Patent US3329487A successfully refreshed from Google Patents.
US3329487A
Expired / Lapsed
US
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Sintered three-phase welding alloy of fe3w3c, wc, and fe
Assignee: Firth Sterling Inc
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Filing: 1965-02-15
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Granted: 1967-07-04
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Expires: 1985-02-15
Abstract
No abstract record available.
Inventors
- 👤 John J Sowko
- 👤 Phillip G Barrho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:07
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12139
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A SINTERED CARBIDE HARD WELDING ALLOY METAL SHAPE CONTAINING AS ITS INGREDIENTS ABOUT 45 TO 55% BY WEIGHT OF WC AND ABOUT 20 TO 30% EACH BY WEIGHT OF W AND FE, AND WHOSE STRUCTURE IS IN THE FORM OF A MAJOR PROPORTION OF FE3W3C SOLUTION BY WEIGHT AND AN INTERMEDIATE PROPORTION OF WC BY WEIGHT DISPERSED THROUGHOUT A BINDER OF A MINOR PROPORTION BY WEIGHT OF FE.
Claim 2
Dependent Claim
91 words
A SINTERED CARBIDE HARD METAL WELDING ALLOY SHAPE FOR APPLICATION IN A MELTED CONDITION TO A FERROUS METAL SURFACE MEMBER TO, ON SOLIDFICATION, PROVIDE A MOLECULARLY-ADHERENT ABRASION-RESISTANT FACING THEREON WHICH CONSISTS OF A MIXTURE OF ABOUT 45 TO 50% BY WEIGHT OF TUNGSTEN CARBIDE POWDER, AND ABOUT 20 TO 30% BY WEIGHT EACH OF TUNGSTEN AND IRON POWDERS PRESSED AND SINTERED, AND CHARACTERIZED WHEN APPLIED TO THE FERROUS METAL SURFACE, BY ITS HIGH MOLECULAR AND RESILLIENT BOND WITH THE SURFACE MEMBER AND BY ITS MAXIMUM HARDNESS WITH A GOOD CROSS-BREAKING STRENGTH.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |