Patent US4291826A successfully refreshed from Google Patents.
US4291826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage container
Assignee: Individual
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Filing: 1979-07-20
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Granted: 1981-09-29
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Expires: 1999-07-20
Abstract
Abstract A container designed for assembly without separable fasteners to comprise a leakproof receptacle or tray for use by meat packers and others. The container is formed from a single blank of corrugated fibreboard having a water-repellent surface. It comprises sides (23, 24) and ends (21, 22) rising from a bottom (10) orthogonally, and interconnected by webbed corners (25, 28). The ends are provided with flaps (30, 40) including lock tabs (31, 32, 41, 42) with tongues (33, 34, 43, 44) which cooperate with the flaps to hold the corners against the outsides of the ends, and the material is crushed, at the lower corners (110) of the container and at the points of action (120) of the tongues, to provide flexibility and prevent damage to the material at sharp folds.
Inventors
- 👤 John L. Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:27
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/20; B65D5/24; B65D5/248; Y; Y10; Y10S; Y10S229/00; Y10S229/93; Y10S229/939
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
A container folded from a single blank of corrugated fiberboard comprising: (a) a bottom; (b) a side; (c) an end; (d) a webbed corner continuous with said bottom, side and end and folded diagonally to overlie said end when said bottom, side and end are mutually orthogonal; (e) a flap continuous with said end and folded outward and downward to overlie a portion of said corner when folded; and (f) a lock tab continuous with said flap and including a tongue for insertion between said end and a portion of said folded corner not underlying said flap, said lock tab comprising a perforation score extending in the direction of the length of said container, and a pair of converging crease scores mutually intersecting with said perforation score, said perforation and crease scores being constructed and arranged to permit folding of said lock tab in opposite directions to enable said tongue to lie flat against said end during sliding and insertion beneath said portion of said folded end.
Claim 2
Dependent Claim
167 words
A container folded from a single blank of corrugated fiberboard comprising: (a) a bottom; (b) a side; (c) an end; (d) a webbed corner continuous with said bottom, side and end and folded diagonally to overlie said end when said bottom, side and end are mutually orthogonal; (e) a flap continuous with said end and folded outward and downward to overlie a portion of said corner when folded; and (f) a lock tab continuous with said flap and including a tongue for insertion between said end and a portion of said folded corner not underlying said flap, said lock tab comprising a perforation score extending in the direction of the length of said container, and a pair of converging crease scores mutually intersecting with said perforation score, said perforation and crease scores being constructed and arranged to permit folding of said lock tab in opposite directions to enable said tongue to lie flat against said end during sliding and insertion beneath said portion of said folded end.
Claim 3
Dependent Claim
27 words
A container according to claim 1 in which the material is crushed in the area where said bottom, said side, said end and said corner come together.
Claim 4
Dependent Claim
31 words
The container defined by claim 1, in which the diagonal fold of said corner is crushed in the area beneath which said tongue is to be inserted, to facilitate the insertion.
Claim 5
Dependent Claim
27 words
The container defined by claim 1, in which the fiberboard is crushed in the area where said bottom, said side, said end and said corner come together.
Claim 6
Dependent Claim
52 words
The container defined by claim 1, which comprises two of said sides and ends, four of said webbed corners, a flap continuous with each of said ends and two of said lock tabs for each of said flaps, each of said lock tabs having a tongue insertable beneath one of said corners.
Claim 7
Dependent Claim
26 words
The container defined by claim 5, wherein the two ends are disposed in longitudinal opposition, and the corrugations of said fiberboard extend longitudinally of the container.
Claim 8
Dependent Claim
14 words
The container defined by claim 1, wherein the fiberboard comprises an inner, water-repellent layer.
Claim 9
Dependent Claim
153 words
A container folded from a single blank of corrugated fiberboard comprising: (a) a bottom; (b) a side; (c) an end; (d) a webbed corner continuous with said bottom, side and end and folded diagonally to overlie said end when said bottom, side and end are mutually orthogonal; (e) a flap continuous with said end and folded outward and downward to overlie a portion of said corner when folded; (f) a lock tab continuous with said flap and including a tongue for insertion between said end and a portion of said folded corner not underlying said flap, said lock tab including scores for folds in opposite directions to enable said tongue to lie flat against said end during sliding and pivotal insertion beneath said portion of said folded end; and (g) the diagonal fold of said corner being crushed in the area beneath which said tongue is to be inserted, to facilitate the insertion.
Claim 10
Dependent Claim
153 words
A container folded from a single blank of corrugated fiberboard comprising: (a) a bottom; (b) a side; (c) an end; (d) a webbed corner continuous with said bottom, side and end and folded diagonally to overlie said end when said bottom, side and end are mutually orthogonal; (e) a flap continuous with said end and folded outward and downward to overlie a portion of said corner when folded; (f) a lock tab continuous with said flap and including a tongue for insertion between said end and a portion of said folded corner not underlying said flap, said lock tab including scores for folds in opposite directions to enable said tongue to lie flat against said end during sliding and pivotal insertion beneath said portion of said folded end; and (g) the diagonal fold of said corner being crushed in the area beneath which said tongue is to be inserted, to facilitate the insertion.
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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) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |