US3638853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boxboard carton closure
Assignee: Torrington Co Ltd
•
Filing: 1970-10-15
•
Granted: 1972-02-01
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Expires: 1990-10-15
Abstract
Abstract A boxboard carton has a closure which is sealed by activation of adhesive applied to facing surfaces of closure flaps near a corner of the carton, the facing surfaces being on the same side of the boxboard sheet from which the carton is made, the carton being openable without rupturing the adhesive seal.
Inventors
- 👤 George S Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:57
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/54; B65D5/5405; B65D5/541; Y; Y10; Y10S; Y10S229/00; Y10S229/924
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
A carton formed from a single sheet of material and having a sealed end closure which includes, inner and outer end flaps folded inwardly counterdirectionally into overlapping relationship, said outer flap being oversize and having a full-size main panel and an extension panel, said extension panel being folded inwardly between said main panel and the underlying inner flap along a fold line extending substantially along a corner line of the carton, and, an adhesive coating on the outer surface of said sheet material formed into a face-to-face adhesive seal between said inner flap and said extension panel.
Claim 2
Dependent Claim
97 words
A carton formed from a single sheet of material and having a sealed end closure which includes, inner and outer end flaps folded inwardly counterdirectionally into overlapping relationship, said outer flap being oversize and having a full-size main panel and an extension panel, said extension panel being folded inwardly between said main panel and the underlying inner flap along a fold line extending substantially along a corner line of the carton, and, an adhesive coating on the outer surface of said sheet material formed into a face-to-face adhesive seal between said inner flap and said extension panel.
Claim 3
Dependent Claim
50 words
A carton as claimed in claim 1, wherein the other surface of said sheet material is a nonadhesive surface so that the upper face of the folded-in extension panel and the under face of the portion of the main panel which it underlies are connected but unsealed to each other.
Claim 4
Dependent Claim
27 words
A carton as claimed in claim 2, wherein the outer flap has two parallel lines of perforations forming therebetween a removable tear strip for opening the carton.
Claim 5
Dependent Claim
29 words
A carton as claimed in claim 3, wherein one of said lines of perforation extends along the line of connection between said main panel and said folded-in extension panel.
Claim 6
Dependent Claim
35 words
A carton as claimed in claim 3, wherein said tear strip overlies said folded-in extension panel and is removable from the carton without breaking the seal between said extension flap and said underlying inner flap.
Claim 7
Dependent Claim
49 words
A carton as claimed in claim 2, wherein the carton has parallel lines of perforations extending along the corner lines of the carton where said flaps arE folded inwardly whereby both said flaps may be torn away from said carton without breaking said adhesive seal to open said carton.
Claim 8
Dependent Claim
46 words
A carton as claimed in claim 1 having a pair of dust flaps folded inwardly counterdirectionally, said extension panel and said dust flaps being contoured to lie, without overlapping each other, in a single plane between the planes of said main panel and said inner flap.
References Cited (Backward Citations)
US2670128A
Cited
US2864547A
Cited
US2868432A
Cited
US3132793A
Cited
US3520465A
Cited
US3507442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |