Closure and container and combination thereof with anti-backoff member

• US 20030160020A1
• Filed: 02/26/2002
• Published: 08/28/2003
• Est. Priority Date: 02/26/2002
• Status: Active Grant

• Current Assignee: Berry Plastics Corporation (Berry Global Group Inc.)
• Original Assignee: Delta Plastics, Inc. (Ball Corporation)
• Inventors: Oh, Jack S.
• Granted Patent: US 6,913,157 B2
• Time in Patent Office: Days
• US Class Current: 215/330
• CPC Class Codes: B65D 41/04 Threaded or like caps or cap-like covers secured by rotation

Abstract

A closure and container combination has in which anti-backoff capability the closure includes a top wall and a depending annular skirt having closure threading formed on an inner surface of the skirt. The closure threads mate with threads on the container. One or more anti-backoff members are formed on the inner surface of the skirt and/or the outer surface of the container neck and arranged and configured to frictionally engage the mating threading between the anti-backoff member and the threading to resist movement of the closure once secured onto the neck of the container.

Claims

1. A closure for use with a container having a neck portion and container threading formed thereon, comprising:

a top wall;

an annular skirt depending from the top wall and having closure threading formed on an inner surface thereof configured and arranged to threadably engage the container threading; and

at least one anti-backoff member formed in a region of the closure threading and being arranged and configured to frictionally engage the container threading between the anti-backoff member and the closure threading to resist movement of the closure once secured onto the neck of the container.

2. The closure of claim 1, wherein the at least one anti-backoff member forms an integral extension of a portion of the closure threading and extends in a circumferential direction about the annular skirt.

3. The closure of claim 2, wherein the at least one anti-backoff member is oriented generally parallel to the top wall of the closure.

4. The closure of claim 1, wherein the at least one anti-backoff member forms an integral extension of an uppermost portion of the closure threading and extends generally in a circumferential direction about the annular skirt.

5. The closure of claim 4, wherein the at least one anti-backoff member is oriented generally parallel to the top wall of the closure.

6. The closure of claim 1, wherein the closure threading is segmented into a plurality of circumferentially spaced closure threading groups, and wherein at least one of the closure threading groups has at least one of the anti-backoff members associated therewith.

7. The closure of claim 6, wherein the at least one anti-backoff member forms an integral extension of a portion of the closure threading in at least one of the closure threading groups and extends in a circumferential direction about the annular skirt.

8. The closure of claim 7, wherein the at least one anti-backoff member is oriented generally parallel to the top wall of the closure.

9. The closure of claim 6, wherein the at least one anti-backoff member forms an integral extension of an uppermost portion of the closure threading in at least one of the closure threading groups and extends generally in a circumferential direction about the annular skirt.

10. The closure of claim 9, wherein the at least one anti-backoff member is oriented generally parallel to the top wall of the closure.

11. The closure of claim 1, wherein the at least one anti-backoff member has a depth relative to an inner surface of the annular skirt that exceeds a depth of the closure threading relative to the inner surface of the annular skirt.

12. The closure of claim 6 further comprising a plurality of anti-backoff members formed in a region of the closure threading in at least one of the closure threading groups.

13. The closure of claim 12, wherein the plurality of anti-backoff members form integral extensions of a portion of the closure threading in at least one of the closure threading groups and extend in a circumferential direction about the annular skirt.

14. The closure of claim 13, wherein the plurality of anti-backoff members are oriented generally parallel to the top wall of the closure.

15. The closure of claim 12, wherein the plurality of anti-backoff members form integral extensions of an uppermost portion of the closure threading in at least one of the closure threading groups and extend generally in a circumferential direction about the annular skirt.

16. The closure of claim 15, wherein the plurality of anti-backoff members are oriented generally parallel to the top wall of the closure.

17. The closure of claim 12, wherein each of the plurality of anti backoff members has a depth relative to an inner surface of the annular skirt that exceeds a depth of the closure threading relative to the inner surface of the annular skirt.

18. A closure for use with a container having a neck portion and container threading formed thereon, comprising:

a top wall;

an annular skirt depending from the top wall and having closure threading formed on an inner surface thereof configured and arranged to threadably engage the container threading; and

at least one anti-backoff member formed as an integral extension of a portion of the closure threading and extending in a circumferential direction about the annular skirt, the at least one anti-backoff member being arranged and configured to frictionally engage the container threading between the anti-backoff member and the closure threading to resist movement of the closure once secured onto the neck of the container.

19. The closure of claim 18, wherein the at least one anti-backoff member is oriented generally parallel to the top wall of the closure.

20. The closure of claim 18, wherein the closure threading is segmented into a plurality of circumferentially spaced closure threading groups, and wherein at least one of the closure threading groups has at least one of the anti-backoff members associated therewith.

21. The closure of claim 20, wherein the at least one anti-backoff member forms an integral extension of a portion of the closure threading in at least one of the closure threading groups and extends in a circumferential direction about the annular skirt.

22. The closure of claim 21, wherein the at least one anti-backoff member is oriented generally parallel to the top wall of the closure.

23. The closure of claim 18, wherein the at least one anti-backoff member has a depth relative to an inner surface of the annular skirt that exceeds a depth of the closure threading relative to the inner surface of the annular skirt.

24. The closure of claim 20 further comprising a plurality of anti-backoff members formed in at least one of the closure threading groups.

25. The closure of claim 24, wherein the plurality of anti-backoff members are oriented generally parallel to the top wall of the closure.

26. The closure of claim 24, wherein each of the plurality of anti-backoff members has a depth relative to an inner surface of the annular skirt that exceeds a depth of the closure threading relative to the inner surface of the annular skirt.

27. A closure and container assembly, comprising:

a container having a neck portion and container threading formed thereon;

a closure having a top wall, an annular skirt depending from the top wall and having closure threading formed on an inner surface thereof configured and arranged to threadably engage the container threading; and

at least one anti-backoff member formed in a region of one of the closure threading and the container threading and being arranged and configured to frictionally engage the other of the container threading and the closure threading to resist movement of the closure once secured onto the neck of the container.

28. The assembly of claim 27 wherein the anti-backoff member is formed on the neck portion of the container.

29. The assembly of claim 27 wherein the anti-backoff member is formed on the annular skirt of the closure.

30. A closure and container assembly, comprising:

a container having a neck portion and container threading formed thereon;

a closure having a top wall, an annular skirt depending from the top wall and having closure threading formed on an inner surface thereof configured and arranged to threadably engage the container threading; and

at least one anti-backoff member formed as an integral extension of a portion of the closure threading and extending in a circumferential direction about the annular skirt, the at least one anti-backoff member being arranged and configured to frictionally engage the container threading between the anti-backoff member and the closure threading to resist movement of the closure once secured onto the neck of the container.