US3672560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locks for egg carton covers
Assignee: Continental Can Co Inc
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Filing: 1969-12-31
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Granted: 1972-06-27
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Expires: 1989-12-31
Abstract
Abstract This disclosure relates to one-piece molded plastic egg cartons in which a cover is hingeably connected to a carton body, and side walls of the cover and carton body remote from the hinge means are provided with interlocking means for maintaining the cover in its closed position. The interlocking means are defined by posts which project above the terminal edge of the carton body and are interlockably received within recess means or openings of the carton side wall. The posts and covers are preferably constructed from flexible and reboundable material to permit temporary deformation incident to the opening and closing of the carton.
Inventors
- 👤 Harold W Voorhis
- 👤 Bradford Post
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:06
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/30; B65D85/32; B65D85/324
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
A carton comprising a body defined by a pair of end walls, a pair of side walls, and a bottom wall, a cover defined by a pair of end walls, a pair of side walls, and a top wall, means hingeably connecting a side wall of said cover to a side wall of said body whereby said cover may be swung between open and closed positions relative to said body, and means for interlockingly securing the other of said body and cover side walls to each other in said closed position, said securing means being defined by post means projecting beyond a terminal edge of said other body side wall, recess means in said other cover side wall, at least a portion of said post means being disposed within said recess means in said closed position, and said recess means are slots arranged in at least a single pair diverging toward the terminal edge of said other cover side wall.
Claim 2
Dependent Claim
160 words
A carton comprising a body defined by a pair of end walls, a pair of side walls, and a bottom wall, a cover defined by a pair of end walls, a pair of side walls, and a top wall, means hingeably connecting a side wall of said cover to a side wall of said body whereby said cover may be swung between open and closed positions relative to said body, and means for interlockingly securing the other of said body and cover side walls to each other in said closed position, said securing means being defined by post means projecting beyond a terminal edge of said other body side wall, recess means in said other cover side wall, at least a portion of said post means being disposed within said recess means in said closed position, and said recess means are slots arranged in at least a single pair diverging toward the terminal edge of said other cover side wall.
Claim 3
Dependent Claim
176 words
A carton comprising a body defined by a pair of end walls, a pair of side walls, and a bottom wall, a cover defined by a pair of end walls, a pair of side walls, and a top wall, means hingeably connecting a side wall of said cover to a side wall of said body whereby said cover may be swung between open and closed positions relative to said body, and means for interlockingly securing the other of said body and cover side walls to each other in said closed position, said securing means being defined by post means projecting beyond a terminal edge of said other body side wall, recess means in said other cover side wall, at least a portion of said post means being disposed within said recess means in said closed position, said slots are arranged in a plurality of pairs, each pair diverges toward the terminal edge of said other cover side wall, and each post means portion is a pair of spaced side walls received in each pair of slots.
Claim 4
Dependent Claim
176 words
A carton comprising a body defined by a pair of end walls, a pair of side walls, and a bottom wall, a cover defined by a pair of end walls, a pair of side walls, and a top wall, means hingeably connecting a side wall of said cover to a side wall of said body whereby said cover may be swung between open and closed positions relative to said body, and means for interlockingly securing the other of said body and cover side walls to each other in said closed position, said securing means being defined by post means projecting beyond a terminal edge of said other body side wall, recess means in said other cover side wall, at least a portion of said post means being disposed within said recess means in said closed position, said slots are arranged in a plurality of pairs, each pair diverges toward the terminal edge of said other cover side wall, and each post means portion is a pair of spaced side walls received in each pair of slots.
Claim 5
Dependent Claim
143 words
A carton comprising a body defined by a pair of end walls, a pair of side walls, and a bottom wall, a cover defined by a pair of end walls, a pair of side walls, and a top wall, means hingeably connecting a side wall of said cover to a side wall of said body whereby said cover may be swung between open and closed positions relative to said body, and means for interlockingly securing the other of said body and cover side walls to each other in said closed position, said securing means being defined by post means projecting beyond a terminal edge of said other body side wall, recess means in said other cover side wall, at least a portion of said post means being disposed within said recess means in said closed position, and said post means portion is bifurcated.
Claim 6
Dependent Claim
143 words
A carton comprising a body defined by a pair of end walls, a pair of side walls, and a bottom wall, a cover defined by a pair of end walls, a pair of side walls, and a top wall, means hingeably connecting a side wall of said cover to a side wall of said body whereby said cover may be swung between open and closed positions relative to said body, and means for interlockingly securing the other of said body and cover side walls to each other in said closed position, said securing means being defined by post means projecting beyond a terminal edge of said other body side wall, recess means in said other cover side wall, at least a portion of said post means being disposed within said recess means in said closed position, and said post means portion is bifurcated.
Claim 7
Dependent Claim
165 words
A carton comprising a body defined by a pair of end walls, a pair of side walls, and a bottom wall, a cover defined by a pair of end walls, a pair of side walls, and a top wall, means hingeably connecting a side wall of said cover to a side wall of said body whereby said cover may be swung between open and closed positions relative to said body, and means for interlockingly securing the other of said body and cover side walls to each other in said closed position, said securing means being defined by post means projecting beyond a terminal edge of said other body side wall, recess means in said other cover side wall, at least a portion of said post means being disposed within said recess means in said closed position, said post means portion is bifurcated to define a pair of legs, and said recess means are a pair of openings each of which receives one of said legs.
Claim 8
Dependent Claim
165 words
A carton comprising a body defined by a pair of end walls, a pair of side walls, and a bottom wall, a cover defined by a pair of end walls, a pair of side walls, and a top wall, means hingeably connecting a side wall of said cover to a side wall of said body whereby said cover may be swung between open and closed positions relative to said body, and means for interlockingly securing the other of said body and cover side walls to each other in said closed position, said securing means being defined by post means projecting beyond a terminal edge of said other body side wall, recess means in said other cover side wall, at least a portion of said post means being disposed within said recess means in said closed position, said post means portion is bifurcated to define a pair of legs, and said recess means are a pair of openings each of which receives one of said legs.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |