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US3780932A Expired / Lapsed US ⏱️ 0.0 years remaining

One piece reclosable carton

Assignee: WestRock Minnesota Corp
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Filing: 1972-03-29
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Granted: 1973-12-25
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Expires: 1992-03-29
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Abstract

Abstract An open topped rectangular carton body is connected to a sleeve by pairs of flaps connecting the upper edges of the carton walls to the upper edges of the sleeve. In open position the flaps are substantially coplanar with the carton walls to which they are hinged. In closed position the flaps of each pair fold substantially into face contact and at right angles to the walls, closing the top of the carton body when the sleeve is telescoped onto the carton body.

Inventors

  • 👤 E Mclaren
  • 👤 R Lund

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 17:43
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/02; B65D5/0218

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 339 words
A carton closure for use in combination with an open topped rectangular carton body having a closed bottom end and rectangularly arranged side walls, including: a sleeve adapted to telescope onto the upper end of said carton body, a first flap hingedly connected to the upper edge of each of the carton side walls, a second flap foldably connected to each said first hinge flap along a fold line parallel to the hinge line connecting said first side wall to its adjoining side wall, hinge lines connecting each said second flap to an upper edge of said sleeve, said first and second flaps being of substantially equal length and foldable from a position substantially coplanar with the walls to which the flaps are connected to a position in which the first and second flap of each pair substantially in parallel face contact when said sleeve is in carton body encircling position; said flaps extending inwardly to form a closure for said carton body, said first and second flaps connected to two opposed side walls being of generally rectangular form, and the first and second flaps hingedly connected to the remaining opposed side walls are of generally trapezoidal shape with the longer parallel edges connected to the carton body and upper sleeve, respectively, and the shorter parallel edges are connected along said fold line, said fold lines connecting said generally rectangular first and second flaps terminating in spaced relation when said first and second flaps are substantially in face contact, notches extending into said fold line connecting the first and second flaps of trapezoidal shape, said fold lines connecting said generally rectangular first and second flaps terminating in spaced relation when said first and second flaps are substantially in face contact, and the distance between said notches is substantially equal to the distance between said fold lines, said notches accommodating portions of said first and second generally rectangular flaps adjoining said fold lines, and notches extending into said carton from the upper edges thereof at the juncture between said walls.
Claim 2
Dependent Claim 339 words
A carton closure for use in combination with an open topped rectangular carton body having a closed bottom end and rectangularly arranged side walls, including: a sleeve adapted to telescope onto the upper end of said carton body, a first flap hingedly connected to the upper edge of each of the carton side walls, a second flap foldably connected to each said first hinge flap along a fold line parallel to the hinge line connecting said first side wall to its adjoining side wall, hinge lines connecting each said second flap to an upper edge of said sleeve, said first and second flaps being of substantially equal length and foldable from a position substantially coplanar with the walls to which the flaps are connected to a position in which the first and second flap of each pair substantially in parallel face contact when said sleeve is in carton body encircling position; said flaps extending inwardly to form a closure for said carton body, said first and second flaps connected to two opposed side walls being of generally rectangular form, and the first and second flaps hingedly connected to the remaining opposed side walls are of generally trapezoidal shape with the longer parallel edges connected to the carton body and upper sleeve, respectively, and the shorter parallel edges are connected along said fold line, said fold lines connecting said generally rectangular first and second flaps terminating in spaced relation when said first and second flaps are substantially in face contact, notches extending into said fold line connecting the first and second flaps of trapezoidal shape, said fold lines connecting said generally rectangular first and second flaps terminating in spaced relation when said first and second flaps are substantially in face contact, and the distance between said notches is substantially equal to the distance between said fold lines, said notches accommodating portions of said first and second generally rectangular flaps adjoining said fold lines, and notches extending into said carton from the upper edges thereof at the juncture between said walls.

References Cited (Backward Citations)

US2713894A Cited
US2715509A Cited
US2843808A Cited
US3254825A Cited
US3329346A Cited
US3371844A Cited
US3278108A Cited
US3430840A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-24 1977-06-25 1977-12-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-24 1981-06-25 1981-12-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-24 1985-06-25 1985-12-25 $7700.00 Window Closed / Lapsed

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