Patent US3591037A successfully refreshed from Google Patents.
US3591037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container with removable panel portion
Assignee: Alcoa Corp
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Filing: 1969-02-24
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Granted: 1971-07-06
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Expires: 1989-02-24
Abstract
Abstract A container having a removable panel portion in one of its walls defined by a score line around the periphery of such portion and having a pull tab attached to the removable portion at its starting end and a plurality of parallel ribs downwardly embossed in the removable portion adjacent its starting end substantially parallel to a line tangent to the score line at such starting end, and additional parallel ribs downwardly embossed in the removable portion adjacent its terminal end substantially normal to a line tangent to the score line at such terminal end.
Inventors
- 👤 Howard Dale Schrecker
- 👤 Robert Edwin Heffner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:47
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4011
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
155 words
In a generally rectangular container panel of deformable sheet material and having a removable portion therein defined by a line of weakness around the periphery thereof, said portion having a starting end and a terminal end, and having a tab disposed thereover and attached thereto at said starting end for severance of said portion, the improvement comprising said tab being attached to the starting end of the removable portion in a rounded corner thereof closely adjacent the line of weakness, and further including means in said removable portion for reinforcing the same across and adjacent its starting end substantially parallel to a line tangent to said line of weakness at the starting end and interiorly of the area of attachment of said tab to said portion, and means in said removable portion for reinforcing the same adjacent its terminal end substantially normal to a line tangent to the line of weakness at said terminal end.
Claim 2
Dependent Claim
155 words
In a generally rectangular container panel of deformable sheet material and having a removable portion therein defined by a line of weakness around the periphery thereof, said portion having a starting end and a terminal end, and having a tab disposed thereover and attached thereto at said starting end for severance of said portion, the improvement comprising said tab being attached to the starting end of the removable portion in a rounded corner thereof closely adjacent the line of weakness, and further including means in said removable portion for reinforcing the same across and adjacent its starting end substantially parallel to a line tangent to said line of weakness at the starting end and interiorly of the area of attachment of said tab to said portion, and means in said removable portion for reinforcing the same adjacent its terminal end substantially normal to a line tangent to the line of weakness at said terminal end.
Claim 3
Dependent Claim
37 words
A container panel as set forth in claim 1 in which said means for reinforcing the removable portion adjacent its starting end comprises at least three parallel ribs embossed in the starting end of said removable portion.
Claim 4
Dependent Claim
19 words
A container panel as set forth in claim 2 in which said ribs are downwardly embossed in said portion.
Claim 5
Dependent Claim
25 words
A container panel as set forth in claim 1 in which sheet material has a thickness in the range of 0.007 inch to 0.012 inch.
Claim 6
Dependent Claim
43 words
A container panel as set forth in claim 1 in which said tab has a nose end with an outer edge substantially aligned with the line of weakness along said rounded corner for acting on said removable portion along said line of weakness.
Claim 7
Dependent Claim
36 words
A container panel as set forth in claim 1 in which said means for reinforcing the removable portion adjacent its terminal end comprises at least three ribs embossed in the removable portion adjacent said terminal end.
Claim 8
Dependent Claim
25 words
A container panel as set forth in claim 6 in which the ribs adjacent the terminal end of the removable portion are downwardly embossed therein.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |