US2592414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing hard-faced metal
Assignee: Airco Inc
•
Filing: 1947-11-08
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Granted: 1952-04-08
•
Expires: 1967-11-08
Abstract
No abstract record available.
Inventors
- 👤 Glenn J Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:30
CPC Classifications
C; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C24/103; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24413
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
THE METHOD OF HARD FACING METAL WHICH COMPRISES COMPLETELY COVERING THE SURFACE OF THE BASE METAL WITH A LAYER OF ELECTRICALLY CONDUCTIVE PARTICLES OF AT LEAST ONE CARBIDE FROM THE GROUP CONSISTING OF THE CARBIDES OF TANTALUM, TITANIUM, TUNGSTEN, COLUMBIUM AND BORON, PASSING AN ELEC-/ TRIC CURRENT BETWEEN A NON-CONSUMING ELECTRODE AND THE CARBIDE PARTICLES AND ESTABLISHING AN ARC BETWEEN THE ELECTRODE AND THE PARTICLES, SHIELDING THE ARC AND THE CARBIDE PARTICLES MELTED THEREBY WITH AN INERT GAS, AND PRODUCING RELATIVE MOVEMENT BETWEEN THE GAS-SHIELDED ARC AND THE CARBIDE-COVERED BASE METAL TO TRAVERSE THE ARC OVER THE CARBIDE PARTICLES AND THEREBY PROGRESSIVELY FUSE THEM INTO A SMOOTH UNIFORM CARBIDE LAYER BONDED TO THE BASE METAL WITHOUT SUBSTANTIAL OXIDATION OF THE CARBIDE OR SUBSTANTIAL CONTAMINATION OF IT BY THE BASE METAL.
Claim 2
Independent Claim
130 words
THE METHOD OF HARD FACING METAL WHICH COMPRISES COMPLETELY COVERING THE SURFACE OF THE BASE METAL WITH A LAYER OF ELECTRICALLY CONDUCTIVE PARTICLES OF AT LEAST ONE CARBIDE FROM THE GROUP CONSISTING OF THE CARBIDES OF TANTALUM, TITANIUM, TUNGSTEN, COLUMBIUM AND BORON, PASSING AN ELEC-/ TRIC CURRENT BETWEEN A NON-CONSUMING ELECTRODE AND THE CARBIDE PARTICLES AND ESTABLISHING AN ARC BETWEEN THE ELECTRODE AND THE PARTICLES, SHIELDING THE ARC AND THE CARBIDE PARTICLES MELTED THEREBY WITH AN INERT GAS, AND PRODUCING RELATIVE MOVEMENT BETWEEN THE GAS-SHIELDED ARC AND THE CARBIDE-COVERED BASE METAL TO TRAVERSE THE ARC OVER THE CARBIDE PARTICLES AND THEREBY PROGRESSIVELY FUSE THEM INTO A SMOOTH UNIFORM CARBIDE LAYER BONDED TO THE BASE METAL WITHOUT SUBSTANTIAL OXIDATION OF THE CARBIDE OR SUBSTANTIAL CONTAMINATION OF IT BY THE BASE METAL.
References Cited (Backward Citations)
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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) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |