Patent US4160335A successfully refreshed from Google Patents.
Patent US3853080A successfully refreshed from Google Patents.
US3853080A
Expired / Lapsed
US
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Container end and forming method
Assignee: Rexam Beverage Can Co
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Filing: 1972-10-24
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Granted: 1974-12-10
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Expires: 1992-10-24
Abstract
Abstract This invention relates to a can end construction wherein two folded countersink portions are provided in opposed contiguous relationship to each other and the connecting portion bridging such countersinks is weakened as by scoring. When the weakened score is ruptured thus removing the central panel, both the raw edges formed by such rupture are in part protected by folded portions of each respective countersink. Contacting portions of the opposed countersinks also may overly and protect the scored line as well.
Inventors
- 👤 A Zundel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:26
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/383
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
167 words
The method of forming a container having a central removable panel comprising; partially forming a can end blank into a configuration comprising a horizontal curl portion around the periphery thereof, a vertical seaming wall connected to an inner edge of said curl portion, a horizontal first upper run, a first vertical intermediate run connected thereto at a first foldable corner, a horizontal lower run in turn connected at one end thereof to said first intermediate run, a second vertical intermediate run connected to the other end of said lower run, said second intermediate run in turn connected to a horizontal second upper run, at a second foldable corner, forming a weakened line in said lower run intermediate opposite edges therof and thereafter; deforming said first and second vertical intermediate runs so that said intermediate runs are generally parallel to said horizontal lower run on one side thereof and said first and second foldable corners are located in close proximity to said weakened line on opposite sides thereof.
Claim 2
Independent Claim
167 words
The method of forming a container having a central removable panel comprising; partially forming a can end blank into a configuration comprising a horizontal curl portion around the periphery thereof, a vertical seaming wall connected to an inner edge of said curl portion, a horizontal first upper run, a first vertical intermediate run connected thereto at a first foldable corner, a horizontal lower run in turn connected at one end thereof to said first intermediate run, a second vertical intermediate run connected to the other end of said lower run, said second intermediate run in turn connected to a horizontal second upper run, at a second foldable corner, forming a weakened line in said lower run intermediate opposite edges therof and thereafter; deforming said first and second vertical intermediate runs so that said intermediate runs are generally parallel to said horizontal lower run on one side thereof and said first and second foldable corners are located in close proximity to said weakened line on opposite sides thereof.
Claim 3
Dependent Claim
43 words
The method set forth in claim 1 wherein said weakened line is formed in the upper portion of said lower run and wherein said reforming crushes said first and second foldable corners into deformed contact with each other and overlying said weakened line.
Claim 4
Independent Claim
167 words
The method of forming a container having a central removable panel comprising; partially forming a can end blank into a configuration comprising a horizontal curl portion around the periphery thereof, a vertical seaming wall connected to an inner edge of said curl portion, a horizontal first lower run, a first vertical intermediate run connected thereto at a first foldable corner, a horizontal upper run in turn connected at one end thereof to said first intermediate run, a second vertical intermediate run connected to the other end of said upper run, said second intermediate run in turn connected to a horizontal second lower run, at a second foldable corner; forming a weakened line in said upper run intermediate opposite edges thereof and thereafter; deforming said first and second vertical intermediate runs so that said intermediate runs are generally parallel to said horizontal upper run on one side thereof and said first and second foldable corners are located in close proximity to said weakened line on opposite sIdes thereof.
Claim 5
Independent Claim
167 words
The method of forming a container having a central removable panel comprising; partially forming a can end blank into a configuration comprising a horizontal curl portion around the periphery thereof, a vertical seaming wall connected to an inner edge of said curl portion, a horizontal first lower run, a first vertical intermediate run connected thereto at a first foldable corner, a horizontal upper run in turn connected at one end thereof to said first intermediate run, a second vertical intermediate run connected to the other end of said upper run, said second intermediate run in turn connected to a horizontal second lower run, at a second foldable corner; forming a weakened line in said upper run intermediate opposite edges thereof and thereafter; deforming said first and second vertical intermediate runs so that said intermediate runs are generally parallel to said horizontal upper run on one side thereof and said first and second foldable corners are located in close proximity to said weakened line on opposite sIdes thereof.
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |