SAFETY CLOSURE AND PACKAGE

• US 3,794,200 A
• Filed: 07/25/1972
• Issued: 02/26/1974
• Est. Priority Date: 07/26/1971
• Status: Expired due to Term

• Current Assignee: Walter J. Marks
• Original Assignee: Walter J. Marks
• Inventors: Marks, Walter J.
• Primary Examiner(s): Hall, George T.
• Application Number:
  US05/274,988
• Time in Patent Office: 581 Days
• Field of Search: 215/9,31,40,41,44
• US Class Current: 215/201
• CPC Class Codes: B65D 41/0471 with means for positioning the cap on the container, or for limiting the movement of the cap, or for preventing accidental loosening of the cap
• CPC Class Codes: B65D 50/06 requiring the combination of different actions in succession

Abstract

A safety closure is described for use in sealing glass or similar containers and which may be used as a regular easily removed twist-on twist-off closure or, alternatively, at the option of the user as a locked safety closure for preventing removal of the closure cap be children. The container and the closure cap have cooperating lugs which engage in the usual manner for permitting the closure cap to be used in an unlocked or freely removable manner. A sealing bead is included in the cap for sealing the package in the unlocked use. A pair of cap engaging grooves are provided on the container finish in addition to the cap lugs for engaging the sealing bead and the cap lugs in the locked position and which act to prevent removal of the cap by children.

Claims

1. A safety closure comprising the combination of a cap shell having a cover and a depending skirt, container engaging lugs projecting inwardly from the lower edge of the cap skirt, and an inwardly projecting sealing bead positioned on the cap skirt intermediate to and spaced from the cap cover and said lugs and adapted for alternatively engaging the container rim at vertically spaced positions.

2. The closure as claimed in claim 1 in which said first position is on an outwardly and upwardly facing portion of said rim and said lower position is at an outwardly and downwardly facing portion of said rim.

3. The closure as claimed in claim 1 which further comprises a sealing gasket on the underside of said closure cap cover spaced from said sealing bead.

4. The closure as claimed in claim 1 which further comprises a resilient sealing gasket ring positioned at said sealing bead.

5. The closure as claimed in claim 1 in which said sealing bead comprises a plurality of sealing rings each having a pointed edge for engaging the container.

6. The closure as claimed in claim 3 in which said gasket comprises a resilient disc.

7. The closure as claimed in claim 3 in which said gasket comprises a resilient ring.

8. The closure as claimed in claim 3 in which said gasket comprises a flowed-in plastisol material.

9. The closure as claimed in claim 1 in which said sealing bead comprises a plurality of spaced arcuate sections.

10. The closure as claimed in claim 1 in which said cap shell comprises an outer metal shell and an inner plastic insert with said sealing bead and said lugs being formed on said insert.

11. The closure as claimed in claim 1 in which said cap shell comprises an outer metal shell and an inner plastic insert with said sealing bead being formed on said plastic insert and said lugs being formed on said metal shell.

12. A safety paCkage comprising a container sealed with a closure cap, said container having a plurality of cap engaging lugs positioned below the container rim, a circular groove adjacent the container rim above said lugs, said closure cap having a cap shell with a cover and a depending skirt, container engaging lugs on said cap skirt for engaging said container lugs, an inwardly directed sealing bead on said cap skirt positioned intermediate of and spaced from said cap lugs and said cover for engaging the container rim above said groove when the cap and container lugs are engaged and for engaging the container groove when said cap lugs are moved below said container lugs.

13. The package as claimed in claim 12 in which said container lugs have lower bead portions which cooperate to form an interrupted bead around the container, the bead interruptions forming passages for the closure cap lugs when the lugs are moved below said container lugs.

14. The package as claimed in claim 12 in which said container lugs have an inclined lug camming surface on their tops.

15. The package as claimed in claim 12 which further comprises a sealing gasket on the underside of said closure cap.

16. The package as claimed in claim 12 which further comprises a resilient sealing gasket ring positioned at said sealing bead.

17. The package as claimed in claim 12 in which said sealing bead comprises a plurality of sealing rings each having a pointed edge for engaging the container.

18. The package as claimed in claim 15 in which said gasket comprises a resilient disc.

19. The package as claimed in claim 15 in which said gasket comprises a resilient ring.

20. The package as claimed in claim 15 in which said gasket comprises a flowed-in plastisol material.

21. The package as claimed in claim 13 in which said cap shell comprises an outer metal shell and an inner plastic insert with said sealing bead and said lugs being formed on said insert.

22. The closure as claimed in claim 13 in which said cap shell comprises an outer metal shell and an inner plastic insert with said sealing bead being formed on said plastic insert and said lugs being formed on said metal shell.

23. An improved finish for the container of a safety package comprising the combination of a circular groove at the container rim, a plurality of cap engaging lugs below said groove, said lugs having an elongated bead on their leading edge, said beads combining to form an interrupted bead around the container with the interruptions proportioned to pass the cap lugs to a position below the interrupted bead.

24. The finish as claimed in claim 23 which further comprises an inclined camming surface on the lug tops.