US3640449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tray-forming carton
Assignee: Western Kraft Corp
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Filing: 1969-12-24
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Granted: 1972-02-08
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Expires: 1989-12-24
Abstract
Abstract A tray-forming carton comprises a folded sheet of stiff paperboard. It includes a bottom having side and end walls, and a top comprising an integral section of the sheet hinged through a fold line at one end to one of the walls of the bottom. A perforated tear line extends across the top, adjacent the fold line. The free end of the top-forming sheet section meets the opposite bottom wall, to which it is secured by releasable securing means such as tear tape. The resulting closed carton may be converted to a tray by releasing the securing means and tearing off the top along the perforated tear line.
Inventors
- 👤 Donald Lee Bastian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:34
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/20; B65D5/28; B65D5/42; B65D5/54; B65D5/545; B65D5/64; B65D5/66; B65D5/6626; B65D5/665; B65D5/6652
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
A tray-forming carton made from a folded sheet of stiff, foldable paperboard, the carton comprising: a. a bottom including integral side and end walls of uniform height, b. a top comprising an integral section of the sheet hinged at one end to the top edge of one of the bottom walls through a fold line, c. a perforated tear line across the top substantially parallel to the fold line, d. the opposite end of the top-forming sheet section meeting the upper edge of the bottom wall opposite the wall to which the sheet section is hinged, and e. releasable securing means releasably securing the meeting top-forming sheet section end and upper edge of the bottom wall.
Claim 2
Dependent Claim
116 words
A tray-forming carton made from a folded sheet of stiff, foldable paperboard, the carton comprising: a. a bottom including integral side and end walls of uniform height, b. a top comprising an integral section of the sheet hinged at one end to the top edge of one of the bottom walls through a fold line, c. a perforated tear line across the top substantially parallel to the fold line, d. the opposite end of the top-forming sheet section meeting the upper edge of the bottom wall opposite the wall to which the sheet section is hinged, and e. releasable securing means releasably securing the meeting top-forming sheet section end and upper edge of the bottom wall.
Claim 3
Dependent Claim
12 words
The carton of claim 1 wherein the securing means comprises adhesive tape.
Claim 4
Dependent Claim
13 words
The carton of claim 2 wherein the adhesive tape comprises string-operated tear tape.
Claim 5
Dependent Claim
28 words
The carton of claim 1 including a pair of end flaps folded downwardly from opposite ends of the top and lapping the corresponding end walls of the bottom.
References Cited (Backward Citations)
US2955734A
Cited
US3187982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |