimed is:

1. A container closure structure comprising:
a metallic crown cork comprising a disc-shaped main portion and a substantially ring-shaped, corrugated edge portion;
said edge portion being disposed at an angle to said main portion and to surround said main portion;
said edge portion comprising a plurality of projections, which projections form alternating peak portions and valley portions;
upon installation of said crown cork on a container, a first section of an inside surface of said edge portion being in contact with the container, and a second section of said inside surface of said edge portion being disposed a distance from said container with hollow spaces therebetween; and
a deformable sealing material being disposed at an edge of said edge portion furthest from said main portion and not extending to an outside surface of said edge portion, and on only a portion of said second section of said inside surface of said edge portion, to seal and close off said hollow spaces from the outside environment, which hollow spaces are disposed axially between said main portion and said sealing material.

2. The container closure structure according to claim 1 , wherein said sealing material comprises a thickness that varies about the length thereof.

3. The container closure structure according to claim 2 , wherein:
the container closure structure has a central axis;
said second section of said inside surface of said edge portion comprises alternating inside peak surface portions and inside valley surface portions;
said inside peak surface portions are disposed further away from the central axis, in a radial direction, than said inside valley surface portions, such that, upon installation of said crown cork on a container, said inside peak surface portions are disposed further away from the outer surface of the container than said inside valley surface portions; and
the thickness of said sealing material is thicker on said inside peak surface portions than on said inside valley surface portions.

4. The container closure structure according to claim 3 , wherein the thickness of said sealing material on said inside valley surface portions is at most one millimeter.

5. The container closure structure according to claim 3 , wherein the thickness of said sealing material on said inside valley surface portions is at most 0.5 millimeter.

6. The container closure structure according to claim 3 , wherein the thickness of said sealing material on said inside valley surface portions is less than 0.2 millimeter.

7. The container closure structure according to claim 3 , wherein the thickness of said sealing material on said inside valley surface portions is sufficiently small to minimize shearing of said sealing material upon installation of said crown cork on a container.

8. The container closure structure according to claim 3 , wherein said sealing material contains a germ-inhibiting or germicidal substance.

9. The container closure structure according to claim 3 , wherein:
the container closure structure comprises a top seal disposed on said main portion and configured to seal a top edge or lip of a container; and
said sealing material being separate and disposed a distance from said top seal.

10. The container closure structure according to claim 3 , wherein, upon installation of said crown cork on a container, said sealing material contacts the container only at a section of said mouth portion of the container below a lip portion of the container.

11. The container closure structure according to claim 1 , wherein:
said sealing material is a rubber-type or foam-type material; and
the outer surface of said rubber-type or foam-type material comprises no or essentially no pores in relation to the inner surface of said rubber-type or foam-type material.

12. The container closure structure according to claim 1 , wherein said sealing material is a material which is activatable in respect of the volume.

13. The container closure structure according to claim 12 , wherein said sealing material is a material which is activatable by the application of energy.

14. The container closure structure according to claim 12 , wherein said sealing material is a material which is activatable by the application of thermal energy to expand said sealing material.

15. The container closure structure according to claim 12 , wherein said sealing material exhibits a memory effect, and, after reduction by pressure, retains a compressed reduced volume form for a certain time, or, respectively, tries to regain the original enlarged volume form.

16. The container closure structure according to claim 1 , wherein said sealing material comprises one or more applications of a hot and/or melt adhesive.

17. The container closure structure according to claim 1 , wherein said sealing material projects radially outwards past said edge portion.

Assignees

• Hillmann Heinz
• Krieg Andreas
• Khs Gmbh

Inventors

• Hillmann Heinz
• Krieg Andreas

Classifications

• B65D41/12 Primary

  made of relatively stiff metallic materials, e.g. crown caps · CPC title

• B65D53/06 Primary

  Sealings formed by liquid or plastic material · CPC title