Patent US2686860A successfully refreshed from Google Patents.
US2686860A
Expired / Lapsed
US
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Inert gas-shielded arc welding torch
Assignee: Huntington Alloys Corp
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Filing: 1952-11-19
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Granted: 1954-08-17
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Expires: 1972-11-19
Abstract
No abstract record available.
Inventors
- 👤 Mortimer P Buck
- 👤 Crumbley Cecil Franklin
- 👤 Leaberry Ernest Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:04
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/29; B23K9/291
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A SHIELDED ELECTRIC ARC WELDING PROCESS COMPRISING STRIKING AN ARC BETWEEN AN ELECTRODE AND THE WORK TO PROVIDE A WELD ZONE, DIRECTING A LAMINAR ANNULAR STREAM OF HELIUM GAS SURROUNDING THE ELECTRODE AND TO BLANKET THE METAL IN THE WELD ZONE AND DIRECTING A SECONDARY LIMINAR ANNULAR HYDROGEN GAS STREAM ENVELOPING THE HELIUM GAS STREAM, SAID HYDROGEN GAS STERAM CONVERGING WITH SAID HELIUM GAS STREAM AT A ANGLE SUCH THAT NO APPRECIABLE ADMIXTING OF THE HYDROGEN GAS AND THE HELIUM OCCURS IN THE ARC ZONE, WHEREBY PROTECTION AGAINST AIR CONTAMINATION OF THE HELIUM GAS STREAM IS PROVIDED TO SUBSTANTIALLY ELIMINATE OXIDATION OF THE METAL AND RESULTING HIGH POROSITY THEREOF.
Claim 2
Dependent Claim
109 words
A SHIELDED ELECTRIC ARC WELDING PROCESS COMPRISING STRIKING AN ARC BETWEEN AN ELECTRODE AND THE WORK TO PROVIDE A WELD ZONE, DIRECTING A LAMINAR ANNULAR STREAM OF HELIUM GAS SURROUNDING THE ELECTRODE AND TO BLANKET THE METAL IN THE WELD ZONE AND DIRECTING A SECONDARY LIMINAR ANNULAR HYDROGEN GAS STREAM ENVELOPING THE HELIUM GAS STREAM, SAID HYDROGEN GAS STERAM CONVERGING WITH SAID HELIUM GAS STREAM AT A ANGLE SUCH THAT NO APPRECIABLE ADMIXTING OF THE HYDROGEN GAS AND THE HELIUM OCCURS IN THE ARC ZONE, WHEREBY PROTECTION AGAINST AIR CONTAMINATION OF THE HELIUM GAS STREAM IS PROVIDED TO SUBSTANTIALLY ELIMINATE OXIDATION OF THE METAL AND RESULTING HIGH POROSITY THEREOF.
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) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |