US3713530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display carton with dust flap locking construction
Assignee: Weyerhaeuser Co
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Filing: 1971-01-25
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Granted: 1973-01-30
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Expires: 1991-01-25
Abstract
Abstract A display carton has article holding panels at each end, and open front panels to allow access to the article. The front panels may extend behind the article, and also maintain certain holding panels in place. The unsupported front edges of the side walls are prevented from bowing outwardly by locking the dust flaps together. The dust flaps overlap. A locking tab on a first dust flap is folded back around the second dust flap, and an outwardly extending detent on the second dust flap prevents the tab from slipping off the second flap.
Inventors
- 👤 J Hanko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:15
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/44; B65D5/50; B65D5/5002; B65D5/5007; B65D5/5009
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
117 words
In a display carton having a front wall which is open for the display of an article and adjacent side walls having front corners which may bow outwardly, means for preventing such bowing comprising dust flaps hingedly attached to each of said side panels and overlapping centrally of the carton, the front edge of each of said dust flaps being undercut, one of said dust flaps having a tab extending toward said front wall on its outer free end, said tab being folded back around the other of said dust flaps, said other dust flap having a detent extending toward said front wall on its outer free end preventing said tab from sliding from said other flap.
Claim 2
Dependent Claim
117 words
In a display carton having a front wall which is open for the display of an article and adjacent side walls having front corners which may bow outwardly, means for preventing such bowing comprising dust flaps hingedly attached to each of said side panels and overlapping centrally of the carton, the front edge of each of said dust flaps being undercut, one of said dust flaps having a tab extending toward said front wall on its outer free end, said tab being folded back around the other of said dust flaps, said other dust flap having a detent extending toward said front wall on its outer free end preventing said tab from sliding from said other flap.
Claim 3
Dependent Claim
117 words
In a display carton having a front wall which is open for the display of an article and adjacent side walls having front corners which may bow outwardly, means for preventing such bowing comprising dust flaps hingedly attached to each of said side panels and overlapping centrally of the carton, the front edge of each of said dust flaps being undercut, one of said dust flaps having a tab extending toward said front wall on its outer free end, said tab being folded back around the other of said dust flaps, said other dust flap having a detent extending toward said front wall on its outer free end preventing said tab from sliding from said other flap.
Claim 4
Dependent Claim
117 words
In a display carton having a front wall which is open for the display of an article and adjacent side walls having front corners which may bow outwardly, means for preventing such bowing comprising dust flaps hingedly attached to each of said side panels and overlapping centrally of the carton, the front edge of each of said dust flaps being undercut, one of said dust flaps having a tab extending toward said front wall on its outer free end, said tab being folded back around the other of said dust flaps, said other dust flap having a detent extending toward said front wall on its outer free end preventing said tab from sliding from said other flap.
Claim 5
Dependent Claim
17 words
The carton of claim 1 in which said detent does not extend forwardly of said front panel.
Claim 6
Dependent Claim
43 words
A carton of claim 2 having a closure panel overlying Said dust flaps and an article holding panel folded into said carton from the front edge of said closure panel, said article holding panel having a free edge contoured to hold an article.
Claim 7
Dependent Claim
18 words
A carton of claim 3 in which said front panel is a pair of inwardly extending bevel panels.
Claim 8
Dependent Claim
17 words
A carton of claim 3 in which the other end of said carton has article holding means.
Claim 9
Dependent Claim
144 words
A blank for a display carton having a front wall which is open for the display of an article, and adjacent sidewalls having front corners which may bow outwardly, means for preventing such bowing comprising dust flaps attached to said side panels by score lines, the edge of each of said flaps facing said front panel being undercut, one of said dust flaps having a tab extending from said edge, the other of said dust flaps having a detent extending from said edge, said tab and said detent each having an inner edge on the side toward the score line attaching its dust flap to said side panel, said inner edge intersecting said undercut edge at a point, the combined length of said dust flaps between said score lines and said intersection points being at least equal to the width of said front panel.
Claim 10
Dependent Claim
144 words
A blank for a display carton having a front wall which is open for the display of an article, and adjacent sidewalls having front corners which may bow outwardly, means for preventing such bowing comprising dust flaps attached to said side panels by score lines, the edge of each of said flaps facing said front panel being undercut, one of said dust flaps having a tab extending from said edge, the other of said dust flaps having a detent extending from said edge, said tab and said detent each having an inner edge on the side toward the score line attaching its dust flap to said side panel, said inner edge intersecting said undercut edge at a point, the combined length of said dust flaps between said score lines and said intersection points being at least equal to the width of said front panel.
Claim 11
Dependent Claim
19 words
The blank of claim 6 in which there is a score line between said tab and its dust flap.
Claim 12
Dependent Claim
25 words
The blank of claim 6 in which there is a back panel and a closure panel joined to said back panel by a score line.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |