Patent US3239648A successfully refreshed from Google Patents.
US3239648A
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Apparatus for arc welding
Assignee: ALLOY RODS Inc KAREN LANE & WILSON AVE A CORP OF
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Filing: 1963-10-01
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Granted: 1966-03-08
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Expires: 1983-10-01
Abstract
No abstract record available.
Inventors
- 👤 Simon E Syrigos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:09
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/29; B23K9/291; B23K9/295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN AN APPARATUS FOR WELDING, A CONSUMABLE ELECTRODE, A CONTACT TUBE HAVING AN OPENING TO RECEIVE THE ELECTRODE, MEANS FOR FEEDING THE ELECTRODE THROUGH THE CONTACT TUBE TOWARD A WORKPIECE, MEANS FOR ESTABLISHING AN ARC BETWEEN THE ELECTRODE AND THE WORKPIECE, A METALLIC NOZZLE DISPOSED AROUND THE CONTACT TUBE AND SPACED OUTWARDLY FROM SAID TUBE TO PROVIDE AN ANNULAR PASSAGE THEREBETWEEN, MEANS FOR INTRODUCING A SHIELDING GAS INTO SAID PASSAGE AND DIRECTING SAID GAS TO THE ARC TO SHIELD THE SAME, AND A LAYER OF A HIGH TEMPERATURE REFRACTORY MATERIAL COVERING THE OUTER SURFACE OF THE CONTACT TUBE, SAID LAYER OF REFRACTORY MATE-
Claim 2
Dependent Claim
103 words
IN AN APPARATUS FOR WELDING, A CONSUMABLE ELECTRODE, A CONTACT TUBE HAVING AN OPENING TO RECEIVE THE ELECTRODE, MEANS FOR FEEDING THE ELECTRODE THROUGH THE CONTACT TUBE TOWARD A WORKPIECE, MEANS FOR ESTABLISHING AN ARC BETWEEN THE ELECTRODE AND THE WORKPIECE, A METALLIC NOZZLE DISPOSED AROUND THE CONTACT TUBE AND SPACED OUTWARDLY FROM SAID TUBE TO PROVIDE AN ANNULAR PASSAGE THEREBETWEEN, MEANS FOR INTRODUCING A SHIELDING GAS INTO SAID PASSAGE AND DIRECTING SAID GAS TO THE ARC TO SHIELD THE SAME, AND A LAYER OF A HIGH TEMPERATURE REFRACTORY MATERIAL COVERING THE OUTER SURFACE OF THE CONTACT TUBE, SAID LAYER OF REFRACTORY MATE-
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |