US4856707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container for food products
Assignee: MacMillan Bloedel Containers Inc
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Filing: 1988-08-08
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Granted: 1989-08-15
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Expires: 2008-08-08
Abstract
Abstract A container suitable for packaging food items such as hamburgers or fried chicken is disclosed. The container includes two complementary container pieces, namely a tray and a cover closable over the tray. Each piece has opposing sidewalls provided with tip portions which project longitudinally outwardly over the central portion of each adjacent sidewall without such tip portions to pass through a plane determined by the central portion of each such adjacent sidewalls. The tip portions of each complementary piece interlock to securely close the container.
Inventors
- 👤 Achim R. Lorenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:55
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/64; Y; Y10; Y10S; Y10S229/00; Y10S229/901
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
79 words
A container comprising a tray piece and a cover piece closable over said tray piece, said pieces each including a bottom wall and upstanding sidewalls connected to said bottom wall, said sidewalls having central portions, two opposing sidewalls of each piece having portions extending upwardly from said central portions thereof, said upwardly extending portions each having a tip portion projecting outwardly through a plane determined by the central portion of a sidewall adjacent said sidewalls having said extending portions.
Claim 2
Dependent Claim
79 words
A container comprising a tray piece and a cover piece closable over said tray piece, said pieces each including a bottom wall and upstanding sidewalls connected to said bottom wall, said sidewalls having central portions, two opposing sidewalls of each piece having portions extending upwardly from said central portions thereof, said upwardly extending portions each having a tip portion projecting outwardly through a plane determined by the central portion of a sidewall adjacent said sidewalls having said extending portions.
Claim 3
Dependent Claim
36 words
A container as claimed in claim 1, wherein each of said extending portions is formed as an elongate tab portion, each said tab portion having one of said tip portions at each opposite longitudinal end thereof.
Claim 4
Dependent Claim
15 words
A container as claimed in claim 2, wherein said pieces are formed of flexible material.
Claim 5
Dependent Claim
24 words
A container as claimed in claim 3, wherein said sidewalls of said pieces taper outwardly from said bottom wall and said pieces are nestable.
Claim 6
Dependent Claim
13 words
A container as claimed in claim 4, wherein said pieces have identical construction.
Claim 7
Dependent Claim
39 words
A container as claimed in claim 2, wherein each of said tip portions has an underedge adapted to abut the underedges of the tip portions of a complementary piece to prevent accidental separation of said pieces of said container.
Claim 8
Dependent Claim
15 words
A container as claimed in claim 2, wherein said tip portions have beveled side edges.
Claim 9
Dependent Claim
43 words
A container as claimed in claim 2, wherein said tip portions have side edges with a beveled edge section and an edge section which in located below said beveled edge section and is generally perpendicular to top edges of said upwardly extending portions.
Claim 10
Dependent Claim
17 words
A container as claimed in claim 2, wherein said central portions of said sidewalls are generally trapezoidal.
Claim 11
Dependent Claim
18 words
A container as claimed in claim 9, wherein at least two of said central portions have beveled corners.
Claim 12
Dependent Claim
17 words
A container as claimed in claim 10, wherein at least one of said pieces has single-face construction.
Claim 13
Dependent Claim
25 words
A container as claimed in claim 1, further comprising reinforcing means secured to said bottom wall and the opposite sidewalls of one of said pieces.
Claim 14
Dependent Claim
92 words
A container piece adapted to form a container by interlocking with another similar, complementary piece, said piece comprising: a bottom wall; upstanding sidewalls connected o said bottom wall; a tab portion on a central portion of at least two opposing sidewalls, said tab portions extending to have an elevation above the central portions of adjacent sidewalls without said tab portions; and a tip portion located at each of two longitudinal ends of each said tab portion, said tip portions projecting outwardly through planes determined by said central portions of said adjacent sidewalls.
Claim 15
Dependent Claim
92 words
A container piece adapted to form a container by interlocking with another similar, complementary piece, said piece comprising: a bottom wall; upstanding sidewalls connected o said bottom wall; a tab portion on a central portion of at least two opposing sidewalls, said tab portions extending to have an elevation above the central portions of adjacent sidewalls without said tab portions; and a tip portion located at each of two longitudinal ends of each said tab portion, said tip portions projecting outwardly through planes determined by said central portions of said adjacent sidewalls.
Claim 16
Dependent Claim
14 words
A container piece as claimed in claim 13, which is formed of flexible material.
Claim 17
Dependent Claim
23 words
A container piece as claimed in claim 13, further comprising reinforcing means secured to said bottom wall and to two opposite sidewalls thereof.
Claim 18
Dependent Claim
27 words
A container piece as claimed in claim 13, wherein each of said tip portions has an underedge adapted to abut the like underedge of a complementary piece.
Claim 19
Dependent Claim
16 words
A container piece as claimed in claim 13, wherein said tip portions have beveled side edges.
Claim 20
Dependent Claim
43 words
A container piece as claimed in claim 13, wherein said tip portions have side edges with a beveled edge section and an edge section which is located below said beveled edge section and is generally perpendicular to top edges of said tab portions.
Claim 21
Dependent Claim
18 words
A container piece as claimed in claim 13, wherein said central portions of said sidewalls are generally trapezoidal.
Claim 22
Dependent Claim
11 words
A container piece as claimed in claim 13, having single-face construction.
Claim 23
Dependent Claim
11 words
A container piece as claimed in claim 13, having double-face construction.
Claim 24
Dependent Claim
106 words
A blank for forming a container piece which is adapted to interlock with a complementary piece, said blank comprising: a bottom wall section; first opposing sidewall sections each having a central portion connected to said bottom wall portion; and second opposing sidewall sections each having a central portion connected to said bottom wall portion adjacent said first sidewall sections; said second sidewall sections each having a tab portion on each said central portion thereof, said tab portions each having a tip portion at the longitudinal ends thereof, said tip portions projecting in the longitudinal direction of their respective tab portions to over their respective central portions.
Claim 25
Dependent Claim
106 words
A blank for forming a container piece which is adapted to interlock with a complementary piece, said blank comprising: a bottom wall section; first opposing sidewall sections each having a central portion connected to said bottom wall portion; and second opposing sidewall sections each having a central portion connected to said bottom wall portion adjacent said first sidewall sections; said second sidewall sections each having a tab portion on each said central portion thereof, said tab portions each having a tip portion at the longitudinal ends thereof, said tip portions projecting in the longitudinal direction of their respective tab portions to over their respective central portions.
Claim 26
Dependent Claim
15 words
A blank as claimed in claim 22, which is formed from paperboard and corrugated paper.
Claim 27
Dependent Claim
22 words
A blank as claimed in claim 22, further comprising reinforcing means secured to said bottom wall portion and two opposite sidewall portions.
Claim 28
Dependent Claim
16 words
A blank as claimed in claim 22, wherein each of said tip portions has an underedge.
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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) | 1992-08-14 | 1993-02-13 | 1993-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-14 | 1997-02-13 | 1997-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-14 | 2001-02-13 | 2001-08-15 | $7700.00 | Window Closed / Lapsed |