US4474324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescoping carton
Assignee: WESTVACO Corp A CORP OF
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Filing: 1983-02-24
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Granted: 1984-10-02
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Expires: 2003-02-24
Abstract
Abstract A telescoping carton particularly adapted for packaging food products is prepared from a pair of combination tray/cover components made from identical blanks of paperboard or the like. Each blank is folded and glued by the manufacturer and shipped to the user in its flattened knocked down condition. The combination tray/cover components have a plurality of side walls and preferably an auto lock bottom. The side walls are joined to one another along score lines to form corners, and the side walls at each corner are provided with a pair of converging score lines which extend from points along the edges of each adjacent side wall toward the corner formed by the adjacent side walls. The corner score lines and the adjacent converging score lines in each side wall form connected, tapered panels. When used as a tray, these panels are pinched together and form outwardly folded corners to effectively reduce the size of the top of the tray. When used as a cover, these same panels are left undisturbed thereby permitting the cover component to telescope over the tray component.
Inventors
- 👤 Hampton E. Forbes, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/64; B65D5/68; B65D5/02; B65D5/10; Y; Y10; Y10S; Y10S229/00; Y10S229/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
A tray and cover, each formed from an indentical blank of paperboard or the like and each having four corners formed by first fold lines connecting adjacent side walls, an additional pair of score lines at each corner extending from points along the edge of each adjacent side wall and converging toward the corner formed by the adjacent side walls, said converging score lines and corner score lines forming connected, tapered panels at each corner, said tapered panels being pinched together to produce outwardly folded corners and inwardly inclined side walls to effectively reduce the external size of the tray component whereas the same panels are left undisturbed in the cover component.
Claim 2
Dependent Claim
112 words
A tray and cover, each formed from an indentical blank of paperboard or the like and each having four corners formed by first fold lines connecting adjacent side walls, an additional pair of score lines at each corner extending from points along the edge of each adjacent side wall and converging toward the corner formed by the adjacent side walls, said converging score lines and corner score lines forming connected, tapered panels at each corner, said tapered panels being pinched together to produce outwardly folded corners and inwardly inclined side walls to effectively reduce the external size of the tray component whereas the same panels are left undisturbed in the cover component.
Claim 3
Dependent Claim
34 words
The tray and cover of claim 1 wherein the additional paired score lines at each corner of each component are oriented in substantially the same angular relation with respect to the corner score lines.
Claim 4
Dependent Claim
16 words
The tray and cover of claim 2 wherein each component has an auto lock bottom structure.
Claim 5
Dependent Claim
138 words
A telescoping carton comprising a tray component and cover component each having the same cross sectional shape, said tray and cover each being prepared from identical blanks of paperboard or the like and having the same number of corners, said corners being formed by score lines connecting adjacent side walls together, a pair of converging score lines at each corner extending from points along the edge of each adjacent side wall toward the corner formed by the adjacent side walls said converging score lines and corner score lines forming connected, tapered panels at each corner, said tapered panels being pinched together to produce outwardly folded corners to effectively reduce the external size of the tray component whereas the same panels are left undisturbed in the cover component thereby permitting the cover component to telescope over the tray component.
Claim 6
Dependent Claim
138 words
A telescoping carton comprising a tray component and cover component each having the same cross sectional shape, said tray and cover each being prepared from identical blanks of paperboard or the like and having the same number of corners, said corners being formed by score lines connecting adjacent side walls together, a pair of converging score lines at each corner extending from points along the edge of each adjacent side wall toward the corner formed by the adjacent side walls said converging score lines and corner score lines forming connected, tapered panels at each corner, said tapered panels being pinched together to produce outwardly folded corners to effectively reduce the external size of the tray component whereas the same panels are left undisturbed in the cover component thereby permitting the cover component to telescope over the tray component.
Claim 7
Dependent Claim
31 words
The carton of claim 4 wherein each component is provided with an auto lock bottom so that said folded and glued blanks may be stored in a knocked down, flattened condition.
References Cited (Backward Citations)
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US2251283A
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US2868429A
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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) | 1987-10-02 | 1988-04-02 | 1988-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-02 | 1992-04-02 | 1992-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-02 | 1996-04-02 | 1996-10-02 | $7700.00 | Window Closed / Lapsed |