US4705183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant closure construction
Assignee: Silgan Holdings Inc
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Filing: 1986-08-27
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Granted: 1987-11-10
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Expires: 2006-08-27
Abstract
Abstract A closure panel for a composite closure which is formed of a corrosive metal and while the metal of the closure panel is coated on both edges, in the formation thereof a raw edge develops. In lieu of a straight peripheral flange terminating in such raw edge, the peripheral flange has been modified to terminate in a curl with the raw edge being protected by the curl.
Inventors
- 👤 John J. Moloney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:24
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/32; B65D41/34; B65D41/3442; B65D41/3447; B65D51/00; B65D51/14; B65D51/145
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
75 words
An end panel for use in combination with a plastic fitment to form a composite closure, said end panel being formed of a metal subject to corrosion and having a peripheral cut raw edge, said end panel being improved by said peripheral edge terminating in a curl of which said cut raw edge is a terminal part and wherein said cut raw edge is at least in part masked by adjacent portions of said curl.
Claim 2
Dependent Claim
75 words
An end panel for use in combination with a plastic fitment to form a composite closure, said end panel being formed of a metal subject to corrosion and having a peripheral cut raw edge, said end panel being improved by said peripheral edge terminating in a curl of which said cut raw edge is a terminal part and wherein said cut raw edge is at least in part masked by adjacent portions of said curl.
Claim 3
Dependent Claim
25 words
An end panel according to claim 1 wherein said end panel includes a depending peripheral wall, and said curl being carried by said peripheral wall.
Claim 4
Dependent Claim
17 words
An end panel according to claim 2 wherein said curl projects radially outwardly of said peripheral wall.
Claim 5
Dependent Claim
29 words
An end panel according to claim 2 wherein said curl projects radially outwardly of said peripheral wall, and said raw edge is disposed radially outwardly of said peripheral flange.
Claim 6
Dependent Claim
29 words
An end panel according to claim 2 wherein said curl projects radially outwardly of said peripheral wall, and said raw edge is disposed radially inwardly of said peripheral flange.
Claim 7
Dependent Claim
18 words
An end panel according to claim 2 wherein said curl is generally centered relative to said peripheral wall.
Claim 8
Dependent Claim
30 words
An end panel according to claim 2 wherein said curl is generally centered relative to said peripheral wall, and said raw edge is disposed radially inwardly of said peripheral flange.
Claim 9
Dependent Claim
48 words
An end panel according to claim 6 wherein on an undersurface thereof there is an annular pocket for a gasket, said pocket being in part defined by a radially inner portion of said curl with said curl forming means for facilitating application of a gasket by spin lining.
Claim 10
Dependent Claim
34 words
An end panel according to claim 3 in combination with a plastic fitment, said curl forming a bearing surface engaging said fitment for facilitating relative rotary movement between said fitment and said end panel.
Claim 11
Dependent Claim
29 words
A combination in accordance with claim 9 wherein said fitment has lug means engaging said curl for limiting upward axial movement of said fitment relative to said end panel.
References Cited (Backward Citations)
US3307728A
Cited
US3933267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-09 | 1991-05-11 | 1991-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-09 | 1995-05-11 | 1995-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-09 | 1999-05-11 | 1999-11-10 | $7700.00 | Window Closed / Lapsed |