Patent US4136816A successfully refreshed from Google Patents.
US4136816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self locking container
Assignee: Smurfit Kappa Packaging Corp
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Filing: 1978-01-03
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Granted: 1979-01-30
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Expires: 1998-01-03
Abstract
Abstract A self-locking container formed of a unitary blank of foldable paperboard having integral cover and reclosing means.
Inventors
- 👤 Jeffrey M. Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:43
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/64; B65D5/66; B65D5/6626; B65D5/665; B65D5/6661; B65D5/6664
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
A self-locking container, formed of a unitary blank of foldable paperboard, comprising: (a) a pair of top and bottom walls interconnected by a rear wall foldably joined at its upper and lower edges to rear edges of said top and bottom walls; (b) a front wall foldably joined at its lower edge to a front edge of said bottom wall; (c) opposed pairs of upper and lower side wall panels foldably joined to opposed side edges of said top and bottom walls; (d) opposed pairs of front and rear bellows members foldably joining said side wall panels to said front and rear walls; (e) said rear bellows members also foldably joining said upper side wall panels to said lower side wall panels at the rear of said container; (f) a closure flap foldably joined to and depending from a front edge of said top wall; (g) said front bellows members forming with said front wall a pocket for receiving said closure flap to provide interlocking means for closing said container.
Claim 2
Dependent Claim
170 words
A self-locking container, formed of a unitary blank of foldable paperboard, comprising: (a) a pair of top and bottom walls interconnected by a rear wall foldably joined at its upper and lower edges to rear edges of said top and bottom walls; (b) a front wall foldably joined at its lower edge to a front edge of said bottom wall; (c) opposed pairs of upper and lower side wall panels foldably joined to opposed side edges of said top and bottom walls; (d) opposed pairs of front and rear bellows members foldably joining said side wall panels to said front and rear walls; (e) said rear bellows members also foldably joining said upper side wall panels to said lower side wall panels at the rear of said container; (f) a closure flap foldably joined to and depending from a front edge of said top wall; (g) said front bellows members forming with said front wall a pocket for receiving said closure flap to provide interlocking means for closing said container.
Claim 3
Dependent Claim
119 words
A self-locking container, formed of a unitary blank of foldable paperboard, comprising: (a) a pair of top and bottom walls interconnected by a rear wall foldably joined at its upper and lower edges to rear edges of said top and bottom walls; (b) a front wall foldably joined at its lower edge to a front edge of said bottom wall; (c) opposed pairs of upper and lower side walls panels foldably joined to opposed side edges of said top and bottom walls; (d) a closure flap foldably joined to and depending from a front edge of said top wall; (e) said front wall presenting a pocket for receiving said closure flap to provide interlocking means for closing said container.
Claim 4
Dependent Claim
119 words
A self-locking container, formed of a unitary blank of foldable paperboard, comprising: (a) a pair of top and bottom walls interconnected by a rear wall foldably joined at its upper and lower edges to rear edges of said top and bottom walls; (b) a front wall foldably joined at its lower edge to a front edge of said bottom wall; (c) opposed pairs of upper and lower side walls panels foldably joined to opposed side edges of said top and bottom walls; (d) a closure flap foldably joined to and depending from a front edge of said top wall; (e) said front wall presenting a pocket for receiving said closure flap to provide interlocking means for closing said container.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |