US3595466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recloseable carton
Assignee: F N BURT CO Inc
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Filing: 1969-07-17
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Granted: 1971-07-27
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Expires: 1989-07-17
Abstract
Abstract A recloseable carton produced from a paperboard blank is disclosed wherein the cover means includes inner and outer panels which are overlapped and initially releasably glued together. After being opened the carton may be reclosed by overlapping the two panels in reverse order, the then outer panel being retained in closed position by end flaps on the panel inserted between the ends of the then inner panel and the end panels of the carton. When initially glued together the panels are glued in areas of one panel defined by a centrally located area nearly completely surrounded by a die cut and a plurality of areas surrounded by cut scores on opposite sides of the die-cut area, whereby upon opening, the die-cut area is pulled out of the one panel followed by delamination of the cut score areas of that panel.
Inventors
- 👤 Charles W Rosenburg Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:16
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/54; B65D5/5405; B65D5/542; B65D5/5435
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
242 words
A reclosable paperboard carton comprising a parallelepiped body enclosed on three sides by three connected rectangular wall panels, end closure flaps extending from two opposite panels, in overlapping secured relationship, at each end of said carton, and dust flaps extending from the intermediate one of said three wall panels and interconnected with said end flaps to complete five walls of the carton; a sixth or closure wall of the carton comprising a multilayer structure, said structure comprising a first closure panel hinged to one of said opposite panels and a second closure panel hinged to the other of the said opposite panels, a dust flap hinged to each side margin of said first closure panel, said second closure panel having a readily detachable portion adapted to be initially adhesively secured to the outer surface of said first closure panel when the latter is closed first and the second closure panel folded down over the first closure panel, all whereby upon first opening the carton the readily detachable portion is broken away from said second closure panel when said second closure panel is lifted and whereby the carton may be reclosed by first folding down said second closure panel and then folding down the first closure panel upon said second closure panel while the dust flaps carried by said first closure panel are inserted frictionally in between the side edges of said second closure panel and the end closure flaps of the carton.
Claim 2
Dependent Claim
242 words
A reclosable paperboard carton comprising a parallelepiped body enclosed on three sides by three connected rectangular wall panels, end closure flaps extending from two opposite panels, in overlapping secured relationship, at each end of said carton, and dust flaps extending from the intermediate one of said three wall panels and interconnected with said end flaps to complete five walls of the carton; a sixth or closure wall of the carton comprising a multilayer structure, said structure comprising a first closure panel hinged to one of said opposite panels and a second closure panel hinged to the other of the said opposite panels, a dust flap hinged to each side margin of said first closure panel, said second closure panel having a readily detachable portion adapted to be initially adhesively secured to the outer surface of said first closure panel when the latter is closed first and the second closure panel folded down over the first closure panel, all whereby upon first opening the carton the readily detachable portion is broken away from said second closure panel when said second closure panel is lifted and whereby the carton may be reclosed by first folding down said second closure panel and then folding down the first closure panel upon said second closure panel while the dust flaps carried by said first closure panel are inserted frictionally in between the side edges of said second closure panel and the end closure flaps of the carton.
Claim 3
Dependent Claim
45 words
The carton as set forth in claim 1 in which structural modifications are provided adjacent the hinges of the dust flaps carried by said first-named closure panel for locking the first closure panel in reclosed position thus supplementing the frictional retention of the dust flaps.
Claim 4
Dependent Claim
205 words
A reclosable paperboard carton comprising a parallelepiped body enclosed on three sides by three connected rectangular wall panels, end closure flaps extending from two opposite panels, in overlapping secured relationship, at each end of said carton, and dust flaps extending from the intermediate one of said three wall panels and interconnected with said end flaps to complete five walls of the carton; a sixth or closure wall of the carton comprising a multilayer structure, said structure comprising a first closure panel hinged to one of the said opposite panels and a second closure panel hinged to the other of the said opposite panels, said second closure panel being of greater length than the width of the carton cross section at its closure point, the excess length portion being reverse folded inwardly against the surface of the principal portion thereof and adhesively secured thereto along a portion only of such contacting surfaces, an area of said excess length portion other than the adhesively secured portion being readily detachable along a weakened line of separation, said detachable portion being glued to the outer surface of the first-closed second closure panel for initial packaging and broken away from said second closure panel upon initial opening of the carton.
Claim 5
Dependent Claim
205 words
A reclosable paperboard carton comprising a parallelepiped body enclosed on three sides by three connected rectangular wall panels, end closure flaps extending from two opposite panels, in overlapping secured relationship, at each end of said carton, and dust flaps extending from the intermediate one of said three wall panels and interconnected with said end flaps to complete five walls of the carton; a sixth or closure wall of the carton comprising a multilayer structure, said structure comprising a first closure panel hinged to one of the said opposite panels and a second closure panel hinged to the other of the said opposite panels, said second closure panel being of greater length than the width of the carton cross section at its closure point, the excess length portion being reverse folded inwardly against the surface of the principal portion thereof and adhesively secured thereto along a portion only of such contacting surfaces, an area of said excess length portion other than the adhesively secured portion being readily detachable along a weakened line of separation, said detachable portion being glued to the outer surface of the first-closed second closure panel for initial packaging and broken away from said second closure panel upon initial opening of the carton.
Claim 6
Dependent Claim
82 words
The carton as set forth in claim 3 in which additional areas of the reverse-folded excess length portion of the second closure panel are also adhesively secured to the outer surface of said first closure panel but said additional areas being outlined by score lines which penetrate only part way through the thickness of said portion, whereby the material of said portion at said additional areas is delaminated when said second closure panel is pulled upon the initial opening of the carton.
Claim 7
Dependent Claim
80 words
The carton as set forth in claim 4 in which a score line is impressed in the outer surface of said first closure panel between its outer edge and the areas to which the additional adhesive-bearing areas of said second closure panel are secured, in order to stop any delamination of the said outer surface of said first closure panel should the delamination occur in said surface instead of in the said outlined additional areas of the second closure panel.
Claim 8
Dependent Claim
82 words
The carton as set forth in claim 3, in which the material of both the main portion of the second closure panel and the excess-length portion thereof is cut away adjacent both ends of the line of reverse folding between said portions leaving the fold intact centrally thereof, and the portions adjacent said central fold free of adhesive, whereby the folded edge at that point affords a stiff reinforced lifting tab for the fingers in rupturing the closure in the initial instance.
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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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |