Safety cap and container

Claim 2

A safety package comprising: a container having a mouth portion with an annular rim; a one-piece cap having a base with a peripheral flange projecting axially therefrom for receiving said mouth portion; interengageable locking elements on the outer wall of the mouth of the container and inner wall of the flange of the cap, the cap locking elements being spaced peripherally from each other and engageable with and disengageable from the container locking elements by combined axial and rotative motion of the cap relative to the container; a resilient flexible member formed on the base of the cap having an inner annular end joined integrally to the base of the cap and extending axially therefrom and terminating in an outer annular free end, said inner annular end at the juncture with the base having a diameter at least as large as that of the outer annular free end; said outer annular free end being engageable with the container to exert a biasing force in an axial direction between the cap and container when the locking elements are engaged.

Claim 3

A safety package as claimed in claim 1 wherein: said container has an internal sloping surface adjacent to said mouth portion and said outer annular free end engages said sloping surface so as to exert said biasing force when the locking elements are engaged.

Claim 4

A safety package as claimed in claim 1 wherein: said container has an internal conical surface adjacent to said mouth portion and said outer annular end engages said conical surface to exert said biasing force when the locking elements are engaged.

Claim 5

A safety package as claimed in claim 1 wherein: said container has an internal conical surface adjacent to said mouth portion, said outer annular end has a cylindrical shape prior to engagement with the container, and said outer annular end engages said conical surface and is deflected inwardly thereby to exert said biasing force when the locking elements are engaged.

Claim 6

A safety package as claimed in claim 3 wherein: said resilient flexible member comprises a continuous, imperforate wall including said outer annular end; and said outer annular end forms a seal with said conical surface whereby said cap tightly seals said container against contaminants when said locking elements are engaged.

Claim 7

A safety package as claimed in claim 1 wherein: said resilient flexible member is a thin-walled, hollow cylinder.

Claim 8

A safety package as claimed in claim 6 wherein: said container has an internal conical surface adjacent to said mouth portion; said hollow cylinder is imperforate, and said annular outer end forms a seal with said conical surface whereby said cap tightly seals said container against contaminants when said locking elements are engaged.

Claim 9

A safety package comprising: a container haviNg a mouth portion with an annular rim, and having an internal conical surface adjacent to said mouth portion; a cap having a base with a peripheral flange projecting axially therefrom for receiving said mouth portion; interengageable locking elements on the outer wall of the mouth of the container and inner wall of the flange of the cap, the cap locking elements being spaced peripherally from each other and engageable with and disengageable from the container locking elements by combined axial and rotative motion of the cap relative to the container; a resilient flexible member joined to the base of the cap, having a hollow, imperforate, annular wall extending axially therefrom and terminating in an outer annular free end; the inner end of said annular wall at the juncture with the base having a diameter at least as large as that of the outer annular free end; said outer annular end being engageable with said conical surface to exert a biasing force in an axial direction between the cap and container when the locking elements are engaged; and said outer annular end engaging said conical surface in sealing relation when the locking elements are engaged, whereby said cap defines an effective liquid tight and airtight seal with the mouth of said container.

Claim 10

A safety package comprising: a container haviNg a mouth portion with an annular rim, and having an internal conical surface adjacent to said mouth portion; a cap having a base with a peripheral flange projecting axially therefrom for receiving said mouth portion; interengageable locking elements on the outer wall of the mouth of the container and inner wall of the flange of the cap, the cap locking elements being spaced peripherally from each other and engageable with and disengageable from the container locking elements by combined axial and rotative motion of the cap relative to the container; a resilient flexible member joined to the base of the cap, having a hollow, imperforate, annular wall extending axially therefrom and terminating in an outer annular free end; the inner end of said annular wall at the juncture with the base having a diameter at least as large as that of the outer annular free end; said outer annular end being engageable with said conical surface to exert a biasing force in an axial direction between the cap and container when the locking elements are engaged; and said outer annular end engaging said conical surface in sealing relation when the locking elements are engaged, whereby said cap defines an effective liquid tight and airtight seal with the mouth of said container.

Claim 11

A safety package as claimed in claim 8 wherein: said annular wall is dimensioned that said outer annular end is deflected inwardly by said conical surface, when said locking elements are engaged, to exert said biasing force and to effect said sealing.