Child resistant tamper indicating closure

• US 4,431,110 A
• Filed: 11/09/1982
• Issued: 02/14/1984
• Est. Priority Date: 11/09/1982
• Status: Expired due to Term

• Current Assignee: Continental Can Company Incorporated (Dean Foods Company)
• Original Assignee: Continental Can Company Incorporated (Dean Foods Company)
• Inventors: Roth, Donald J.
• Primary Examiner(s): Hall, George T.
• Application Number:
  US06/440,397
• Time in Patent Office: 462 Days
• Field of Search: 215/211, 215/213, 220/259, 220/260, 220/270, 220/307
• US Class Current: 215/213
• CPC Class Codes: B65D 2401/15 Tearable part of the closure B65D2401/60 takes precedence
• CPC Class Codes: B65D 47/0838 located at an edge of the base element
• CPC Class Codes: B65D 50/06 requiring the combination of different actions in succession

Abstract

This relates to a closure and container assembly wherein the closure has a plug member which is received within the dispensing or pour opening of the container and wherein the plug member has an interlock beneath a shoulder of the container surrounding the pour opening such as normally to prevent removal of the plug member. The pour opening has a limited portion of increased diameter or radial displacement which permits removal of the plug member when an associated lever and the plug member are aligned with this enlargement. There is also a tamper indicating connection between the lever and the plug member which identifies when the lever has been lifted.

Claims

1. A closure assembly of the type including a container having a dispensing opening surrounded by an axially inwardly facing annular shoulder, a closure plug received in said container opening and having an enlargement defining an axially outwardly facing annular shoulder lockable behind said container shoulder, and a lever connected to said closure plug for applying a lifting force to a limited circumferential portion of said enlargement, the relationship between said shoulders being such that for most of the circumference of said container shoulder the lever is inoperative to remove said closure plug, and a circumferential portion of said container shoulder being relieved wherein when said limited circumferential portion of said enlargement is aligned with said relieved portion of said container shoulder said lever is operative to remove said closure plug, and said closure plug being rotatable within said dispensing opening relative to said container so as to be child-proof.

2. A closure assembly according to claim 1 wherein said enlargement is greatest along said limited circumferential portion.

3. A closure assembly according to claim 2 wherein there is indicia on said container cooperable with said closure assembly to align said closure plug limited circumferential portion with said container relieved portion.

4. A closure assembly according to claim 1 wherein there is indicia on said container cooperable with said closure assembly to align said closure plug limited circumferential portion with said container relieved portion.

5. A closure assembly according to claim 1 wherein said lever has tamper indicating means.