US3116408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding apparatus and methods
Assignee: Airco Inc
•
Filing: 1961-01-26
•
Granted: 1963-12-31
•
Expires: 1981-01-26
Abstract
No abstract record available.
Inventors
- 👤 George R Turbett
- 👤 Paul R Blackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:08
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/122; B23K9/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A CONTACT TUBE FOR THE INTRODUCTION OF ARC WELDING CURRENT TO A MOVING WIRE ELECTRODE PASSING THERETHROUGH WHICH COMPRISES A HARD DRAWN COPPER TUBE HAVING A WIRE ENTRANCE END AND A WIRE EXIT END, SAID TUBE BEING STRESS RELIEF ANNEALED ONLY IN A ZONE INTERMEDIATE ITS ENDS WHEREUPON THE END PORTIONS RETAIN SUBSTANTIALLY ALL OF THEIR ORIGINAL HARDNESS, A FIRST BEND IN THE ANNEALED ZONE TO DEFLECT THE AXIS OF THE TUBE IN ONE DIRECTION LESS THAN THE AMOUNT THAT WOULD EXCEED THE ELASTIC LIMIT IF THE AREA BENT WERE NOT ANNEALED, AND A SECOND BEND IN THE ANNEALED ZONE TO DEFLECT THE AXIS OF THE TUBE IN THE OPPOSITE DIRECTION LESS THAN THE AMOUNT THAT WOULD EXCEED THE ELASTIC LIMIT IF THE AREA BENT WERE NOT ANNEALED BUT MORE THAN THE AMOUNT OF THE SAID FIRST BEND TO CAUSE THE UNANNEALED EXIT END PORTION OF THE TUBE TO BE DEFLECTED BACK TOWARD THE ORIGINAL AXIS TO ASSURE A POINT OF CONTACT BETWEEN THE TUBE AND THE WIRE PASSING THERETHROUGH IN THE UNANNEALED ZONE CONSTITUTING THE EXIT END PORTION OF SAID TUBE.
Claim 2
Dependent Claim
182 words
A CONTACT TUBE FOR THE INTRODUCTION OF ARC WELDING CURRENT TO A MOVING WIRE ELECTRODE PASSING THERETHROUGH WHICH COMPRISES A HARD DRAWN COPPER TUBE HAVING A WIRE ENTRANCE END AND A WIRE EXIT END, SAID TUBE BEING STRESS RELIEF ANNEALED ONLY IN A ZONE INTERMEDIATE ITS ENDS WHEREUPON THE END PORTIONS RETAIN SUBSTANTIALLY ALL OF THEIR ORIGINAL HARDNESS, A FIRST BEND IN THE ANNEALED ZONE TO DEFLECT THE AXIS OF THE TUBE IN ONE DIRECTION LESS THAN THE AMOUNT THAT WOULD EXCEED THE ELASTIC LIMIT IF THE AREA BENT WERE NOT ANNEALED, AND A SECOND BEND IN THE ANNEALED ZONE TO DEFLECT THE AXIS OF THE TUBE IN THE OPPOSITE DIRECTION LESS THAN THE AMOUNT THAT WOULD EXCEED THE ELASTIC LIMIT IF THE AREA BENT WERE NOT ANNEALED BUT MORE THAN THE AMOUNT OF THE SAID FIRST BEND TO CAUSE THE UNANNEALED EXIT END PORTION OF THE TUBE TO BE DEFLECTED BACK TOWARD THE ORIGINAL AXIS TO ASSURE A POINT OF CONTACT BETWEEN THE TUBE AND THE WIRE PASSING THERETHROUGH IN THE UNANNEALED ZONE CONSTITUTING THE EXIT END PORTION OF SAID TUBE.
References Cited (Backward Citations)
US1508691A
Cited
US2830363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |