Patent US4747536A successfully refreshed from Google Patents.
US4747536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carton with gussetted cover panels and a handle
Assignee: WestRock RKT Co
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Filing: 1986-04-10
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Granted: 1988-05-31
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Expires: 2006-04-10
Abstract
Abstract A top-loading carton of paperboard or the like is constructed from a one-piece blank and enclosed by gussetted top panels. The top panels end in handles which define locking tabs which are received in slots in the side walls of the carton. The gusset panels urge the locking tabs into locking engagement with the slots. The end walls and top panels attached thereto taper outwardly from bottom to top of the carton, causing the side walls to bow outwardly when the top panels are closed, enhancing the appearance of the carton. The carton can be initially assembled into a collapsed flattened form from which it can be easily erected. An automatic bottom closure is provided.
Inventors
- 👤 Henry Wischusen, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:28
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/44; B65D5/46; B65D5/46072; B65D5/46088; B65D5/46096; B65D5/46112
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
In a carton including a side wall, an end wall foldably connected to said side wall, and a top panel foldably connected along a first edge thereof to an upper edge of said end wall, said top panel being foldable to at least partially enclose said carton, the improvement comprising: a locking tab extending from said top panel; said side wall defining a slot adjacent to an upper edge thereof for receiving said locking tab when said top panel is folded to at least partially enclose said carton; and means connected to said top panel and said side wall for urging said top panel upwardly and positively engaging said locking tab with said slot.
Claim 2
Dependent Claim
114 words
In a carton including a side wall, an end wall foldably connected to said side wall, and a top panel foldably connected along a first edge thereof to an upper edge of said end wall, said top panel being foldable to at least partially enclose said carton, the improvement comprising: a locking tab extending from said top panel; said side wall defining a slot adjacent to an upper edge thereof for receiving said locking tab when said top panel is folded to at least partially enclose said carton; and means connected to said top panel and said side wall for urging said top panel upwardly and positively engaging said locking tab with said slot.
Claim 3
Dependent Claim
77 words
The carton of claim 1, wherein said means for urging said top panel comprises: an upper gusset panel foldably connected to a second edge of said top panel, and a lower gusset panel foldably connected to said upper edge of said side wall, said upper and lower gusset panels being foldably connected by a score line positioned to permit said gusset panels to collapse when said top panel is folded to at least partially enclose said carton.
Claim 4
Dependent Claim
127 words
A carton comprising; a side wall; an end wall foldably connected to said side wall; a top panel foldably connected along a first edge thereof to an upper edge of said end wall, said top panel being foldable to at least partially enclose said carton; an upper gusset panel foldably connected to said top panel and a lower gusset panel foldably connected to said side wall, said upper and lower gusset panels being joined by a score line extending diagonally from the intersection of said top panel, said side wall, and said end wall; and a locking tab formed in said top panel; said side wall defining a slot for receiving said locking tab when said top panel is folded to at least partially enclose said carton.
Claim 5
Dependent Claim
127 words
A carton comprising; a side wall; an end wall foldably connected to said side wall; a top panel foldably connected along a first edge thereof to an upper edge of said end wall, said top panel being foldable to at least partially enclose said carton; an upper gusset panel foldably connected to said top panel and a lower gusset panel foldably connected to said side wall, said upper and lower gusset panels being joined by a score line extending diagonally from the intersection of said top panel, said side wall, and said end wall; and a locking tab formed in said top panel; said side wall defining a slot for receiving said locking tab when said top panel is folded to at least partially enclose said carton.
Claim 6
Dependent Claim
45 words
The carton of claim 3, wherein said locking tab defines an upwardly facing recess having a width approximately equal to the thickness of said side wall, such that said recess engages said side wall, thereby discouraging disengagement of said locking tab from said side wall.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |