Patent US3603499A successfully refreshed from Google Patents.
US3603499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Egg carton cells
Assignee: Individual
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Filing: 1969-06-05
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Granted: 1971-09-07
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Expires: 1989-06-05
Abstract
Abstract Egg receiving cells of egg cartons are disclosed that have a funnel portion, a closed bottom end portion, and an intermediate portion defining with the bottom end portion an annular support for the lower end of an egg, the upper end of which is in contact with the funnel portion. Desirably the cell wall is thicker in the intermediate portion than it is in the funnel portion.
Inventors
- 👤 Gerald A Snow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:16
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/30; B65D85/32; B65D85/324
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
123 words
In an expanded foam plastic egg carton, a plurality of egg receiving cells arranged in parallel rows, each cell comprising a funnel portion, a closed bottom end portion dimensioned to receive the lower end of any egg the cell is designed to receive, and an intermediate annular cushion portion in which the wall structure is substantially thicker than the wall thickness of the funnel portion and is downwardly and inwardly curved and merges with said funnel and bottom end portions, the curvature of the intermediate portion being approximately that of the received portion of said largest egg, the junction between the intermediate and bottom end portions providing an annular support above the bottom of the cell for the lower end of the egg.
Claim 2
Dependent Claim
123 words
In an expanded foam plastic egg carton, a plurality of egg receiving cells arranged in parallel rows, each cell comprising a funnel portion, a closed bottom end portion dimensioned to receive the lower end of any egg the cell is designed to receive, and an intermediate annular cushion portion in which the wall structure is substantially thicker than the wall thickness of the funnel portion and is downwardly and inwardly curved and merges with said funnel and bottom end portions, the curvature of the intermediate portion being approximately that of the received portion of said largest egg, the junction between the intermediate and bottom end portions providing an annular support above the bottom of the cell for the lower end of the egg.
Claim 3
Dependent Claim
82 words
The egg carton of claim 1 in which the wall structure of the funnel portion is downwardly and inwardly inclined at an acute angle relative to the cell axis to provide a cross-sectional area that decreases from that greater than the maximum cross-sectional area of the largest egg the cell is designed to receive to a cross-sectional area less than said maximum cross-sectional area of the egg to provide an annular egg-supporting shoulder at the junction of the funnel and intermediate portion.
Claim 4
Dependent Claim
39 words
The egg carton of claim 1 in which the wall structure of the bottom end portion is downwardly and inwardly inclined at an acute angle relative to the cell axis to define with the intermediate portion the annular support.
Claim 5
Dependent Claim
90 words
The egg carton of claim 1 in which the wall structure of the funnel portion is downwardly and inwardly inclined at an acute angle relative to the cell axis to provide a cross-sectional area that decreases from that greater than the maximum cross-sectional area of the largest egg the cell is designed to receive to a cross-sectional area less than said maximum cross-sectional area of the egg, and the wall structure of the bottom end portion is downwardly and inwardly inclined at an acute angle relative to the cell axis.
Claim 6
Dependent Claim
32 words
The egg carton of claim 4 in which the angle of the wall structure of the bottom end portion is greater than that of the wall structure of the upper end portion.
Claim 7
Dependent Claim
34 words
The egg carton of claims 5 in which the angle of the upper end portion is in the neighborhood of 10* and that of the lower end portion is in the neighborhood of 17*.
Claim 8
Dependent Claim
70 words
The egg carton of claim 1 in which the bottom wall of the bottom end portion includes an upstanding cushion engageable by the lower end of an egg and being in the form of a ring dimensioned to provide centering support for the lower end of an egg whose dimensions are such that it does not engage the cell wall at the junction of the intermediate and bottom end portions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |