Patent US4211338A successfully refreshed from Google Patents.
US4211338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container closure structure
Assignee: Reynolds Metals Co
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Filing: 1979-06-11
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Granted: 1980-07-08
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Expires: 1999-06-11
Abstract
Abstract A flexible container closure, which is preferably formed of a metallic foil, is disclosed. This closure has a generally planer peripheral surface which may be sealed by either adhesive bonding or heat sealing to a container body. The closure includes an initially inwardly concave central portion which, in combination with the container walls, defines the container volume. This inwardly concave portion is capable of deformation upon increased pressure within the container to increase the volume of the container and reduce the internal pressure therein. By employing the closure structure of the present invention, the chances of leakage failure in the seal between the closure and the container body is substantially reduced.
Inventors
- 👤 Robert F. Bublitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:53
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/10; B65D77/20; B65D77/2024; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2025
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
100 words
A container closure for use on a container body having a planer sealing surface comprising a flexible sheet material having a planer peripheral sealing portion and a shaped central portion, said shaped central portion being initially concave with respect to said container body onto which said closure is to be sealed and said shaped central portion being capable of being deformed under internal pressure within said container body after sealing of said closure onto said container body without damage to the seal between said planer sealing surface of said container body and said planer peripheral sealing portion of said closure.
Claim 2
Dependent Claim
100 words
A container closure for use on a container body having a planer sealing surface comprising a flexible sheet material having a planer peripheral sealing portion and a shaped central portion, said shaped central portion being initially concave with respect to said container body onto which said closure is to be sealed and said shaped central portion being capable of being deformed under internal pressure within said container body after sealing of said closure onto said container body without damage to the seal between said planer sealing surface of said container body and said planer peripheral sealing portion of said closure.
Claim 3
Dependent Claim
12 words
The closure of claim 1 wherein said closure comprises a metallic foil.
Claim 4
Dependent Claim
11 words
The closure of claim 2 wherein said closure comprises aluminum foil.
Claim 5
Dependent Claim
13 words
The closure of claim 1 wherein said closure comprises a plastic sheet material.
Claim 6
Dependent Claim
21 words
The closure of claim 1 wherein said closure includes a heat sealable coating on said peripheral sealing portion of said closure.
Claim 7
Dependent Claim
21 words
The closure of claim 1 wherein said closure includes an adhesive bondable coating on said peripheral sealing portion of said closure.
Claim 8
Dependent Claim
18 words
The closure of claim 1 wherein said shaped central portion is shaped into a portion of a sphere.
Claim 9
Dependent Claim
15 words
The closure of claim 1 wherein said shaped central portion is shaped into a parabola.
Claim 10
Dependent Claim
107 words
In a container construction comprising a container body having a bottom wall, a side wall and a planer sealing surface and a closure sealed to said planer sealing surface of said container body, the improvement wherein said closure comprises a flexible sheet material having a planer peripheral sealing portion and a shaped central portion, said shaped central portion being initially concave with respect to said container body and said shaped central portion being capable of being deformed under internal pressure within said container construction without damage to the seal between said planer sealing surface of said container body and said planer peripheral sealing portion of said closure.
Claim 11
Dependent Claim
107 words
In a container construction comprising a container body having a bottom wall, a side wall and a planer sealing surface and a closure sealed to said planer sealing surface of said container body, the improvement wherein said closure comprises a flexible sheet material having a planer peripheral sealing portion and a shaped central portion, said shaped central portion being initially concave with respect to said container body and said shaped central portion being capable of being deformed under internal pressure within said container construction without damage to the seal between said planer sealing surface of said container body and said planer peripheral sealing portion of said closure.
Claim 12
Dependent Claim
13 words
The container construction of claim 9 wherein said closure comprises a metallic foil.
Claim 13
Dependent Claim
12 words
The container construction of claim 10 wherein said closure comprises aluminum foil.
Claim 14
Dependent Claim
14 words
The container construction of claim 9 wherein said closure comprises a plastic sheet material.
Claim 15
Dependent Claim
22 words
The container construction of claim 9 wherein said closure includes a heat sealable coating on said peripheral sealing portion of said closure.
Claim 16
Dependent Claim
22 words
The container construction of claim 9 wherein said closure includes an adhesive bondable coating on said peripheral sealing portion of said closure.
Claim 17
Dependent Claim
22 words
The container construction of claim 9 wherein said shaped central portion of said closure is shaped into a portion of a sphere.
Claim 18
Dependent Claim
19 words
The container construction of claim 9 wherein said shaped central portion of said closure is shaped into a parabola.
References Cited (Backward Citations)
US3519439A
Cited
US3850340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-08 | 1984-01-07 | 1984-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-08 | 1988-01-07 | 1988-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-08 | 1992-01-07 | 1992-07-08 | $7700.00 | Window Closed / Lapsed |