Patent US3122830A successfully refreshed from Google Patents.
US3122830A
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Method for forming an integral flange on a metal tube
Assignee: Lockheed Martin Corp
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Filing: 1959-06-08
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Granted: 1964-03-03
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Expires: 1979-06-08
Abstract
No abstract record available.
Inventors
- 👤 Charles A Dawson
- 👤 Raymond W Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:37
CPC Classifications
B; B21; B21D; B21D19/00; B21D19/02; B21D19/04; B21D19/046; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD OF FORMING AN INTEGRAL CIRCUMFERENTIAL FLANGE ON THE END OF A STAINLESS STEEL TUBE COMPRISING THE STEPS OF HEAT ANNEALING THE END OF THE TUBE ON WHICH THE FLANGE IS TO BE FORMED, FORMING A CONTINUOUS CIRCUMFERENTIAL EXTERIOR BEAD NEAR THE END, GRIPPING THE TUBE RIGIDLY BY MEANS OF THE BEAD, APPLYING THE HEAT TO THE END AREA, ROLLING A FLANGE ON THE END SO THAT THERE IS A FACE SUBSTANTIALLY PERPENDICULAR TO THE AXIS AT THE END OF THE TUBE, AND GRINDING THE FACE SMOOTH.
Claim 2
Independent Claim
88 words
A METHOD OF FORMING AN INTEGRAL CIRCUMFERENTIAL FLANGE ON THE END OF A STAINLESS STEEL TUBE COMPRISING THE STEPS OF HEAT ANNEALING THE END OF THE TUBE ON WHICH THE FLANGE IS TO BE FORMED, FORMING A CONTINUOUS CIRCUMFERENTIAL EXTERIOR BEAD NEAR THE END, GRIPPING THE TUBE RIGIDLY BY MEANS OF THE BEAD, APPLYING THE HEAT TO THE END AREA, ROLLING A FLANGE ON THE END SO THAT THERE IS A FACE SUBSTANTIALLY PERPENDICULAR TO THE AXIS AT THE END OF THE TUBE, AND GRINDING THE FACE SMOOTH.
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) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |