US3576290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag in a box for frozen eggs or the like
Assignee: Union Camp Corp
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Filing: 1969-08-01
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Granted: 1971-04-27
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Expires: 1989-08-01
Abstract
Abstract This container is formed of a paperboard or corrugated box in which is embodied a tough, thermoplastic, heat-sealed liner bag, particularly useful for shipping frozen eggs or like perishable commodities. The preferred material of the liner bag consists of ethylene-vinyl acetate copolymer. The liner bag is made of a sheet folded to form a gusseted bottom and sealed along the side edges to form a bag with a full opening at the top. The container has median fold lines in opposed sides and top and bottom flaps hinged thereto. The top flaps are formed with V-cut portions which overlie each other in the assembled box to form a keyhole slot. The liner bag is detachably secured within the container and to the flaps by an adhesive pattern in small spots by a weak bond, whereby, when the container and flaps are in the erected position, the top portion of the bag is pulled open for filling. After filling, the top of the bag is pulled from the flaps and gathered to close the bag. The closed and gathered top is threaded through the keyhole slot in the top flaps which overlap to hold the closed bag top in place. The bottom flaps of the container may be cut away to form tongue and groove portions to provide an interlocking bottom closure.
Inventors
- 👤 Joseph Marchisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:16
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/02; B65D5/10; B65D5/103; B65D5/42; B65D5/56; B65D5/60; B65D5/603; B65D5/606
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
258 words
A collapsed shipping container comprising: a quadrilateral box having a bottom, hinged top flaps and median fold lines traversing two opposed sides of the box and adjacent top flaps of the two opposed sides; an open top, bottom gusseted bag lying in flat condition between said median fold lines within the collapsed box; adhesive spots to secure the sides of the glat bag to inner surfaces of the box; the two hingedly secured top flaps with median fold lines being each formed with a V-cut portion at the top edge of the fold line, the two V-cut portions coming together when said flaps are folded inwardly to form a keyhole slot which is adapted to retain the gathered top of the bag when the gathered top is threaded therethrough; said two other top flaps adjacent the two opposite sides projecting from said other two sides to fold inwardly to seal said top; and, a pair of breakaway adhesive spots securing each side of the top of the bag to top flaps of the box adjacent the median fold lines, which spots hold the top edges of the open bag in spaced apart relation when the box is erected in open position, one of said two other top flaps being provided with a tongue and the other being provided with a rectangular slot portion adjacent the upper edge, said tongue fitting into said rectangular slot to close the box after the top of the bag has been pulled away from the breakaway adhesive spots on said other top flaps.
Claim 2
Dependent Claim
258 words
A collapsed shipping container comprising: a quadrilateral box having a bottom, hinged top flaps and median fold lines traversing two opposed sides of the box and adjacent top flaps of the two opposed sides; an open top, bottom gusseted bag lying in flat condition between said median fold lines within the collapsed box; adhesive spots to secure the sides of the glat bag to inner surfaces of the box; the two hingedly secured top flaps with median fold lines being each formed with a V-cut portion at the top edge of the fold line, the two V-cut portions coming together when said flaps are folded inwardly to form a keyhole slot which is adapted to retain the gathered top of the bag when the gathered top is threaded therethrough; said two other top flaps adjacent the two opposite sides projecting from said other two sides to fold inwardly to seal said top; and, a pair of breakaway adhesive spots securing each side of the top of the bag to top flaps of the box adjacent the median fold lines, which spots hold the top edges of the open bag in spaced apart relation when the box is erected in open position, one of said two other top flaps being provided with a tongue and the other being provided with a rectangular slot portion adjacent the upper edge, said tongue fitting into said rectangular slot to close the box after the top of the bag has been pulled away from the breakaway adhesive spots on said other top flaps.
Claim 3
Dependent Claim
168 words
A collapsed shipping container comprising: a quadrilateral box having hinged top flaps and hinged bottom flaps and median fold lines traversing two opposed sides of the box and their adjacent top and bottom flaps; an open top bag lying in flat condition between said median fold lines within the collapsed box, said flat bag having a gusseted bottom; adhesive spots to secure the flat bag to the inside of the box, said adhesive spots being adapted to break away to permit separation of the bag from the box; the two hingedly secured top flaps with median fold lines being each formed with a V-cut portion at the top edge of the fold line, the two V-cut portions coming together when said flaps are folded inwardly to form a keyhole slot which is adapted to retain the gathered top of the bag when the gathered top is threaded therethrough; and said other two adjacent top flaps projecting from said other two sides to fold inwardly to seal said top.
Claim 4
Dependent Claim
168 words
A collapsed shipping container comprising: a quadrilateral box having hinged top flaps and hinged bottom flaps and median fold lines traversing two opposed sides of the box and their adjacent top and bottom flaps; an open top bag lying in flat condition between said median fold lines within the collapsed box, said flat bag having a gusseted bottom; adhesive spots to secure the flat bag to the inside of the box, said adhesive spots being adapted to break away to permit separation of the bag from the box; the two hingedly secured top flaps with median fold lines being each formed with a V-cut portion at the top edge of the fold line, the two V-cut portions coming together when said flaps are folded inwardly to form a keyhole slot which is adapted to retain the gathered top of the bag when the gathered top is threaded therethrough; and said other two adjacent top flaps projecting from said other two sides to fold inwardly to seal said top.
Claim 5
Dependent Claim
62 words
A collapsed shipping container as claimed in claim 1, wherein the bottom of said container is interlocked and is formed by two pairs of opposed bottom projecting flaps, one of said pairs projecting from said sides with the median fold lines being formed with trapezoidal cutout sections and the other of said pairs being formed with tongue and groove bottom edges, respectively.
Claim 6
Dependent Claim
19 words
A collapsed shipping container as claimed in claim 1, wherein said gusseted bag is formed of ethylene-vinyl acetate copolymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |