US3622065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock bottom container
Assignee: Consolidated Paper Bahamas Ltd
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Filing: 1969-07-18
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Granted: 1971-11-23
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Expires: 1989-07-18
Abstract
Abstract This invention relates to a paperboard container. The feature is the bottom formation which is formed from end flaps that hinge to the sidewalls. Three of the end flaps are interconnected and opposed end flaps are formed with a fold line so that the three interconnected end flaps can be hinged upwardly into an operative position in a flat folded condition. The single end flap is then interleaved with the folded portions of the three interconnected end flaps.
Inventors
- 👤 Sydney T Butterfill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:23
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/02; B65D5/0263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
279 words
In a container formed from a folded blank of paperboard or the like: a. opposed sidewalls and front and rear walls foldably interconnected to define a tube of rectangular cross section; b. structures for closing the bottom of said tube comprising: c. a closure flap foldably connected to said front wall and folded to a preliminary position in facing relationship with the inside of said front wall; d. said closure flap being free from a fold line within the area thereof; e. a second closure flap foldably connected to said rear wall; f. an interconnecting flap foldably connected to each sidewall and to a correlative side of said second closure flap; g. a fold line in each interconnecting flap extending diagonally from a free edge of said interconnecting flap to the juncture of the lines of fold between said interconnecting flap and the sidewall connected thereto and between said interconnecting flap and the second closure flap connected thereto; h. each of said interconnecting flaps being folded upon itself with elements thereof lying in facing relationship along the inner side of a correlative sidewall; i. said second closure flap being folded into position upon the folding of said interconnecting flap along fold lines connecting said interconnecting flaps to said sidewalls; j. said first closure flap being folded to a final position in facing and contacting relationship with said second closure flap; k. each of said interconnecting flaps being folded while in their aforesaid facing relationship along the fold line connecting it to a related sidewall into a final position in facing and contacting relationship with said first closure flap to maintain said first and second closure flaps in locked position.
Claim 2
Dependent Claim
279 words
In a container formed from a folded blank of paperboard or the like: a. opposed sidewalls and front and rear walls foldably interconnected to define a tube of rectangular cross section; b. structures for closing the bottom of said tube comprising: c. a closure flap foldably connected to said front wall and folded to a preliminary position in facing relationship with the inside of said front wall; d. said closure flap being free from a fold line within the area thereof; e. a second closure flap foldably connected to said rear wall; f. an interconnecting flap foldably connected to each sidewall and to a correlative side of said second closure flap; g. a fold line in each interconnecting flap extending diagonally from a free edge of said interconnecting flap to the juncture of the lines of fold between said interconnecting flap and the sidewall connected thereto and between said interconnecting flap and the second closure flap connected thereto; h. each of said interconnecting flaps being folded upon itself with elements thereof lying in facing relationship along the inner side of a correlative sidewall; i. said second closure flap being folded into position upon the folding of said interconnecting flap along fold lines connecting said interconnecting flaps to said sidewalls; j. said first closure flap being folded to a final position in facing and contacting relationship with said second closure flap; k. each of said interconnecting flaps being folded while in their aforesaid facing relationship along the fold line connecting it to a related sidewall into a final position in facing and contacting relationship with said first closure flap to maintain said first and second closure flaps in locked position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |