US4325490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-detachable ring pull opening device for beverage cans
Assignee: Continental Group Inc
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Filing: 1980-10-16
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Granted: 1982-04-20
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Expires: 2000-10-16
Abstract
Abstract An easy opening container panel wherein a removable panel portion is primarily defined by a line of weakness or a score line. The line of weakness has a predetermined starting portion which is defined by a fracture in the residual of the container panel. The fracturing of the residual as opposed to a shearing thereof has the advantages of the elimination of the rapidly dulling lance required to effect the usual puncturing and at the same time the jagged edges resulting from the fracturing provide a mechanical interlock so that there is only a minimal weakening of the container panel over and above that provided by the score line.
Inventors
- 👤 Roger N. Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:35
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4012
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
An easy opening container assembly comprising a container panel, a line of weakness in said container panel defining a removable panel portion, said line of weakness having a starting portion; the improvement residing in said container panel being fractured along said line of weakness starting portion, said fractured starting portion including jagged edges on said container panel and said removable panel portion disposed in mechanical interlocked relation, an opening tab, said opening tab including a body portion overlying said removable panel portion and being releasably sealed to said container panel surrounding said line of weakness and permanently secured to said removable panel portion radially outwardly of said removable panel portion, said tab including a grip portion extending from said body portion adjacent said line of weakness starting portion, and said body portion having a terminal part permanently bonded to said container panel remote from said grip portion.
Claim 2
Dependent Claim
147 words
An easy opening container assembly comprising a container panel, a line of weakness in said container panel defining a removable panel portion, said line of weakness having a starting portion; the improvement residing in said container panel being fractured along said line of weakness starting portion, said fractured starting portion including jagged edges on said container panel and said removable panel portion disposed in mechanical interlocked relation, an opening tab, said opening tab including a body portion overlying said removable panel portion and being releasably sealed to said container panel surrounding said line of weakness and permanently secured to said removable panel portion radially outwardly of said removable panel portion, said tab including a grip portion extending from said body portion adjacent said line of weakness starting portion, and said body portion having a terminal part permanently bonded to said container panel remote from said grip portion.
Claim 3
Dependent Claim
35 words
A container assembly according to claim 1 wherein said removable panel portion is generally teardrop in outline and includes a large end and a small end, and said starting portion being at said small end.
Claim 4
Dependent Claim
78 words
A container assembly according to claim 1 wherein said container panel is an end panel of an end unit formed to a container body by an upstanding seam, said grip portion is joined to said body portion along a fold line; and the relative dimensions of said end panel and said tab body portion being one wherein when said container is opened, said fold line will overlie said seam and said opening tab will interlock with said seam.
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) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |