Patent US3608811A successfully refreshed from Google Patents.
US3608811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carton blank
Assignee: KARL AXEL ARNE TORBJORN ERICSO
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Filing: 1968-09-06
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Granted: 1971-09-28
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Expires: 1988-09-06
Abstract
Abstract The invention is for a blank for a carton. The blank has score or fold lines so that the blank may be folded into a bottom panel, wall panel and a corner panel. Then, one of the wall panels is so cut as to project into the corner panel to form a locking tab. This locking tab is integral with the adjacent wall panel. In the other wall panel, adjacent to the same corner panel, there is a locking slit which is both in the corner panel and said wall panel. Upon folding the carton blank, the locking tab slips into the locking slit so as to lock the wall panels in a substantially normal position with respect to the bottom panel to form a carton for holding objects such as bakery good, meat and the like.
Inventors
- 👤 Thomas Peter Frick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:33
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/20; B65D5/30; B65D5/301; B65D5/305; B31; B31B; B31B50/00; B31B50/26; B31B50/44; B31B50/46; B31B50/48; B31B50/50; B65D5/24; B65D5/247; B31B50/60; B31B50/73; B31B50/732; B31B50/734
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A blank for a carton, preferably a cardboard carton, consisting of a flexible and breakable sheet which by means of fold and/or score lines is subdiVided at least into wall panels and a bottom panel, the lines extending outwardly from the bottom panel defining corner panels between the adjacent wall panels, characterized in that there is at each corner a locking tab which extends from the side edge of one of the wall panels adjacent the corner into the corner panel, said locking tab being integral with said wall panel, and in that there is cut at the side edge of the other wall panel adjacent the corner a locking slit which is adapted to receive the locking tab and extending into the other wall panel and the corner panel at an angle relative to the side edge of said other wall panel.
Claim 2
Dependent Claim
143 words
A blank for a carton, preferably a cardboard carton, consisting of a flexible and breakable sheet which by means of fold and/or score lines is subdiVided at least into wall panels and a bottom panel, the lines extending outwardly from the bottom panel defining corner panels between the adjacent wall panels, characterized in that there is at each corner a locking tab which extends from the side edge of one of the wall panels adjacent the corner into the corner panel, said locking tab being integral with said wall panel, and in that there is cut at the side edge of the other wall panel adjacent the corner a locking slit which is adapted to receive the locking tab and extending into the other wall panel and the corner panel at an angle relative to the side edge of said other wall panel.
Claim 3
Dependent Claim
41 words
A blank as claimed in claim 1, characterized in that the corner panels are subdivided into two part panels by means of a score line extending from the corner apex of the bottom panel to the apex of the corner panel.
Claim 4
Dependent Claim
32 words
A blank as claimed in claim 1, characterized in that the corner panel is separated from the adjacent wall panel along that edge of the corner panel which faces the locking tab.
Claim 5
Dependent Claim
188 words
A blank for a carton, preferably a cardboard carton, consisting of a flexible and breakable sheet which by means of fold and/or score lines is subdivided at least into wall panels and a bottom panel, the lines extending outwardly from the bottom panel defining corner panels between the adjacent wall panels, characterized in that there is at each corner a locking tab which extends from the side edge of one of the wall panels adjacent the corner into the corner panel, said locking tab being integral with said wall panel, and in that there is cut at the side edge of the other wall panel adjacent the corner a locking slit which is adapted to receive the locking tab and extending into the wall panel and the corner panel, characterized in that one of the corner panel parts is bounded from the upper or outer part of the adjacent wall panel by means of a score line offset from the wall panel, and from the lower or inner part of the wall panel by a score line extending in alignment with the score line bounding the bottom panel.
Claim 6
Dependent Claim
188 words
A blank for a carton, preferably a cardboard carton, consisting of a flexible and breakable sheet which by means of fold and/or score lines is subdivided at least into wall panels and a bottom panel, the lines extending outwardly from the bottom panel defining corner panels between the adjacent wall panels, characterized in that there is at each corner a locking tab which extends from the side edge of one of the wall panels adjacent the corner into the corner panel, said locking tab being integral with said wall panel, and in that there is cut at the side edge of the other wall panel adjacent the corner a locking slit which is adapted to receive the locking tab and extending into the wall panel and the corner panel, characterized in that one of the corner panel parts is bounded from the upper or outer part of the adjacent wall panel by means of a score line offset from the wall panel, and from the lower or inner part of the wall panel by a score line extending in alignment with the score line bounding the bottom panel.
Claim 7
Dependent Claim
29 words
A blank as claimed in claim 4, characterized in that the score line is offset by approximately 2 mm. from the adjacent wall panel into the corner panel part.
Claim 8
Dependent Claim
36 words
A blank as claimed in claim 4, characterized in that the locking tab extends between the offset score line and the aligned line into the corner panel part, the aligned line extending over the locking tab.
References Cited (Backward Citations)
US1736874A
Cited
US3161343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |