Patent US3213261A successfully refreshed from Google Patents.
US3213261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two length gap fusion spot welding method
Assignee: Airco Inc
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Filing: 1962-07-31
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Granted: 1965-10-19
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Expires: 1982-07-31
Abstract
No abstract record available.
Inventors
- 👤 Nelson E Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:47
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD OF PLUG WELDING WITH AN ARC ELECTRODE COMPRISING THE STEPS OF INSERTING THE ELECTRODE THROUGH A PRE-FORMED HOLE IN THE UPPER WORKPART TO AN ARC STARTING POSITION BELOW THE UNDISTURBED UPPER SURFACE OF THE UPPER WORKPART CLOSE TO BUT SPACED APART FROM THE LOWER WORKPART, STRIKING THE ARC SUBSTANTIALLY SOLELY TO THE UPPER SURFACE OF THE LOWER WORKPART WITH THE ELECTRODE IN SAID STARTING POSITION, DWELLING THE ARC SUBSTANTIALLY SOLELY UPON THE UPPER SURFACE OF THE LOWER WORKPART FOR A PERIOD WITH THE ELECTRODE SUSTAINING THE ARC WHILE SUBSTANTIALLY IN SAID ARC STARTING POSITION, RETRACTING THE ELECTRODE TO A SECOND ARC SUSTAINING POSITION, AND FEEDING FILLER WIRE TO THE ARC IN SAID SECOND ARC SUSTAINING POSITION TO COMPLETE THE WELD.
Claim 2
Independent Claim
122 words
THE METHOD OF PLUG WELDING WITH AN ARC ELECTRODE COMPRISING THE STEPS OF INSERTING THE ELECTRODE THROUGH A PRE-FORMED HOLE IN THE UPPER WORKPART TO AN ARC STARTING POSITION BELOW THE UNDISTURBED UPPER SURFACE OF THE UPPER WORKPART CLOSE TO BUT SPACED APART FROM THE LOWER WORKPART, STRIKING THE ARC SUBSTANTIALLY SOLELY TO THE UPPER SURFACE OF THE LOWER WORKPART WITH THE ELECTRODE IN SAID STARTING POSITION, DWELLING THE ARC SUBSTANTIALLY SOLELY UPON THE UPPER SURFACE OF THE LOWER WORKPART FOR A PERIOD WITH THE ELECTRODE SUSTAINING THE ARC WHILE SUBSTANTIALLY IN SAID ARC STARTING POSITION, RETRACTING THE ELECTRODE TO A SECOND ARC SUSTAINING POSITION, AND FEEDING FILLER WIRE TO THE ARC IN SAID SECOND ARC SUSTAINING POSITION TO COMPLETE THE WELD.
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |