Patent US2922870A successfully refreshed from Google Patents.
US2922870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin metal welding method and apparatus
Assignee: General Dynamics Corp
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Filing: 1958-03-10
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Granted: 1960-01-26
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Expires: 1978-03-10
Abstract
No abstract record available.
Inventors
- 👤 Jay C Collins
- 👤 Seth P Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:55
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/0026; B23K9/0035; H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
THE METHOD OF WELDING PAPER THIN SHEETS OF STAINLESS STEEL, TITANIUM AND SIMILAR METALS TO PRODUCE AN AERODYNAMICALLY SMOOTH WELD COMPRISING THE STEPS OF ABUTTING THE EDGES OF SAID SHEETS TO BE WELDED THROUGHOUT THE LENGTH OF THE WELDING EDGES, CLAMPING SAID EDGES IN VERTICAL ALIGNMENT UNDER A UNIFORMLY APPLIED PRESSURE, APPLYING A LOW CURRENT ARC AT ONE END OF SAID EDGES, APPLYING A HELIUM GAS SHIELD UNIFORMLY ALONG THE UNDERSIDE OF SAID EDGES, APPLYING AN ARGON GAS SHIELD AROUND SAID ARC AND SUBJECTING SAID ARC TO A SUPERIMPOSED HIGH FREQUENCY CURRENT UNTIL IONIZATION OCCURS, THEREAFTER REMOVING SAID HIGH FREQUENCY CURRENT AND REPLACING SAID ARGON GAS SHIELD WITH A HELIUM GAS SHIELD, MOVING SAID ARC AND GAS SHIELD THEREAROUND PROGRESSIVELY ALONG SAID EDGES AT A SLOW TRAVEL SPEED TO ASSURE WELDING PENETRATION THROUGH THE THICKNESS OF SAID EDGES, AND DISSIPATING HEAT FROM SAID EDGES THROUGHOUT THE WELDING THEREOF TO PREVENT BURNING AND WRAPING.
Claim 2
Independent Claim
153 words
THE METHOD OF WELDING PAPER THIN SHEETS OF STAINLESS STEEL, TITANIUM AND SIMILAR METALS TO PRODUCE AN AERODYNAMICALLY SMOOTH WELD COMPRISING THE STEPS OF ABUTTING THE EDGES OF SAID SHEETS TO BE WELDED THROUGHOUT THE LENGTH OF THE WELDING EDGES, CLAMPING SAID EDGES IN VERTICAL ALIGNMENT UNDER A UNIFORMLY APPLIED PRESSURE, APPLYING A LOW CURRENT ARC AT ONE END OF SAID EDGES, APPLYING A HELIUM GAS SHIELD UNIFORMLY ALONG THE UNDERSIDE OF SAID EDGES, APPLYING AN ARGON GAS SHIELD AROUND SAID ARC AND SUBJECTING SAID ARC TO A SUPERIMPOSED HIGH FREQUENCY CURRENT UNTIL IONIZATION OCCURS, THEREAFTER REMOVING SAID HIGH FREQUENCY CURRENT AND REPLACING SAID ARGON GAS SHIELD WITH A HELIUM GAS SHIELD, MOVING SAID ARC AND GAS SHIELD THEREAROUND PROGRESSIVELY ALONG SAID EDGES AT A SLOW TRAVEL SPEED TO ASSURE WELDING PENETRATION THROUGH THE THICKNESS OF SAID EDGES, AND DISSIPATING HEAT FROM SAID EDGES THROUGHOUT THE WELDING THEREOF TO PREVENT BURNING AND WRAPING.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |