Patent US783133A successfully refreshed from Google Patents.
US3580480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock for egg carton cover
Assignee: Continental Can Co Inc
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Filing: 1968-01-19
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Granted: 1971-05-25
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Expires: 1988-01-19
Abstract
Abstract This invention is directed to an egg or similar type carton which includes a carton body and a pair of covers for opening and closing an end of the body opposite a bottom wall thereof. Each of the covers includes a pair of locking panels which are normally disposed in side-by-side relationship along a centerline of the carton body in a closed position of the covers. The locking panels are received in slots of upwardly directed posts, and bosses are formed from the material of the locking panels for engagement beneath associated edges of the slots to interlock the covers therewith in the closed position.
Inventors
- 👤 Richard P French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:57
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/30; B65D85/32; B65D85/324
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
181 words
A carton comprising a carton body having a bottom wall, a pair of sidewalls and a pair of end walls, a pair of covers for opening and closing an end of said carton body opposite said bottom wall, each of said covers including a single ply locking panel disposed along a centerline of said carton body in a closed position of said covers with said locking panels being in generally side-by-side relationship in said closed position, said locking panels each having a free terminal edge, wall means disposed along the centerline of said carton body, slot means formed in said wall means and receiving said locking panel in the closed position, and means for interlockingly securing said locking panels within said slot means of said wall means in the closed position, said interlocking means being in the form of projections inboard of said terminal edges and projecting normally out of the plane of said locking panels in frictional contacting engagement with said wall means in the closed position of said carton, and said projections project toward different ones of said sidewalls.
Claim 2
Dependent Claim
181 words
A carton comprising a carton body having a bottom wall, a pair of sidewalls and a pair of end walls, a pair of covers for opening and closing an end of said carton body opposite said bottom wall, each of said covers including a single ply locking panel disposed along a centerline of said carton body in a closed position of said covers with said locking panels being in generally side-by-side relationship in said closed position, said locking panels each having a free terminal edge, wall means disposed along the centerline of said carton body, slot means formed in said wall means and receiving said locking panel in the closed position, and means for interlockingly securing said locking panels within said slot means of said wall means in the closed position, said interlocking means being in the form of projections inboard of said terminal edges and projecting normally out of the plane of said locking panels in frictional contacting engagement with said wall means in the closed position of said carton, and said projections project toward different ones of said sidewalls.
Claim 3
Dependent Claim
40 words
The carton as defined in claim 1 wherein said wall means is a post projecting upwardly from said bottom wall, said post has an upper terminal end wall, and said slot means are formed in said upper terminal end wall.
Claim 4
Dependent Claim
28 words
The carton as defined in claim 2 wherein said post is of a hollow construction and said slot means are formed completely through said upper terminal end wall.
Claim 5
Dependent Claim
27 words
The carton as defined in claim 1 wherein said wall means is of a hollow construction and said slot means are formed completely through said wall means.
Claim 6
Dependent Claim
13 words
The carton as defined in claim 1 wherein said projections are hollow bosses.
Claim 7
Dependent Claim
40 words
The carton as defined in claim 5 wherein said hollow bosses are positioned in transversely adjacent pairs with a boss of each pair being disposed to one side of said centerline opposite to the remaining boss of the same pair.
Claim 8
Dependent Claim
54 words
The carton as defined in claim 5 wherein said wall means is a post projecting upwardly from said bottom wall, said post has an upper terminal end wall, means defining a recess beneath said upper terminal end wall, and said hollow bosses being disposed in said recess means beneath said upper terminal end wall.
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |