Patent US3868038A successfully refreshed from Google Patents.
US3868038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closures for containers
Assignee: Arconic Closure Systems International UK Ltd
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Filing: 1972-03-13
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Granted: 1975-02-25
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Expires: 1992-03-13
Abstract
Abstract A screw-threaded metal closure for holding products, such as carbonated beverages, under pressure and of the type which is deformed at the top end of its cylindrical skirt during application so as to form a seal with the side of the bottle neck is provided with an upper row of outwardly pressed knurling and a lower row of knurling on an outwardly turned bead at the bottom margin of the skirt to enable a firm manual grasp to be obtained on a closure shell which has an exceptionally small skirt for economy reasons.
Inventors
- 👤 William Henry Hadley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:46
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/0435; B65D41/0464; B65D41/045
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
218 words
A closure blank for application to a screw-threaded bottle by a thread rolling operation wherein the bottle has a cylindrical seal surface above the threads, said blank comprising a single piece cup-shaped metal shell having a top and a skirt, joined together at and continuous with a radiused corner, formed with an outwardly directed bead at its lower margin; and a layer of gasket material bonded to the inner surface of the top and extending around said radiused corner to form an annular seal the invention comprising said shell being formed with an upper band of outwardly pressed knurling at the upper margin of the skirt adjacent said radiused corner radially outwardly of and overlapping at least in part said annular seal and a lower band of knurling in said bead, said outwardly pressed knurling having outwardly extending ribs and the metal therebetween having a diameter approximating that of the lower portion of said skirt the positioning of said annular seal radially inwardly of said outwardly pressed knurling and the knurling on the lower bead permitting material economy by permitting minimum overall closure height consistant with forming a side seal between said gasket material and the cylindrical sealing surface of the bottle while also providing sufficient purchase to allow removal of said closure from the bottle by hand.
Claim 2
Dependent Claim
218 words
A closure blank for application to a screw-threaded bottle by a thread rolling operation wherein the bottle has a cylindrical seal surface above the threads, said blank comprising a single piece cup-shaped metal shell having a top and a skirt, joined together at and continuous with a radiused corner, formed with an outwardly directed bead at its lower margin; and a layer of gasket material bonded to the inner surface of the top and extending around said radiused corner to form an annular seal the invention comprising said shell being formed with an upper band of outwardly pressed knurling at the upper margin of the skirt adjacent said radiused corner radially outwardly of and overlapping at least in part said annular seal and a lower band of knurling in said bead, said outwardly pressed knurling having outwardly extending ribs and the metal therebetween having a diameter approximating that of the lower portion of said skirt the positioning of said annular seal radially inwardly of said outwardly pressed knurling and the knurling on the lower bead permitting material economy by permitting minimum overall closure height consistant with forming a side seal between said gasket material and the cylindrical sealing surface of the bottle while also providing sufficient purchase to allow removal of said closure from the bottle by hand.
Claim 3
Dependent Claim
28 words
A closure blank according to claim 1 further characterised in that the upper band of knurling extends up to the radiused corner joining the top to the skirt.
Claim 4
Dependent Claim
24 words
A closure blank according to claim 1 further characterised in that the vertical extent of the upper band of knurling is about 2 mms.
Claim 5
Dependent Claim
227 words
The combination of a closure thread rolled on a bottle which has an externally threaded neck and a cylindrical sealing surface above the upper limit of the thread and the mouth of the bottle, the closure cap comprising a single piece metal shell having a top and a skirt joined at a radiused corner with an outwardly turned bead at its lower margin; and a layer of gasket material bonded to the inner surface of said shell at least extending around said radiused corner and on the adjoining cylindrical skirt, the invention comprising the closure skirt having a reduced diameter portion lying outwardly of said cylindrical sealing surface radially compressing said gasket material against said sealing surface to form an annular seal, a threaded portion lying immediately above said bead and a narrow upper band of outwardly pressed knurling lying radially outwardly of and overlapping at least in part said annular seal of gasket material between said threaded portion and said reduced diameter portion, the positioning of said annular seal radially inwardly of said outwardly pressed knurling and the knurling on the lower bead permitting material economy by permitting minimum overall closure height consistent with forming a side seal between said gasket material and the cylindrical sealing surface of the bottle while also providing sufficient purchase to allow removal of said closure from the bottle by hand.
Claim 6
Dependent Claim
227 words
The combination of a closure thread rolled on a bottle which has an externally threaded neck and a cylindrical sealing surface above the upper limit of the thread and the mouth of the bottle, the closure cap comprising a single piece metal shell having a top and a skirt joined at a radiused corner with an outwardly turned bead at its lower margin; and a layer of gasket material bonded to the inner surface of said shell at least extending around said radiused corner and on the adjoining cylindrical skirt, the invention comprising the closure skirt having a reduced diameter portion lying outwardly of said cylindrical sealing surface radially compressing said gasket material against said sealing surface to form an annular seal, a threaded portion lying immediately above said bead and a narrow upper band of outwardly pressed knurling lying radially outwardly of and overlapping at least in part said annular seal of gasket material between said threaded portion and said reduced diameter portion, the positioning of said annular seal radially inwardly of said outwardly pressed knurling and the knurling on the lower bead permitting material economy by permitting minimum overall closure height consistent with forming a side seal between said gasket material and the cylindrical sealing surface of the bottle while also providing sufficient purchase to allow removal of said closure from the bottle by hand.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |