Containers

Claim 2

A closure for a sealed fluid container comprising: an elastically resilient container wall; an opening in said container wall; an elastically resilient flap member having a sealing surface and resiliency for acting to cause said surface to normally lie in intimate overlapping sealing contact with said container wall so as to close said opening; and a portion of said container wall immediately around said opening being capable of distortion to cause said sealing surface of said flap member to move away from said container wall to allow fluid to pass through said opening.

Claim 3

A closure as claimed in claim 1 including a fluid sealant between the surface of the flap member and the wall.

Claim 4

A closure as claimed in claim 1 in which the resilient flap member is part of the container wall.

Claim 5

A closure as claimed in claim 1 including two separable walls lying one against the other, one of which constitutes the resilient flap member.

Claim 6

A closure as claimed in claim 1 in combination with an enclosure of resilient plastics material for a drink, the closure closing an opening in the wall of the enclosure.

Claim 7

In combination, a container for a drink consisting of two separately formed parts joined together, one of them having an opening, and a closure as claimed in claim 1 closing and sealing the opening.

Claim 8

A container comprising a closure as claimed in claim 1 and a sleeve for giving support to the walls of the container.

Claim 9

A container as claimed in claim 7 in which the sleeve covers the opening.

Claim 10

A closure as claimed in claim 1 in which the surface of the flap member and the portion of the wall with which the latter cooperates are shaped for complemental engagement with one another.

Claim 11

A closure for a sealed container of pressurized liquid comprising: an elastically resilient container wall; an opening in said container wall; an elastically resilient flap forming a sealed interface with said wall and controlling flow from the container through said opening, a pressure differential between the internal substantially superatmospheric pressure and the absence of pressure between the sealed interface acting to prevent the flow and distortion of a part of said wall of the container adjacent the opening to move said flap permitting the flow; and a relatively non-resilient cover surrounding said wall for preventing deformation of the latter due to internal pressure in the container, but providing access to the said part of said wall.

Claim 12

A closure for a sealed container of pressurized liquid comprising: an elastically resilient container wall; an opening in said container wall; an elastically resilient flap forming a sealed interface with said wall and controlling flow from the container through said opening, a pressure differential between the internal substantially superatmospheric pressure and the absence of pressure between the sealed interface acting to prevent the flow and distortion of a part of said wall of the container adjacent the opening to move said flap permitting the flow; and a relatively non-resilient cover surrounding said wall for preventing deformation of the latter due to internal pressure in the container, but providing access to the said part of said wall.