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US3578154A Expired / Lapsed US ⏱️ 0.0 years remaining

Shadow box with locking dust flaps

Assignee: Union Camp Corp
•
Filing: 1969-04-07
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Granted: 1971-05-11
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Expires: 1989-04-07
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Abstract

Abstract A carton is formed from a precut and prescored blank to provide a hollow body having front and rear panels joined by side panels, and ends closed by interlocking flap means. One end, usually the top, is closed by two infolded dust flaps and an overlying tuckin flap means. Each of the dust flaps has a recess cut into the edge facing the front panel so as to form inner and outer tabs along that edge. The tuck-in portion of the overlying flap has a recess or opening cut into it to provide two tab formations. When the flaps are infolded to close the carton, each of the tab formations on the tuck-in portion fits into the recess of its associated dust flap. A locking slit is formed at each end of the score line which hinges the tuck-in portion of the overlying flap, which slits interlock with the outer tab on each of the dust flaps upon full insertion of the tuck-in portion. The erected carton may be converted into a shadow box for displaying the merchandise by separating the front panel into two portions and folding such portions and the top locked flap means inwardly, whereby a mitered frame effect is formed in back of the displayed merchandise.

Inventors

  • 👤 Homer Martelli

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 18:47
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/44; B65D5/50; B65D5/5002; B65D5/5007; B65D5/5009

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 245 words
In a display carton having front, rear, top and bottom panels and side panels joined to the front and rear panels, said front panel having inwardly folding flap portions separated by a vertical cut line which extends from the top of the front panel down to a transverse cut line spaced from the bottom of the front panel, said flap portions folding inwardly from the side panels to frame an object which is displayed in said carton above said transverse cut line, said bottom panel including a bottom end closure to maintain the erected carton square and straight, that improvement comprising: diagonally cut top edges of said inwardly folding front panel portions; top side flaps folding inwardly along hinges from the side panels and a tuck-in flap projecting above said top panel which folds inwardly along a transverse hinge line at the top of the closed carton; said top side flaps being formed with arcuate recesses at their front edge portions defining pairs of locking tabs which assist in maintaining the top of the carton square; said top tuck-in flap defining an opening having tab means at the sides thereof which fit into said arcuate recesses in said top side flaps, whereby the infolding of said top side flaps under said top panel and the infolding of said front diagonally cut flap portions with said top tuck-in flap also folded inwardly provide a framed shadow box for the displayed object securely held in said carton.
Claim 2
Dependent Claim 245 words
In a display carton having front, rear, top and bottom panels and side panels joined to the front and rear panels, said front panel having inwardly folding flap portions separated by a vertical cut line which extends from the top of the front panel down to a transverse cut line spaced from the bottom of the front panel, said flap portions folding inwardly from the side panels to frame an object which is displayed in said carton above said transverse cut line, said bottom panel including a bottom end closure to maintain the erected carton square and straight, that improvement comprising: diagonally cut top edges of said inwardly folding front panel portions; top side flaps folding inwardly along hinges from the side panels and a tuck-in flap projecting above said top panel which folds inwardly along a transverse hinge line at the top of the closed carton; said top side flaps being formed with arcuate recesses at their front edge portions defining pairs of locking tabs which assist in maintaining the top of the carton square; said top tuck-in flap defining an opening having tab means at the sides thereof which fit into said arcuate recesses in said top side flaps, whereby the infolding of said top side flaps under said top panel and the infolding of said front diagonally cut flap portions with said top tuck-in flap also folded inwardly provide a framed shadow box for the displayed object securely held in said carton.

References Cited (Backward Citations)

US2116652A Cited
US2426865A Cited
US3029998A Cited
US3270867A Cited
US3292777A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-05-10 1974-11-09 1975-05-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-10 1978-11-09 1979-05-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-10 1982-11-09 1983-05-11 $7700.00 Window Closed / Lapsed

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