US4221320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite including tray restrained with outer cover
Assignee: WestRock Minnesota Corp
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Filing: 1979-04-09
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Granted: 1980-09-09
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Expires: 1999-04-09
Abstract
Abstract A low cost paperboard package includes a tray with bendable flanges protected by an outer cover member. In one embodiment, a wrap-around blank comprising a generally rectangular paperboard tube protects the tray prior to use. In another embodiment, a folded carton with end wall panels protects the tray prior to use. In both embodiments, the movement of the tray within the outer cover member is restrained by the coaction of the outer cover member and the spring action of the bendable tray flanges. The distance between the side walls of the outer cover member is less than the distance between the outer edges of the tray flanges when they are fully extended. By bending the flanges downwardly, the tray can be slipped into a blank of minimal size. The friction between the tray flanges and the blank's side walls resists movement of the tray.
Inventors
- 👤 Rudolph A. Faller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:44
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/38; B65D77/00; B65D77/04; B65D77/0413; B65D77/0433
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
206 words
A package comprising: a tray having a bottom wall panel, plurality of side wall panels and a first pair of flanges respectively extending outwardly from opposite ones of said side wall panels, said flanges being bendable about fold lines at the upper edges of said side wall panels from an extended position to a tucked position, the distance between respective outer edges of said first pair of flanges being reduced when the latter are bent from said extended positions thereof to said tucked positions thereof, each of said flanges being biased to return from said tucked position thereof to said extended position thereof; and a generally rectangular outer cover member including top and bottom wall panels connected by side wall panels, the distance between at least portions of said side wall panels of the outer cover member being less than the distance between the outer edges of said flanges when the latter are in said extended position thereof, said tray being insertable into the outer cover member when the flanges are bent to said tucked position thereof, said tray being retained in the outer cover member by frictional engagement produced by outward biasing of said flanges against said side wall panels of the outer cover member.
Claim 2
Dependent Claim
206 words
A package comprising: a tray having a bottom wall panel, plurality of side wall panels and a first pair of flanges respectively extending outwardly from opposite ones of said side wall panels, said flanges being bendable about fold lines at the upper edges of said side wall panels from an extended position to a tucked position, the distance between respective outer edges of said first pair of flanges being reduced when the latter are bent from said extended positions thereof to said tucked positions thereof, each of said flanges being biased to return from said tucked position thereof to said extended position thereof; and a generally rectangular outer cover member including top and bottom wall panels connected by side wall panels, the distance between at least portions of said side wall panels of the outer cover member being less than the distance between the outer edges of said flanges when the latter are in said extended position thereof, said tray being insertable into the outer cover member when the flanges are bent to said tucked position thereof, said tray being retained in the outer cover member by frictional engagement produced by outward biasing of said flanges against said side wall panels of the outer cover member.
Claim 3
Dependent Claim
47 words
A package as defined in claim 1 wherein said tray further includes a second pair of flanges extending outwardly from the remaining side wall panels of said tray, each end of each flange of said second pair abutting one edge of a flange of said first pair.
Claim 4
Dependent Claim
39 words
A package as defined in claim 1 wherein said tray is sealed by an inner cover member which overlies and is bonded to the surfaces of each of the flanges, said inner cover member being movable with said flanges.
Claim 5
Dependent Claim
17 words
A package as defined in claim 1 wherein said outer cover member further includes end wall panels.
Claim 6
Dependent Claim
23 words
A package as defined in claim 1 wherein said bendable tray flanges have cut out areas and are adapted for use as handles.
Claim 7
Dependent Claim
38 words
A package as defined in claim 2 wherein said tray is sealed by an inner cover member which overlies and is bonded to the surfaces of each of the flanges, said cover member being movable with said flanges.
Claim 8
Dependent Claim
16 words
A package as defined in claim 6 wherein the inner cover member is a flexible film.
Claim 9
Dependent Claim
31 words
A package as defined in claim 7 wherein the side wall panels of said outer cover member are tapered to provide a fit with a tray having corresponding tapered side walls.
Claim 10
Dependent Claim
55 words
A package as defined in claim 7 further including at least one additional tray also having a bottom wall panel, a plurality of side wall panels and a pair of flanges extending outwardly from opposite ones of said side wall panels, all of said trays being received within and protected by the outer cover member.
Claim 11
Dependent Claim
34 words
A package as defined in claim 9 wherein each tray is sealed by a separate inner cover member to permit individual trays to be removed from the outer cover member without removing other trays.
Claim 12
Dependent Claim
31 words
A package as defined in claim 9 wherein a single inner cover member is used to seal more than one of the plurality of trays received within the outer cover member.
Claim 13
Dependent Claim
144 words
For use in combination with a tray having flanges bendable from an extended position to a tucked position, a blank for forming a generally rectangular, open-ended tube for holding the tray, said blank comprising: a top wall panel having side edges spaced from one another by a distance less than the distance between the outer edges of the tray flanges when said flanges are in said extended position thereof, but greater than the distance between the inner edges of the tray flanges; first and second side wall panels extending from opposite side edges of said top wall panel, said side wall panels having a width approximately equal to the height of the tray; and a bottom wall panel assembly comprising first and second panels extending from the edges of said side wall panels, said panels including means for interlocking their surfaces in overlapping relation.
Claim 14
Dependent Claim
144 words
For use in combination with a tray having flanges bendable from an extended position to a tucked position, a blank for forming a generally rectangular, open-ended tube for holding the tray, said blank comprising: a top wall panel having side edges spaced from one another by a distance less than the distance between the outer edges of the tray flanges when said flanges are in said extended position thereof, but greater than the distance between the inner edges of the tray flanges; first and second side wall panels extending from opposite side edges of said top wall panel, said side wall panels having a width approximately equal to the height of the tray; and a bottom wall panel assembly comprising first and second panels extending from the edges of said side wall panels, said panels including means for interlocking their surfaces in overlapping relation.
Claim 15
Dependent Claim
34 words
A blank as defined in claim 12 wherein said interlocking means comprises at least one protruding tab on one of said panels and at least one aligned cut through the other of said panels.
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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) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |