Containers having a flexible cover sealable to a rigid base
AssigneeAirflex Containers Limited
InventorChristopher D. D. Hickey
Life of this patent
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Abstract
A container of the kind having a rigid base to which a flexible cover is sealed by means of an inflatable sealing tube is formed with a rigid support plate as part of the base, the support plate being carried on a support member having an upwardly-extending pressure wall surrounding and facing inwardly towards the edge of the plate. The pressure wall extends upwardly from below the level of the edge of the plate to above that level and the sealing tube is located between the edge of the plate and the pressure wall so that when the tube is inflated the edge of the plate forms a localized pressure region along the length of the tube.
Claims12
A container having a rigid base with a flexible cover and an inflatable tube for sealing the cover to the base, wherein the base comprises a rigid support member and an impermeable load-supporting plate carried by said support member, the support member having an upwardly-extending pressure wall surrounding and facing inwardly towards the edge of the plate, which pressure wall over its whole length has a depth such that it extends from below the level of the plate to above the level of the plate so that the inflatable tube of the seal may be put between the edge of the plate and the pressure wall to have portions lying both above and below said plate, whereby when the tube is inflated the edge of the plate forms a localised pressure region extending along the whole length of the seal.
Dependencies are inferred from the claim text.