US3687355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Egg carton
Assignee: Thermo Trim Inc
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Filing: 1971-02-10
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Granted: 1972-08-29
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Expires: 1991-02-10
Abstract
Abstract A molded egg carton has egg-shaped sockets in the bottom half of the base and bracing walls forming square chambers above the sockets in the upper half of the base. This makes the base more rigid for better protection of the eggs and results in other advantages including more room for large eggs.
Inventors
- 👤 Kurg G Dahlberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:36
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/30; B65D85/32; B65D85/324
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
253 words
In a molded egg carton having a base, a latch flap at the upper front of said base, and a cover at the upper back of said base, the improvement comprising: a. the bottom region of said base being formed as a plurality of generally egg-shaped sockets deep enough to receive and support the lower ends of eggs placed in said base; b. the tops of said sockets being generally circular and formed to lie in a plane parallel with the top of said base in a region between the top and bottom of said base; c. lateral walls in said plane extending outward from said socket tops to form generally square regions centered around said sockets; d. sides of said square regions being aligned from front to back of said base; e. substantially plane and generally upright front walls extending from the fronts of the forward ones of said square regions to said upper front of said base; f. substantially plane and generally upright back walls extending from the backs of the rearward ones of said square regions to said upper back of said base; g. substantially plane, bracing walls extending from said front walls to said back walls and from said aligned sides of said square regions to the region of the top of said base where pairs of said bracing walls join in ridges; and h. divider walls extending up from said lateral walls between the backs of said forward square regions and the fronts of said rearward square regions.
Claim 2
Dependent Claim
253 words
In a molded egg carton having a base, a latch flap at the upper front of said base, and a cover at the upper back of said base, the improvement comprising: a. the bottom region of said base being formed as a plurality of generally egg-shaped sockets deep enough to receive and support the lower ends of eggs placed in said base; b. the tops of said sockets being generally circular and formed to lie in a plane parallel with the top of said base in a region between the top and bottom of said base; c. lateral walls in said plane extending outward from said socket tops to form generally square regions centered around said sockets; d. sides of said square regions being aligned from front to back of said base; e. substantially plane and generally upright front walls extending from the fronts of the forward ones of said square regions to said upper front of said base; f. substantially plane and generally upright back walls extending from the backs of the rearward ones of said square regions to said upper back of said base; g. substantially plane, bracing walls extending from said front walls to said back walls and from said aligned sides of said square regions to the region of the top of said base where pairs of said bracing walls join in ridges; and h. divider walls extending up from said lateral walls between the backs of said forward square regions and the fronts of said rearward square regions.
Claim 3
Dependent Claim
27 words
The carton of claim 1 wherein said lateral walls are formed to extend past said divider walls between said forward square regions and said rearward square regions.
Claim 4
Dependent Claim
22 words
The carton of claim 1 wherein the tops of said ridges are formed with notches centered between adjacent ones of said sockets.
Claim 5
Dependent Claim
19 words
The carton of claim 3 wherein connection walls forming said notches extend between said pairs of said bracing walls.
Claim 6
Dependent Claim
24 words
The carton of claim 1 wherein said plAne of said lateral walls is about midway between said top and said bottom of said base.
Claim 7
Dependent Claim
48 words
The carton of claim 1 wherein said front walls and said back walls of the endmost of said square regions are joined by end walls extending from said lateral walls to the top of said base and formed to curve inward in the region of said divider walls.
Claim 8
Dependent Claim
28 words
The carton of claim 1 wherein said front walls, said back walls, said bracing walls, and said divider walls are all slightly indented to accommodate relatively large eggs.
Claim 9
Dependent Claim
22 words
The carton of claim 1 wherein said latch flap is formed with indentations disposed adjacent said sockets to accommodate relatively large eggs.
Claim 10
Dependent Claim
79 words
The carton of claim 1 wherein said latch flap has walled recesses with upper edges near the free edge of said flap for forming latch bars, said cover has inwardly indented walls leading to apertures near the top of said cover, and the upper edges of said indented walls are disposed to latch under said latch bars as said indented walls move into said flap recesses and said latch bars move into said apertures as said carton is closed.
Claim 11
Dependent Claim
46 words
The carton of claim 1 wherein said plane of said lateral walls is about midway between said top and said bottom of said base, and said lateral walls are formed to extend past said divider walls between said forward square regions and said rearward square regions.
Claim 12
Dependent Claim
36 words
The carton of claim 10 wherein the tops of said ridges are formed with notches centered between adjacent ones of said sockets, and connection walls forming said notches extend between said pairs of said bracing walls.
Claim 13
Dependent Claim
48 words
The carton of claim 11 wherein said front walls and said back walls of the endmost of said square regions are joined by end walls extending from said lateral walls to said top of said base and formed to curve inward in the region of said divider walls.
Claim 14
Dependent Claim
79 words
The carton of claim 12 wherein said latch flap has walled recesses with upper edges near the free edge of said flap for forming latch bars, said cover has inwardly indented walls leading to apertures near the top of said cover, and the upper edges of said indented walls are disposed to latch under said latch bars as said indented walls move into said flap recesses and said latch bars move into said apertures as said carton is closed.
Claim 15
Dependent Claim
31 words
The carton of claim 13 wherein said front walls, said back walls, said bracing walls, said divider walls, and said latch flap are all slightly indented to accommodate relatively large eggs.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |