US4252267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self locking container
Assignee: Weyerhaeuser Co
•
Filing: 1980-01-07
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Granted: 1981-02-24
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Expires: 2000-01-07
Abstract
Abstract The invention relates to a self locking container comprising an integral tray and cover. Both the tray and cover are assembled without adhesive by tab and slot combinations provided in the walls thereof. In addition, the tab and slot combination for securing and locking the cover portion also serves as an automatic locking device for locking the cover to the tray when the container is closed.
Inventors
- 👤 Edward L. Osborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:11
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/20; B65D5/30; B65D5/301; B65D5/302; B65D5/304; B65D5/42; B65D5/64; B65D5/66; B65D5/6626; B65D5/665; B65D5/6661; B65D5/6664; B65D5/6667
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
222 words
A self locking container prepared from a single blank of paperboard or the like comprising a tray portion and an integral cover portion, said tray portion including a bottom panel with upstanding front, rear and first opposed side walls foldably attached thereto, said front and rear walls further including a plurality of corner connecting panels foldably attached to the ends thereof, and said cover portion including a top panel with a front and second opposed side walls foldably attached to the outer edges thereof, said second opposed side walls further including a pair of corner connecting flaps foldably attached thereto adjacent the front wall, the improvement wherein the front, rear and first opposed side walls of the tray portion are locked and secured together without adhesive by a first tab and slot combination provided between the first opposed side walls and the corner flaps attached to the front and rear walls, and the front and second opposed side walls of the cover portion are locked and secured together without adhesive by a second tab and slot combination provided between the front wall and the corner flaps attached to the second opposed side walls, the tab elements of said second tab and slot combination further providing an automatic locking feature between the tray portion and the cover portion when the container is closed.
Claim 2
Dependent Claim
222 words
A self locking container prepared from a single blank of paperboard or the like comprising a tray portion and an integral cover portion, said tray portion including a bottom panel with upstanding front, rear and first opposed side walls foldably attached thereto, said front and rear walls further including a plurality of corner connecting panels foldably attached to the ends thereof, and said cover portion including a top panel with a front and second opposed side walls foldably attached to the outer edges thereof, said second opposed side walls further including a pair of corner connecting flaps foldably attached thereto adjacent the front wall, the improvement wherein the front, rear and first opposed side walls of the tray portion are locked and secured together without adhesive by a first tab and slot combination provided between the first opposed side walls and the corner flaps attached to the front and rear walls, and the front and second opposed side walls of the cover portion are locked and secured together without adhesive by a second tab and slot combination provided between the front wall and the corner flaps attached to the second opposed side walls, the tab elements of said second tab and slot combination further providing an automatic locking feature between the tray portion and the cover portion when the container is closed.
Claim 3
Dependent Claim
35 words
The container of claim 1 wherein the automatic locking feature is accomplished when the tab elements of said second tab and slot combination engage slots provided therefor in the front wall of said tray portion.
Claim 4
Dependent Claim
43 words
The container of claim 2 wherein the tab elements of said first tab and slot combination are inserted through the slots located in said first opposed side walls wherein the ends thereof become engaged in slits provided therefor in the tray bottom panel.
Claim 5
Dependent Claim
57 words
The container of claim 3 wherein the tab elements of said second tab and slot combination are inserted through the slots located in the front wall of said cover portion to lie inside thereof where they are available to automatically engage the slots provided in the front wall of said tray portion when the container is closed.
References Cited (Backward Citations)
US690498A
Cited
US1559237A
Cited
US1755722A
Cited
US1862980A
Cited
US2193925A
Cited
US2373977A
Cited
US2663488A
Cited
US2789750A
Cited
US2889103A
Cited
US3093291A
Cited
US3684159A
Cited
US3827624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |