Patent US3204595A successfully refreshed from Google Patents.
US3204595A
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Clinched seam formation
Assignee: Primerica Inc
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Filing: 1961-10-04
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Granted: 1965-09-07
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Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Brookson William Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:09
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/26; B21D51/30; B21D51/32; B65; B65B; B65B7/00; B65B7/16; B65B7/28; B65B7/2842; B65B7/285; B65B7/2857
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF FORMING A CLINCHED SEAM, WHICH COMPRISES THE STEPS OF CLAMPING A FLANGES CAN END HAVING SEALING MATERIAL THEREON AND A FLANGED CAN BODY TOGETHER, ROLLING THE FLANGES OF SAID CAN END AND SAID CAN BODY TOGETHER TO PRODUCE ALTERNATING LOOSELY ROLLED SEAM PORTIONS, AND TIGHTLY ROLLED SEAM PORTIONS WHEREIN SAID CAN END FLANGE AND SAID SEALING MATERIAL THEREON ARE MAINTAINED IN ENGAGEMENT WITH SAID CAN BODY FLANGE, AND SIMULTANEOUSLY LIFTING SAID CAN END FLANGE IN SAID LOOSELY ROLLED SEAM PORTIONS TO MOVE SAID SEALING MATERIAL THEREON OUT OF ENGAGEMENT WITH SAID CAN BODY FLANGE.
Claim 2
Independent Claim
97 words
THE METHOD OF FORMING A CLINCHED SEAM, WHICH COMPRISES THE STEPS OF CLAMPING A FLANGES CAN END HAVING SEALING MATERIAL THEREON AND A FLANGED CAN BODY TOGETHER, ROLLING THE FLANGES OF SAID CAN END AND SAID CAN BODY TOGETHER TO PRODUCE ALTERNATING LOOSELY ROLLED SEAM PORTIONS, AND TIGHTLY ROLLED SEAM PORTIONS WHEREIN SAID CAN END FLANGE AND SAID SEALING MATERIAL THEREON ARE MAINTAINED IN ENGAGEMENT WITH SAID CAN BODY FLANGE, AND SIMULTANEOUSLY LIFTING SAID CAN END FLANGE IN SAID LOOSELY ROLLED SEAM PORTIONS TO MOVE SAID SEALING MATERIAL THEREON OUT OF ENGAGEMENT WITH SAID CAN BODY FLANGE.
References Cited (Backward Citations)
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |