US4300700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closable food container body and utensil enclosing cover assembly
Assignee: CONTAINER DYNAMICS Inc
•
Filing: 1980-06-26
•
Granted: 1981-11-17
•
Expires: 2000-06-26
Abstract
Abstract A closable food container body and utensil enclosing cover assembly of generally rectangular outline and in which the cover assembly is received by snap fit in the opening of the container body to seal the contents thereof. Both the cover assembly and the container body are formed with overlying coextensive peripheral flanges which may be planar to inhibit opening of the container once closed, deformed to facilitate opening of the container, formed to augment removable retention of the cover and the container body, or formed to provide a tamper proof closure. The cover assembly includes a utensil recess for receiving a spoon, a fork, or a drinking straw and is closed by a removable cover sheet secured to a central cover member panel about the periphery of the utensil recess but having a loose, unattached peripheral portion to facilitate grasping for manual removal to gain access to the utensil.
Inventors
- 👤 Henry M. Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:40
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0204; B65D43/021; B65D51/00; B65D51/24; B65D51/246; B65D51/247; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/00074; B65D2543/00101; B65D2543/00259; B65D2543/00296; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00509; B65D2543/00537; B65D2543/00546; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/0062; B65D2543/00675; B65D2543/00685; B65D2543/00703; B65D2543/00712; B65D2543/00722; B65D2543/00731; B65D2543/00787; B65D2543/00796; B65D2543/00814; B65D2543/00824; B65D2543/00944
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
267 words
A closable container comprising: a container body, substantialy rectangular in outline, including a bottom wall and four upstanding sidewalls joined by bottom corners to said bottom wall and by upstanding corners to each other, each of said upstanding corners being rounded, the upper edges of said upstanding sidewalls and corners circumscribing a container opening and having a continuous seating formation to define, in vertical section, an interior concave surface extending upwardly from a plane spaced below the top edge of said upstanding sidewalls and corners to an outwardly projecting peripheral body flange at the top edge of said upstanding walls and corners; a cover having a central panel and a peripheral edge formation to seal within said seating formation, said edge formation having an edge wall portion depending from an outwardly projecting cover flange, said edge wall portion having, in vertical section, an exterior convex surface; said seating formation and said edge formation being generally square in outline in which the sides of said outline are cambered outwardly and joined at rounded corners, thereby to provide for development of opposing tensile and compressive hoop stresses in said seating formation and said peripheral edge formation, respectively upon insertion of said cover into said seating formation so that said exterior convex surface nests within and seals against said interior concave surface continuously about said container opening; means defining a utensil recess in said central panel and extending diagonally of said cover, said recess having a floor joined to and circumscribed by marginal sidewalls spaced from said peripheral edge formation; and means for releasably retaining a utensil in said recess.
Claim 2
Dependent Claim
267 words
A closable container comprising: a container body, substantialy rectangular in outline, including a bottom wall and four upstanding sidewalls joined by bottom corners to said bottom wall and by upstanding corners to each other, each of said upstanding corners being rounded, the upper edges of said upstanding sidewalls and corners circumscribing a container opening and having a continuous seating formation to define, in vertical section, an interior concave surface extending upwardly from a plane spaced below the top edge of said upstanding sidewalls and corners to an outwardly projecting peripheral body flange at the top edge of said upstanding walls and corners; a cover having a central panel and a peripheral edge formation to seal within said seating formation, said edge formation having an edge wall portion depending from an outwardly projecting cover flange, said edge wall portion having, in vertical section, an exterior convex surface; said seating formation and said edge formation being generally square in outline in which the sides of said outline are cambered outwardly and joined at rounded corners, thereby to provide for development of opposing tensile and compressive hoop stresses in said seating formation and said peripheral edge formation, respectively upon insertion of said cover into said seating formation so that said exterior convex surface nests within and seals against said interior concave surface continuously about said container opening; means defining a utensil recess in said central panel and extending diagonally of said cover, said recess having a floor joined to and circumscribed by marginal sidewalls spaced from said peripheral edge formation; and means for releasably retaining a utensil in said recess.
Claim 3
Dependent Claim
42 words
The apparatus recited in claim 1, wherein said means for releasably retaining a utensil in said recess comprises a removable cover sheet releasably attached to said central panel in an area extending about said marginal sidewalls and within said peripheral edge formation.
Claim 4
Dependent Claim
56 words
The apparatus recited in claim 2, wherein said central panel is peripherally spaced from said cover flange by a continuous re-entrant groove formation defined on one side by said edge wall portion, said marginal sidewalls of said recess depending from said central panel in the same direction as said edge walls depend from said cover flange.
Claim 5
Dependent Claim
65 words
The apparatus recited in claim 3, wherein said removable cover sheet is coextensive with the area circumscribed by and overlies said cover flange, the area to which said removable cover sheet is releasably attached being restricted to the area of said central panel, thereby providing a loose peripheral portion of said cover sheet to be grasped for removal thereof from said cover and said recess.
Claim 6
Independent Claim
34 words
The apparatus recited in either of claims 2 or 3, wherein said central panel includes a straw penetrable opening spaced from said recess, said cover sheet being releasably secured initially over said penetrable opening.
Claim 7
Dependent Claim
34 words
The apparatus recited in claim 5, wherein said cover flange and said body flange are continuously coextensive and flat to overlie each other in a manner impeding removal of said cover from said body.
Claim 8
Dependent Claim
47 words
The apparatus recited in claim 1, wherein said central panel lies in a plane spaced below the bottom of said edge wall portion, said recess opening through the bottom of said cover so that the floor of said recess lies near the plane of said cover flange.
Claim 9
Dependent Claim
37 words
The apparatus recited in claim 5, wherein said means for retaining a utensil in said recess comprises a removable cover sheet releasably attached to the underside of said central panel about the marginal sidewalls of said recess.
Claim 10
Independent Claim
37 words
The apparatus recited in either of claims 1, 2, or 7, wherein one of said cover and body flanges includes a deformation to separate at least a portion of said flanges to facilitate removal of said cover.
Claim 11
Dependent Claim
27 words
The apparatus recited in claim 9, wherein said deformation comprises a notch in said body flange thereby to present a portion of said cover flange for grasping.
Claim 12
Dependent Claim
22 words
The apparatus recited in claim 9, wherein said deformation comprises a dimple-like projection struck from the plane of one of said flanges.
Claim 13
Dependent Claim
16 words
The apparatus recited in claim 9, wherein one of said flanges includes a stepped peripheral portion.
Claim 14
Dependent Claim
14 words
The apparatus recited in claim 12, including a series of spaced notch-like stepped portions.
Claim 15
Independent Claim
30 words
The apparatus recited in either of claims 1, 2, or 7, including interlocking formations in said cover and body flanges to augment the retention of said cover and said body.
Claim 16
Dependent Claim
20 words
The apparatus recited in claim 14, wherein said interlocking formations are undercut to prevent re-closure once said cover is opened.
Claim 17
Dependent Claim
150 words
A generally square cover assembly for a container body having a peripheral undercut seating formation, said assembly comprising: a cover member having a central panel and a peripheral edge formation to seal within the seating formation of a container body, said edge formation having an edge wall portion depending from an outwardly projecting cover flange and having, in vertical section, an exterior convex surface; a re-entrant utensil recess formed in said central panel and extending diagonally of said cover assembly, said utensil recess having a floor and marginal sidewalls spaced from said edge wall portion thereby to present a portion of said central panel completely about said recess between said marginal sidewalls and said edge wall portion; and a removable cover sheet releasably secured to said central panel and extending loosely beyond the edges of said central panel to provide a marginal grasping edge for removal of said cover sheet.
Claim 18
Dependent Claim
150 words
A generally square cover assembly for a container body having a peripheral undercut seating formation, said assembly comprising: a cover member having a central panel and a peripheral edge formation to seal within the seating formation of a container body, said edge formation having an edge wall portion depending from an outwardly projecting cover flange and having, in vertical section, an exterior convex surface; a re-entrant utensil recess formed in said central panel and extending diagonally of said cover assembly, said utensil recess having a floor and marginal sidewalls spaced from said edge wall portion thereby to present a portion of said central panel completely about said recess between said marginal sidewalls and said edge wall portion; and a removable cover sheet releasably secured to said central panel and extending loosely beyond the edges of said central panel to provide a marginal grasping edge for removal of said cover sheet.
Claim 19
Dependent Claim
18 words
The apparatus recited in claim 16, wherein said utensil recess opens to the top of said cover member.
Claim 20
Dependent Claim
28 words
The apparatus recited in claim 17, wherein said removable cover sheet is of the same size and peripheral shape as that of the flange on said cover member.
Claim 21
Dependent Claim
18 words
The apparatus recited in claim 16, wherein said utensil recess opens to the bottom of said cover member.
Claim 22
Independent Claim
24 words
The apparatus recited in either of claims 16, 17, or 18, wherein the plane of said central panel is elevated above said cover flange.
References Cited (Backward Citations)
US2901098A
Cited
US3401825A
Cited
US3448888A
Cited
US3817420A
Cited
US3874554A
Cited
US4006839A
Cited
US4124141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |