Patent US3293400A successfully refreshed from Google Patents.
US3293400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged arc welding process
Assignee: Newport News Shipbuilding and Dry Dock Co
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Filing: 1966-07-06
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Granted: 1966-12-20
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Expires: 1986-07-06
Abstract
No abstract record available.
Inventors
- 👤 Julian P Brogdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:31
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/18; B23K9/182
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE METHOD OF SEAM WELDING METALLIC WORKPIECES BY A SUBMERGED ARC WELDING PROCESS COMPRISING, PROVIDING A CHILL BACK-UP MEANS HAVING AN ELONGATED GROOVE FORMED THEREIN, POSITIONING THE EDGES OF A PAIR OF WORKPIECES ADJACENT ONE ANOTHER WITH SAID EDGES OVER THE GROOVE IN THE BACK-UP MEANS, DISPOSING FLUX BETWEEN SAID EDGES AND IN SAID GROOVE, INSERTING A HOT WIRE BETWEEN SAID EDGES WITHIN SAID FLUX AND SPACED ABOVE SAID BACKUP MEANS, PRODUCING AN ARC FROM SAID HOT WIRE TO MELT THE FLUX AND ADJACENT PORTIONS OF THE WORKPIECES TO PRODUCE A MOLTEN PUDDLE BETWEEN SAID EDGES OF THE WORK-
Claim 2
Independent Claim
99 words
THE METHOD OF SEAM WELDING METALLIC WORKPIECES BY A SUBMERGED ARC WELDING PROCESS COMPRISING, PROVIDING A CHILL BACK-UP MEANS HAVING AN ELONGATED GROOVE FORMED THEREIN, POSITIONING THE EDGES OF A PAIR OF WORKPIECES ADJACENT ONE ANOTHER WITH SAID EDGES OVER THE GROOVE IN THE BACK-UP MEANS, DISPOSING FLUX BETWEEN SAID EDGES AND IN SAID GROOVE, INSERTING A HOT WIRE BETWEEN SAID EDGES WITHIN SAID FLUX AND SPACED ABOVE SAID BACKUP MEANS, PRODUCING AN ARC FROM SAID HOT WIRE TO MELT THE FLUX AND ADJACENT PORTIONS OF THE WORKPIECES TO PRODUCE A MOLTEN PUDDLE BETWEEN SAID EDGES OF THE WORK-
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |