US4306665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Containers having a flexible cover sealable to a rigid base
Assignee: Airflex Containers Ltd
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Filing: 1980-05-06
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Granted: 1981-12-22
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Expires: 2000-05-06
Abstract
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.
Inventors
- 👤 Christopher D. D. Hickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:42
CPC Classifications
B; B65; B65D; B65D19/00; B65D19/38; B65D19/44; Y; Y10; Y10S; Y10S277/00; Y10S277/921
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
140 words
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.
Claim 2
Dependent Claim
140 words
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.
Claim 3
Dependent Claim
17 words
A container as claimed in claim 1 wherein the inflatable tube is formed integrally with the cover.
Claim 4
Dependent Claim
16 words
A container as claimed in claim 1 wherein the inflatable tube is secured to the cover.
Claim 5
Dependent Claim
33 words
A container as claimed in claim 1 wherein the tube is separate from the cover, the peripheral edge of the cover being put between the inflatable tube and the edge of the plate.
Claim 6
Dependent Claim
37 words
A container as claimed in claim 1 and adapted to be evacuated wherein the plate is air-impermeable and the cover is air-impermeable and wherein an air outlet valve is provided in either the cover or the plate.
Claim 7
Dependent Claim
15 words
A container as claimed in claim 1 wherein said plate is fixed to the support.
Claim 8
Dependent Claim
15 words
A container as claimed in claim 1 wherein the support is formed as a pallet.
Claim 9
Dependent Claim
35 words
A container as claimed in claim 1 wherein the support member comprises a plate-supporting portion surrounded by a groove or channel, from the outer edge of which groove or channel said pressure wall extends upwardly.
Claim 10
Dependent Claim
42 words
A container as claimed in claim 1 and having the inflatable tube separate from the cover sheet, wherein the pressure wall is shaped to form a holder for the inflatable tube or is shaped to receive a holder for the inflatable tube.
Claim 11
Dependent Claim
14 words
A container as claimed in claim 1 wherein said plate is a flat plate.
Claim 12
Dependent Claim
13 words
A container as claimed in claim 1 wherein said plate is of dished-shape.
Claim 13
Dependent Claim
28 words
A container as claimed in claim 1 wherein the inflatable tube is shaped so that the tube when inflated tends to embrace the peripheral portion of the plate.
References Cited (Backward Citations)
US3221921A
Cited
US3240038A
Cited
US3501868A
Cited
US4114668A
Cited
US4140237A
Cited
US4121732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |