US3767110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carton with hinge latch closure
Assignee: Dolco Packaging Corp
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Filing: 1971-12-22
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Granted: 1973-10-23
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Expires: 1991-12-22
Abstract
Abstract A carton is disclosed including a pair of space-defining members, each with a closing edge and further including an integral hinge-latching structure. A tab or flap extends from one of the closing edges to pass beyond the edge of the other member, then extends normally or parallel to the edges, and is received in a locking well that is defined in the second member for mating surface engagement. Cartons are disclosed with the closure structure functioning both as a hinge and a latch.
Inventors
- 👤 W Congleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/14; B65D43/16; B65D43/162; B65D43/163; B65D43/164; B65D2251/00; B65D2251/10; B65D2251/1016; B65D2251/1025; B65D2251/1058
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
A carton comprising: a first space-defining member including a first closing edge; at least one somewhat flat flap extending from said first member at a location contiguous to said first closing edge, and including a closure holding portion and a locking portion said portions being separated by a hinge line and said locking portion defining at least one keyway; a second space-defining member including a second closinG edge for engagement with said first closing edge to define a chamber between said members, said second space-defining member defining a locking well including at least one key, for receiving said locking portion of said flap in locked surface facing engagement, whereby said keyway receives said key with said locking portion lying somewhat normal to said closure holding portion, said holding portion extending across said second closing edge to hold said space-defining members together.
Claim 2
Dependent Claim
141 words
A carton comprising: a first space-defining member including a first closing edge; at least one somewhat flat flap extending from said first member at a location contiguous to said first closing edge, and including a closure holding portion and a locking portion said portions being separated by a hinge line and said locking portion defining at least one keyway; a second space-defining member including a second closinG edge for engagement with said first closing edge to define a chamber between said members, said second space-defining member defining a locking well including at least one key, for receiving said locking portion of said flap in locked surface facing engagement, whereby said keyway receives said key with said locking portion lying somewhat normal to said closure holding portion, said holding portion extending across said second closing edge to hold said space-defining members together.
Claim 3
Dependent Claim
35 words
A carton according to claim 1 wherein said second member defines a locking well having a surface for engagably receiving said locking portion of said flap, which surface is substantially coplanar with said closing edges.
Claim 4
Dependent Claim
20 words
A carton according to claim 1 wherein said locking portion of said flap defines keyways including two opposed arcuate indentations.
Claim 5
Dependent Claim
33 words
A carton according to claim 1 wherein a section of said first edge is connected to a section of said second edge to provide a hinge between said first and second closure members.
Claim 6
Dependent Claim
13 words
A carton according to claim 1 wherein said carton comprises expanded plastic material.
Claim 7
Dependent Claim
12 words
A carton according to claim 1 wherein said carton comprises expanded polystyrene.
Claim 8
Dependent Claim
18 words
A carton according to claim 1 wherein said flap is integral and co-extensive with said first closing edge.
Claim 9
Dependent Claim
79 words
A carton according to claim 7 wherein said second member defines a locking well having a surface for engagably receiving said locking portion of said flap, which surface is substantially coplanar with said closing edges; wherein said keyway in said locking portion of said flap comprises at least one indentation and wherein said key in said second closure member comprises an extension in said locking well to matingly engage said indentation; and wherein said carton comprises expanded plastic material.
References Cited (Backward Citations)
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US3298594A
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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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |