US3209119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for welding
Assignee: ALLOY RODS Inc KAREN LANE & WILSON AVE A CORP OF
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Filing: 1963-04-18
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Granted: 1965-09-28
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Expires: 1983-04-18
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Keidel
- 👤 Keller Solomon
- 👤 Metropulos George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:52
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/18; B23K9/186
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
AN APPARATUS FOR WELDING THE INTERNAL SURFACE OF SMALL DIAMETER TUBES, COMPRISING MEANS FOR MOUNTING THE TUBE AT AN ANGLE TO THE HORIZONTAL, MEANS FOR ROTATING THE TUBE ABOUT THE AXIS THEREOF, A WELDING HEAD INCLUDING AN ELONGATED MANDREL ADAPTED TO BE INSERTED WITHIN THE TUBE, MEANS FOR MOVING THE MANDREL AND THE TUBE AXIALLY WITH RESPECT TO EACH OTHER, SAID MANDREL HAVING A LONGITUDINAL ELECTRODE PASSAGE TERMINATING AT THE FORWARD END OF SAID MANDREL, MEANS FOR FEEDING A CONSUMABLE ELECTRODE THROUGH SAID ELECTRODE PASSAGE, MEANS FOR ESTABLISHING AN ARC BETWEEN THE FORWARD TIP OF THE ELECTRODE AND THE TUBE TO THEREBY MELT THE ELECTRODE AND
Claim 2
Independent Claim
106 words
AN APPARATUS FOR WELDING THE INTERNAL SURFACE OF SMALL DIAMETER TUBES, COMPRISING MEANS FOR MOUNTING THE TUBE AT AN ANGLE TO THE HORIZONTAL, MEANS FOR ROTATING THE TUBE ABOUT THE AXIS THEREOF, A WELDING HEAD INCLUDING AN ELONGATED MANDREL ADAPTED TO BE INSERTED WITHIN THE TUBE, MEANS FOR MOVING THE MANDREL AND THE TUBE AXIALLY WITH RESPECT TO EACH OTHER, SAID MANDREL HAVING A LONGITUDINAL ELECTRODE PASSAGE TERMINATING AT THE FORWARD END OF SAID MANDREL, MEANS FOR FEEDING A CONSUMABLE ELECTRODE THROUGH SAID ELECTRODE PASSAGE, MEANS FOR ESTABLISHING AN ARC BETWEEN THE FORWARD TIP OF THE ELECTRODE AND THE TUBE TO THEREBY MELT THE ELECTRODE AND
References Cited (Backward Citations)
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US2269538A
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US2427350A
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US2434481A
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US2912562A
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Cited
US3028469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |