Patent US4212409A successfully refreshed from Google Patents.
US4212409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container closure members
Assignee: Akerlund and Rausing AB
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Filing: 1979-04-09
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Granted: 1980-07-15
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Expires: 1999-04-09
Abstract
Abstract A closure member is provided for closing a container opening wherein the closure member includes a central closure panel, a circumferential rim, and a circumferential edge flange having a circumferential line of weakness about which the edge flange can be folded to abut the outer surface of the container.
Inventors
- 👤 Jan-Bertil Jeppsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:22
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/007; B65; B65D; B65D17/00; B65D17/06; B65D17/12; B65D17/14; B65D17/28; B65D17/404; B29C37/00; B29C37/0053; B29C37/0057
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
104 words
A closure member for closing a container opening, said opening being bounded by an upstanding edge of said container, said closure member being formed of plastic material and comprising a central closure panel, a circumferential rim connected to said closure panel for abutting the internal surface of said upstanding edge, a circumferential edge flange connected to said rim and having a circumferential weakened area formed therein about which the edge flange can be folded to abut the outer surface of said upstanding edge, and said edge flange having cut-out portions formed therein to permit the folded edge flange to conform to said outer surface.
Claim 2
Dependent Claim
104 words
A closure member for closing a container opening, said opening being bounded by an upstanding edge of said container, said closure member being formed of plastic material and comprising a central closure panel, a circumferential rim connected to said closure panel for abutting the internal surface of said upstanding edge, a circumferential edge flange connected to said rim and having a circumferential weakened area formed therein about which the edge flange can be folded to abut the outer surface of said upstanding edge, and said edge flange having cut-out portions formed therein to permit the folded edge flange to conform to said outer surface.
Claim 3
Dependent Claim
15 words
A closure member as claimed in claim 1 wherein said closure member is injection moulded.
Claim 4
Dependent Claim
15 words
A closure member as claimed in claim 2 wherein said material is a thermoplastics material.
Claim 5
Dependent Claim
26 words
A closure member as claimed in claim 1 wherein said edge flange is substantially planar and before folding is located substantially parallel to the closure panel.
Claim 6
Dependent Claim
26 words
A closure member as claimed in claim 1 wherein said closure panel is countersunk and wherein said rim has at least one circumferentially extending inner rib.
Claim 7
Dependent Claim
41 words
A closure member as claimed in claim 5 wherein said rim is of reduced thickness at its lower end to provide an abutment surface for resting against a rib of an underlying closure member in a stack of identical closure members.
Claim 8
Dependent Claim
26 words
A closure member as claimed in claim 1 wherein the container-abutting portion of the rim is substantially thicker than the container-abutting portion of the edge flange.
Claim 9
Dependent Claim
44 words
A closure member as claimed in claims 1, 4, 5, or 7 wherein said weakened area is a groove formed in said edge flange so that when the flange is folded, the opposed surfaces of said groove form a substantially flat and co-planar configuration.
Claim 10
Dependent Claim
49 words
A closure member as claimed in claim 8 wherein said groove has a substantially V-shaped cross-section and wherein said cut-out portions are substantially "V"-shaped notches extending into the edge flange from the outer edge thereof and wherein a thin web of plastic material is connecting said opposed groove surfaces.
Claim 11
Dependent Claim
30 words
A closure member as claimed in claim-1 further including a circumferential line of weakness for removal of the closure panel to open said container opening closed by the closure member.
Claim 12
Dependent Claim
29 words
A closure member as claimed in claim 10 wherein said circumferential line of weakness for removal of the closure panel is located between the rim and the edge flange.
Claim 13
Dependent Claim
31 words
A closure member as claimed in claim 1 further including a sealing lining which covers the bottom of the closure panel and extends beyond the inner edge of the edge flange.
Claim 14
Dependent Claim
36 words
A closure member as claimed in claim 12 wherein said edge flange has a circumferential lower rib at its outer edge to compensate for the sealing lining thickness and protect the outer edge of said lining.
Claim 15
Dependent Claim
21 words
A closure member as claimed in claim 10 wherein said circumferential line of weakness connects said closure panel and said rim.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |