US3828963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recessed crown cap
Assignee: Continental Can Co Inc
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Filing: 1972-02-11
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Granted: 1974-08-13
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Expires: 1992-02-11
Abstract
Abstract This disclosure relates to a roll-on closure for bottles wherein an end panel is connected to a depending skirt through a radiused portion and a transition portion with the radiused portion being recessed relative to the skirt. The cap configuration permits a liner molding punch of the necessary diameter to fully mold the liner to be inserted into the closure. It further permits the molding punch to be substantially centered relative to the end panel whereby a portion of the molded liner engaging the radiused portion is of a substantially uniformed thickness and the thickness thereof may be held to a minimum while still capable of producing optimum sealing results. The roll-on closure construction and liner configuration permits the closure to be applied utilizing much less than normal pressure.
Inventors
- 👤 J Moller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:02
CPC Classifications
B; B65; B65D; B65D53/00; B65D41/00; B65D41/32; B65D41/34; B65D41/348
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
212 words
A roll-on closure prior to being assembled upon an associated bottle comprising an end panel and a depending peripheral skirt, a readily deformable radius portion between said end panel and said peripheral skirt, said radius portion including a first concavely inwardly opening radius most immediately adjacent said end panel and a second concavely outwardly opening radius most immediately adjacent said peripheral skirt, a liner within said roll-on closure having a first liner portion engaging said end panel and a second liner portion engaging said first and second radiuses of said radius portion, said peripheral skirt having an internal surface defining a molding punch centering guide, said first radius being radially inwardly offset from said peripheral skirt and from said molding punch centering guide surface, whereby a liner molding punch will freely pass into said peripheral skirt, the roll-on closure will be substantially centered relative to the molding punch by the molding punch centering guide surface during the molding of the liner, and the molding punch will seat against said second radius thereby assuring a substantially uniform thickness of said second liner portion, and said liner being of a diameter less than that of the interior of said peripheral skirt and being disposed radially inwardly of said second radius of said radius portion.
Claim 2
Dependent Claim
212 words
A roll-on closure prior to being assembled upon an associated bottle comprising an end panel and a depending peripheral skirt, a readily deformable radius portion between said end panel and said peripheral skirt, said radius portion including a first concavely inwardly opening radius most immediately adjacent said end panel and a second concavely outwardly opening radius most immediately adjacent said peripheral skirt, a liner within said roll-on closure having a first liner portion engaging said end panel and a second liner portion engaging said first and second radiuses of said radius portion, said peripheral skirt having an internal surface defining a molding punch centering guide, said first radius being radially inwardly offset from said peripheral skirt and from said molding punch centering guide surface, whereby a liner molding punch will freely pass into said peripheral skirt, the roll-on closure will be substantially centered relative to the molding punch by the molding punch centering guide surface during the molding of the liner, and the molding punch will seat against said second radius thereby assuring a substantially uniform thickness of said second liner portion, and said liner being of a diameter less than that of the interior of said peripheral skirt and being disposed radially inwardly of said second radius of said radius portion.
Claim 3
Dependent Claim
31 words
The roll-on closure as defined in claim 1 wherein said second liner portion terminates at a flat surface between said second concavely outwardly opening radius and said molding punch centering guide.
Claim 4
Dependent Claim
14 words
The roll-on closure as defined in claim 2 wherein said flat surface is planar.
Claim 5
Dependent Claim
30 words
The roll-on closure as defined in claim 2 wherein said first liner portion has a radially inner edge surface aligned with and forming a spaced continuation of said flat surface.
Claim 6
Dependent Claim
23 words
The roll-on closure as defined in claim 4 wherein said flat surface and said inner edge surface lie along a common conical surface.
Claim 7
Dependent Claim
55 words
The roll-on closure as defined in claim 1 including a downwardly and outwardly sloping transition portion between said second concavely outwardly opening radius and said molding punch centering guide, said transition portion having an intermediate diameter corresponding to the intended liner molding punch external diameter, and said liner second portion terminating at said transition portion.
Claim 8
Independent Claim
172 words
A method of molding a liner in a roll-on closure comprising the steps of forming a roll-on closure having an end panel and a depending peripheral skirt, a readily deformable radius portion between the end panel and the peripheral skirt, the radius portion including a first concavely inwardly opening radius most immediately adjacent the end panel and a second concavely outwardly opening radius most immediately adjacent the peripheral skirt, and the peripheral skirt having an internal surface defining a molding punch centering guide; disposing liner material between the interior of the closure and a molding punch, relatively telescopically moving the molding punch and the closure such that the latter is centered relative to the molding punch by means of the molding punch centering guide, seating the molding punch Against the second concavely outwardly opening radius to define an area between the latter, the first concavely inwardly opening radius, the end panel and the terminal end face of the molding punch, and molding the liner material into a liner within the aforementioned area.
Claim 9
Independent Claim
172 words
A method of molding a liner in a roll-on closure comprising the steps of forming a roll-on closure having an end panel and a depending peripheral skirt, a readily deformable radius portion between the end panel and the peripheral skirt, the radius portion including a first concavely inwardly opening radius most immediately adjacent the end panel and a second concavely outwardly opening radius most immediately adjacent the peripheral skirt, and the peripheral skirt having an internal surface defining a molding punch centering guide; disposing liner material between the interior of the closure and a molding punch, relatively telescopically moving the molding punch and the closure such that the latter is centered relative to the molding punch by means of the molding punch centering guide, seating the molding punch Against the second concavely outwardly opening radius to define an area between the latter, the first concavely inwardly opening radius, the end panel and the terminal end face of the molding punch, and molding the liner material into a liner within the aforementioned area.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |