US4407426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Round ice cream carton lid
Assignee: WestRock Minnesota Corp
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Filing: 1981-04-13
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Granted: 1983-10-04
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Expires: 2001-04-13
Abstract
Abstract A closure for a cylindrically shaped ice cream carton or the like includes a unitary circular shaped plastic lid provided with a depending skirt portion. The top surface of the lid includes an upwardly and inwardly extending concentric bead inwardly tapered on its outer surface to enhance retaining a plurality of similar lids in stacked relation. The bead rigidifies the lid, enhances nested stacking of lid-carton assemblies and provides a locking and protective recess for labels containing printed indicia. The skirt of the lid includes a lower outwardly tapered inner surface portion for mating with the outer surface of the bead to enhance nested stacking of the lids and to enable the lid to be grasped and readily removed from tight fitting engagement with an ice cream carton. An upper, inner annular recessed portion of the lid skirt accommodates expansion of the ice cream carton without the lid popping off the carton. The plastic injection gate is recessed in the top surface of the lid to protect the label and the base of a carton stacked thereon.
Inventors
- 👤 Edwin C. McLaren
- 👤 David J. Adamek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:27
CPC Classifications
A; A23; A23G; A23G9/00; A23G9/44; A23G9/50; A23G9/503; B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0204; B65D43/0212; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00027; B65D2543/00064; B65D2543/00074; B65D2543/00092; B65D2543/00259; B65D2543/00296; B65D2543/00342; B65D2543/00398; B65D2543/00416; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00527; B65D2543/00537; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/00629; B65D2543/00657; B65D2543/00675; B65D2543/00685; B65D2543/00712; B65D2543/00722; B65D2543/0074; B65D2543/00787; B65D2543/00796
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
201 words
A closure for an ice cream carton or the like of the type having a circular rim defining a dispensing opening therein, comprising: a unitary, circularly shaped lid including a circular disc having on its top surface a concentric continuous uninterrupted bead which has a lower portion and an upwardly and inwardly extending continuous uninterrupted annular upper overhanging extremity portion having an inwardly angled outer surface and an inwardly angled inner surface, said lower portion having an outer angled surface and a substantially straight inner surface, said lid further including an annular skirt portion depending downwardly from the periphery of said circular disc, a smooth annular portion of said top surface extending between said bead and the periphery of said disc, said annular portion being on the same plane as said lid portion, said skirt portion including an upper and lower portion, having a smooth contiguous outer surface and the inner surface of said upper skirt portion being recessed radially inwardly with respect to the inner surface of the lower portion of said skirt to define a locking shoulder therebetween, and the inner surface of said lower skirt portion being flared outwardly at an acute angle with respect to the vertical.
Claim 2
Dependent Claim
201 words
A closure for an ice cream carton or the like of the type having a circular rim defining a dispensing opening therein, comprising: a unitary, circularly shaped lid including a circular disc having on its top surface a concentric continuous uninterrupted bead which has a lower portion and an upwardly and inwardly extending continuous uninterrupted annular upper overhanging extremity portion having an inwardly angled outer surface and an inwardly angled inner surface, said lower portion having an outer angled surface and a substantially straight inner surface, said lid further including an annular skirt portion depending downwardly from the periphery of said circular disc, a smooth annular portion of said top surface extending between said bead and the periphery of said disc, said annular portion being on the same plane as said lid portion, said skirt portion including an upper and lower portion, having a smooth contiguous outer surface and the inner surface of said upper skirt portion being recessed radially inwardly with respect to the inner surface of the lower portion of said skirt to define a locking shoulder therebetween, and the inner surface of said lower skirt portion being flared outwardly at an acute angle with respect to the vertical.
Claim 3
Dependent Claim
50 words
The closure of claim 1 in which a portion of the outer surface of the bead extends upwardly and inwardly at an acute angle with respect to the vertical to mate with the inner surface of the lower skirt portion to enhance nested stacking of the lid with like lids.
Claim 4
Dependent Claim
34 words
The closure of claim 2 in which the acute angle of the inner surface of the lower skirt portion and the acute angle of the outer surface of the bead are substantially the same.
Claim 5
Dependent Claim
11 words
The closure of claim 1 wherein said angle is approximately 15°.
Claim 6
Dependent Claim
26 words
The closure of claim 1 in which the inner annular extremity of the bead is dimensioned to receive the base of a lid-carton composite stacked thereupon.
Claim 7
Dependent Claim
28 words
The closure of claim 1 in which the top surface portion within said concentric bead includes a label which locks under the inner annular extremity of the bead.
Claim 8
Dependent Claim
44 words
The closure of claim 1 in which the top surface portion within said concentric bead includes a recess in which the plastic injection gate is located so that it will not normally damage the label or the base of a lid-carton composite stacked thereupon.
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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |