Patent US3077171A successfully refreshed from Google Patents.
US3077171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming the side seam of a can body
Assignee: Primerica Inc
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Filing: 1959-04-09
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Granted: 1963-02-12
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Expires: 1979-04-09
Abstract
No abstract record available.
Inventors
- 👤 Gotsch Lenard Paul
- 👤 Wobbe Delbert Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:22
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/14; B23K1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A METHOD OF FORMING A HERMETIC SIDE SEAM FOR SHEET METAL CAN BODIES AT HIGH SPEED COMPRISING PASSING A PLURALITY OF SHEET METAL CAN BODIES IN END-TO-END RELATION ALONG A PREDETERMINED STRAIGHT LINE PATH OF TRAVEL, EACH OF SAID BODIES HAVING A PAIR OF UNBONDED LONGITUDINAL MARGINS CONTIGUOUS ONE ANOTHER, WELDING SAID CONTIGUOUS MARGINS AT A RATE OF AT LEAST 200 CAN BODIES PER MINUTE BY MEANS OF ELECTRICITY WHEREBY SAID MARGINS ARE HEATED TO AT LEAST 1,000* F. AND FUSED TO FORM A SIDE SEAM, AND IN RAPID SEQUENCE IMMEDIATELY AFTER SAID WELDING WHILE MAINTAINING SAID BODIES IN SAID RELATION, SAID PATH OF TRAVEL AND AT SAID RATE COOLING SAID SIDE SEAM TO FROM 300 TO 600*F. AND APPLYING A SOLVENT-FREE 100% SOLIDS LAYER OF A SYNTHETIC RESIN AT LEAST ONE MIL THICK OVER SAID COOLED SIDE SEAM, AND ADHERING SAID LAYER TO SAID SIDE SEAM TO SEAL ANY DISCONTINUITIES IN SAID SEAM.
Claim 2
Independent Claim
154 words
A METHOD OF FORMING A HERMETIC SIDE SEAM FOR SHEET METAL CAN BODIES AT HIGH SPEED COMPRISING PASSING A PLURALITY OF SHEET METAL CAN BODIES IN END-TO-END RELATION ALONG A PREDETERMINED STRAIGHT LINE PATH OF TRAVEL, EACH OF SAID BODIES HAVING A PAIR OF UNBONDED LONGITUDINAL MARGINS CONTIGUOUS ONE ANOTHER, WELDING SAID CONTIGUOUS MARGINS AT A RATE OF AT LEAST 200 CAN BODIES PER MINUTE BY MEANS OF ELECTRICITY WHEREBY SAID MARGINS ARE HEATED TO AT LEAST 1,000* F. AND FUSED TO FORM A SIDE SEAM, AND IN RAPID SEQUENCE IMMEDIATELY AFTER SAID WELDING WHILE MAINTAINING SAID BODIES IN SAID RELATION, SAID PATH OF TRAVEL AND AT SAID RATE COOLING SAID SIDE SEAM TO FROM 300 TO 600*F. AND APPLYING A SOLVENT-FREE 100% SOLIDS LAYER OF A SYNTHETIC RESIN AT LEAST ONE MIL THICK OVER SAID COOLED SIDE SEAM, AND ADHERING SAID LAYER TO SAID SIDE SEAM TO SEAL ANY DISCONTINUITIES IN SAID SEAM.
References Cited (Backward Citations)
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US2047964A
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US2078546A
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US2797843A
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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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |