Patent US3724741A successfully refreshed from Google Patents.
US3724741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealable carton
Assignee: F.N. Burt Co Inc
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Filing: 1971-12-23
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Granted: 1973-04-03
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Expires: 1991-12-23
Abstract
Abstract A foldable carton capable of being completely sealed by means of inner end flaps which are notched for transferring adhesive from outer end flaps during closing to the edges of fold-back panels between the flaps.
Inventors
- 👤 L Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:45
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/02; B65D5/06; B65D5/061; B65D5/062; B65D5/42; B65D5/54; B65D5/5405; B65D5/541
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
185 words
In a carton comprising: a tubular body; a top and a bottom closure on opposite ends of said body; said top closure including a top inner flap connected to said body, a top outer flap connected to said body, triangular end panels connected to said body, two pairs of top triangular fold-back panels, each pair of which is connected to a respective one of said top end panels and to respective ones of said top flaps, said top fold-back panels being foldable against the inner surfaces of said top inner and outer flaps, the improvement comprising: a quantity of adhesive on said inner surface of said top outer flap; said top inner flap having a cut-out portion along its side edges defining cut-out edges facing said top outer panel whereby a portion of said adhesive is transferred, during the closing of said top flap, from said outer flap inner surface by said cut-out edges onto the free edges of said triangular foldback panels, thereby sealing together respective ones of each said pair of fold-back panels and said top outer flap to said top inner flap.
Claim 2
Dependent Claim
185 words
In a carton comprising: a tubular body; a top and a bottom closure on opposite ends of said body; said top closure including a top inner flap connected to said body, a top outer flap connected to said body, triangular end panels connected to said body, two pairs of top triangular fold-back panels, each pair of which is connected to a respective one of said top end panels and to respective ones of said top flaps, said top fold-back panels being foldable against the inner surfaces of said top inner and outer flaps, the improvement comprising: a quantity of adhesive on said inner surface of said top outer flap; said top inner flap having a cut-out portion along its side edges defining cut-out edges facing said top outer panel whereby a portion of said adhesive is transferred, during the closing of said top flap, from said outer flap inner surface by said cut-out edges onto the free edges of said triangular foldback panels, thereby sealing together respective ones of each said pair of fold-back panels and said top outer flap to said top inner flap.
Claim 3
Dependent Claim
27 words
The carton according to claim 1 wherein the length of each said cut-out edge equals the length of each said free edge of said top fold-back panels.
Claim 4
Dependent Claim
28 words
The carton according to claim 1 further including a layer of foil disposed along the entire inner surface of said tubular body and said top and bottom closures.
Claim 5
Dependent Claim
33 words
A carton according to claim 1 wherein said top inner flap is provided with lines of weakening thereon to permit said inner panel to be torn away during opening of said outer flap.
Claim 6
Dependent Claim
171 words
The carton according to claim 1 wherein said bottom closure includes a bottom inner flap connected to said body, a bottom outer flap connected to said body, triangular bottom end panels connected to said body, two pairs of bottom triangular fold-back panels, each pair of which is connected to a respective one of said bottom end panels and to respective ones of said bottom flaps, said bottom fold-back panels being foldable against the inner surfaces of said bottom inner flaps, a quantity of adhesive on said inner surface of said bottom outer flap, said bottom inner flap having a cut-out portion along its free side edges defining cut-out edges facing said bottom outer panel, whereby a portion of said adhesive is transferred, during closing of said bottom flaps, from said bottom outer flap inner surface by said cut-out edges onto the free edges of said triangular fold-back panels, thereby sealing together respective ones of each said pair of bottom fold-back panels and said bottom outer flap to said bottom inner flap.
Claim 7
Dependent Claim
29 words
The carton according to claim 5 whereof the leNgth of the bottom cut-out edge is equal to the length of each said free edge of said bottom fold-back panels.
References Cited (Backward Citations)
CA664280A
Cited
US2162566A
Cited
US2478359A
Cited
US2658662A
Cited
US2523246A
Cited
US3059827A
Cited
US3194473A
Cited
US3120333A
Cited
US3286906A
Cited
US3248039A
Cited
US3322324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |