Patent US4020988A successfully refreshed from Google Patents.
US4020988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carton with contoured, recessed bottom wall
Assignee: Smurfit Kappa Packaging Corp
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Filing: 1976-06-10
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Granted: 1977-05-03
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Expires: 1996-06-10
Abstract
Abstract A tubular carton is formed from paperboard and has a side wall formed from a pair of wall panels joined to each other at their edges. A bottom wall is foldably attached to a bottom edge of the sidewall. At least a portion of a fold line between the bottom wall and the side wall is curved providing contoured, recessed bottom wall when the carton is set up.
Inventors
- 👤 Michael A. Kipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:42
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
154 words
A tubular carton formed from a cut and scored blank of paperboard, or the like, and having a contoured, recessed bottom wall, said carton comprising: (a) a side wall formed from a pair of generally rectangular side wall panels having their edges secured in an overlapped relationship: (b) a bottom wall foldably secured at opposite side edges to bottom edges of said side wall panels along fold lines; (c) a first gusset panel foldably secured to said bottom wall along a fold line substantially normal to said fold lines between said bottom wall and said side wall panels; (d) a pair of second gusset panels each foldably secured along diverging fold lines to said first gusset panel and to a respective one of said side wall panels; (e) the distance between said fold lines securing said second gusset panels to said side wall panels being less than the maximum width of said bottom wall.
Claim 2
Dependent Claim
154 words
A tubular carton formed from a cut and scored blank of paperboard, or the like, and having a contoured, recessed bottom wall, said carton comprising: (a) a side wall formed from a pair of generally rectangular side wall panels having their edges secured in an overlapped relationship: (b) a bottom wall foldably secured at opposite side edges to bottom edges of said side wall panels along fold lines; (c) a first gusset panel foldably secured to said bottom wall along a fold line substantially normal to said fold lines between said bottom wall and said side wall panels; (d) a pair of second gusset panels each foldably secured along diverging fold lines to said first gusset panel and to a respective one of said side wall panels; (e) the distance between said fold lines securing said second gusset panels to said side wall panels being less than the maximum width of said bottom wall.
Claim 3
Dependent Claim
16 words
The carton as defined in claim 1, wherein said bottom wall is formed with rounded corners.
Claim 4
Dependent Claim
30 words
The carton as defined in claim 1, wherein said side wall has a taper extending upwardly and outwardly from the edge of said side wall located adjacent said bottom wall.
Claim 5
Dependent Claim
26 words
The carton as defined in claim 1, wherein said bottom wall has a plurality of support points for supporting said carton in an upright, errected position.
Claim 6
Dependent Claim
26 words
The carton as defined in claim 1, wherein said fold lines securing said bottom wall to said side wall panels are curved throughout their entire length.
Claim 7
Dependent Claim
48 words
The carton as defined in claim 1, wherein the distance between said fold lines securing said second gusset panels to said side wall panels is less than the maximum width of said bottom wall measured between the fold lines securing said bottom wall to said side wall panels.
Claim 8
Dependent Claim
170 words
A blank of paperboard cut and scored to form a tubular carton having a contoured, recessed bottom wall, said blank comprising: (a) a bottom wall forming panel; (b) a pair of side wall forming panels each foldably secured to a side edge of said bottom wall forming panel along a fold line at least a portion of which is at an oblique angle to another portion of said fold line; (c) a first triangular panel foldably secured to an end edge of said bottom wall forming panel along a fold line substantially normal to said fold lines between said bottom wall forming panel and said side wall forming panels; (d) a pair of second triangular panels each foldably secured along diverging fold lines to said first triangular panel and to a respective one of said side wall forming panels; (e) the distance between said fold lines securing said second triangular panels to the respective side wall forming panels being less than the maximum width of said bottom wall forming panel.
Claim 9
Dependent Claim
170 words
A blank of paperboard cut and scored to form a tubular carton having a contoured, recessed bottom wall, said blank comprising: (a) a bottom wall forming panel; (b) a pair of side wall forming panels each foldably secured to a side edge of said bottom wall forming panel along a fold line at least a portion of which is at an oblique angle to another portion of said fold line; (c) a first triangular panel foldably secured to an end edge of said bottom wall forming panel along a fold line substantially normal to said fold lines between said bottom wall forming panel and said side wall forming panels; (d) a pair of second triangular panels each foldably secured along diverging fold lines to said first triangular panel and to a respective one of said side wall forming panels; (e) the distance between said fold lines securing said second triangular panels to the respective side wall forming panels being less than the maximum width of said bottom wall forming panel.
References Cited (Backward Citations)
US2147087A
Cited
US2134321A
Cited
US2240599A
Cited
US2232088A
Cited
US2323287A
Cited
US2385898A
Cited
US3713576A
Cited
US3743169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |