US3344647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical device
Assignee: NATIONAL ELECTRIC WELDING MACHINES CO
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Filing: 1965-04-07
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Granted: 1967-10-03
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Expires: 1985-04-07
Abstract
No abstract record available.
Inventors
- 👤 Barron D Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:11
CPC Classifications
A; A22; A22C; A22C7/00; B; B21; B21D; B21D19/00; B21D19/08; B21D53/00; B21D53/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A METHOD FOR FLANGING THE END OF AN ANNULAR SHELL COMPRISING THE STEPS: RADIALLY SUPPORTING THE SHELL; DEFLECTING AT LEAST ONE END OF THE SHELL SUBSTANTIALLY RADIALLY; PREVENTING THE EDGE OF SAID DEFLECTED END FORM CROSSING A RADIALLY MOVABLE CLOSED BOUNDARY OF PREDETERMINED SIZE AND SHAPE.
Claim 2
Independent Claim
46 words
A METHOD FOR FLANGING THE END OF AN ANNULAR SHELL COMPRISING THE STEPS: RADIALLY SUPPORTING THE SHELL; DEFLECTING AT LEAST ONE END OF THE SHELL SUBSTANTIALLY RADIALLY; PREVENTING THE EDGE OF SAID DEFLECTED END FORM CROSSING A RADIALLY MOVABLE CLOSED BOUNDARY OF PREDETERMINED SIZE AND SHAPE.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |