Device for preventing removal of a lid

1. A device for a container, the device comprising a cover including a tubular portion which fits over an opening of the container, an engagement means including at least one resiliently flexible engagement member and a retaining means comprising a plurality of movable members which are locatable around an external surface of the cover and wherein in a first mode of operation the cover is prevented from removal when the engagement member engages part of the container and the movable members are moved to a position where they are located adjacent to the engagement member in a radial direction and cover the engagement member to prevent outward movement of the engagement member and in a second mode of operation the movable members are rotated to an unlocking position whereby the engagement member is able to move outwardly to disengage from the part of the container to enable the cover to be removed.

2. The device as claimed in claim 1 wherein the engagement means includes a plurality of engagement members.

3. The device as claimed in claim 2 wherein each engagement member comprises a leg portion with an engagement portion which is configured to engage with a lateral wall of a container.

4. The device as claimed in claim 3 wherein each leg portion is integrally formed with an upper section of the engagement means and extends downwardly and coaxially with the upper section and with each of the other leg portions.

5. The device as claimed in claim 2 wherein the engagement members are configured to flex apart as the cover is placed over the top of the container.

6. The device as claimed in claim 2 wherein the engagement members are configured to initially flex outwardly and then inwardly as engagement occurs between the engagement portions and the lateral wall of the container.

7. The device as claimed in claim 1 wherein the retaining means is configured to prevent the engagement members from flexing apart in the first mode of operation.

8. The device as claimed in claim 1 comprising coupling portions which extend outwardly from an outer surface of part of the device for coupling with the retaining means.

9. The device as claimed in claim 8 wherein the coupling portions extend outwardly from an outer surface of the cover.

10. The device as claimed in claim 9 wherein the coupling portions are arranged around the periphery of the outer surface.

11. The device as claimed in claim 10 wherein the outer surface is located below a top end of the cover.

12. The device as claimed in claim 11 wherein the cover includes a top surface which is configured to be located above the opening to the container when the device is located over the container.

13. The device as claimed in claim 12 wherein the cover incorporates the engagement means at a lower end thereof.

14. The device as claimed in claim 1 wherein the cover includes a lower section including a plurality of leg segments.

15. The device as claimed in claim 14 wherein each leg segment extends downwardly from a tubular section of the cover.

16. The device as claimed in claim 15 wherein each leg segment includes protrusions on its outer surface, which protrusions act as the coupling portions.

17. The device as claimed in claim 16 wherein each leg segment includes an inwardly directed peripheral collar segment which forms part of the engagement means.

18. The device as claimed in claim 17 wherein the cover incorporates end portions which are configured to retain the movable members there between.

19. The device as claimed in claim 18 wherein the engagement means includes one or more separate parts which connect together.

20. The device as claimed in claim 1 wherein the engagement means comprises at least two leg portions each with engagement portions which are configured to engage underneath a lateral wall of the container.

21. The device as claimed in claim 20 wherein the retaining means is configured to be able to prevent the leg portions from flexing apart so that their engagement portions can disengage from the container.

22. The device as claimed in claim 21 wherein the retaining means is configured to squeeze the leg portions together so that the engagement means can engage part of the container.

23. The device as claimed in claim 22 wherein the cover includes coupling portions for co-acting with the retaining means to retain the engagement means in engagement with part of the container.

24. The device as claimed in claim 1 wherein the movable members are rotatable about the external surface of the cover.

25. The device as claimed in claim 24 wherein each member is independently rotatable.

26. The device as claimed in claim 25 wherein each movable member is coupled to an adjacent movable member.

27. The device as claimed in claim 26 wherein each movable member comprises coupling means for coupling with the coupling portions.

28. The device as claimed in claim 27 wherein when the coupling means of the movable members are coupled with the coupling portions, the movable members are prevented from movement between the end portions of the cover.

29. The device as claimed in claim 28 wherein the coupling means comprises one or more recesses on an inner peripheral surface of each movable member.

30. A device for a container, the device comprising a cover including a tubular portion which fits over a lid of the container, an engagement means for engaging part of the container to prevent removal of the cover from the container and a retaining means comprising a plurality of movable members and wherein in a first mode of operation the cover is prevented from removal when the engagement means engages part of the container and the movable members are moved to a position where they are located adjacent in a radial direction and cover the engagement means to prevent outward movement of the engagement means and in a second mode of operation the movable members are rotated to an unlocking position whereby the engagement means is able to move outwardly to disengage from the part of the container to enable the cover to be removed.

31. The device as claimed in claim 30 comprising coupling portions which extend outward from an outer surface of part of the device for coupling with the retaining means.

32. The device as claimed in claim 31 wherein the coupling portions extend outwardly from an outer surface of the cover.

33. The device as claimed in claim 32 wherein the coupling portions are arranged around the periphery of the outer surface.

34. The device as claimed in claim 33 wherein the outer surface is located below a top end of the cover.

35. The device as claimed in claim 30 wherein the cover includes a top surface which is configured to be located above the lid when the device is located over the container.

36. The device as claimed in claim 30 wherein the engagement means includes a plurality of engagement members.

37. The device as claimed in claim 36 wherein each engagement member comprises a leg portion with an engagement portion which is configured to engage with a lateral wall of a container.

38. The device as claimed in claim 30 wherein the retaining means is configured to prevent the engagement members from flexing apart in the first mode of operation.

39. The device as claimed in claim 36 wherein the engagement members are configured to flex apart as the cover is placed over the top of the container.

40. The device as claimed in claim 37 wherein the engagement members are configured to initially flex outwardly and then inwardly as engagement occurs between the engagement portions and the lateral wall of the container.

41. The device as claimed in claim 30 wherein the engagement means includes a removable engagement part which is configured to engage with an engagement portion of the cover to retain the cover over the container.