US2998322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of hard facing metal
Assignee: Individual
•
Filing: 1957-12-31
•
Granted: 1961-08-29
•
Expires: 1977-12-31
Abstract
No abstract record available.
Inventors
- 👤 Frank R Strate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:18
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/02; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; C23C4/04; C23C4/06; C23C4/12; C23C4/129
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
THE METHOD OF HARD FACING A WORKPIECE METAL BODY WHICH COMPRISES PROVIDING HARD FACING MATERIAL IN POWDERED FORM, SAID MATERIAL COMPRISTING MATRIX METAL AND HARD CARBIDE, SAID POWDERED MATERIAL CONTAINING A UNIFORM DISPERSAL OF THE MATRIX METAL AND CARBIDE, AND ISSUING A STREAM OF SAID POWDERED MATERIAL ONTO THE SURFACE OF SAID BODY TO BE HARDFACED IN THE PRESENCE OF A FLAME SURROUNDING SAID STREAM, SAID FLAME BEING SUFFICIENTLY HOT TO SWEAT THE METAL OF THE WORKPIECE AND PARTIALLY TO MELT SAID MATRIX METAL BUT NOT SAID CARBIDE, SAID BODY BEING MOVED RELATIVE TO SAID STREAM AND THE SURROUNDING FLAME WHEREBY SAID STREAM AND FLAME ADVANCE ALONG SAID SURFACE WITH SAID FLAME PREHEATING SAID SURFACE IN ADVANCE OF SAID STREAM AND FUSING THE DEPOSITED HARD FACING MATERIAL BEHIND THE ADVANCING STREAM AND THEN PERMITTING THE WORKPIECE AND DEPOSITED METAL TO COOL AND FORM A HETEROGENEOUS DEPOSIT ON SAID WORKPIECE CONSISTING OF THE CARBIDE PARTICLES HELD IN UNIFORM DISTRIBUTION IN THE MATRIX METAL.
Claim 2
Independent Claim
162 words
THE METHOD OF HARD FACING A WORKPIECE METAL BODY WHICH COMPRISES PROVIDING HARD FACING MATERIAL IN POWDERED FORM, SAID MATERIAL COMPRISTING MATRIX METAL AND HARD CARBIDE, SAID POWDERED MATERIAL CONTAINING A UNIFORM DISPERSAL OF THE MATRIX METAL AND CARBIDE, AND ISSUING A STREAM OF SAID POWDERED MATERIAL ONTO THE SURFACE OF SAID BODY TO BE HARDFACED IN THE PRESENCE OF A FLAME SURROUNDING SAID STREAM, SAID FLAME BEING SUFFICIENTLY HOT TO SWEAT THE METAL OF THE WORKPIECE AND PARTIALLY TO MELT SAID MATRIX METAL BUT NOT SAID CARBIDE, SAID BODY BEING MOVED RELATIVE TO SAID STREAM AND THE SURROUNDING FLAME WHEREBY SAID STREAM AND FLAME ADVANCE ALONG SAID SURFACE WITH SAID FLAME PREHEATING SAID SURFACE IN ADVANCE OF SAID STREAM AND FUSING THE DEPOSITED HARD FACING MATERIAL BEHIND THE ADVANCING STREAM AND THEN PERMITTING THE WORKPIECE AND DEPOSITED METAL TO COOL AND FORM A HETEROGENEOUS DEPOSIT ON SAID WORKPIECE CONSISTING OF THE CARBIDE PARTICLES HELD IN UNIFORM DISTRIBUTION IN THE MATRIX METAL.
References Cited (Backward Citations)
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Cited
US1977128A
Cited
US2049575A
Cited
US2261228A
Cited
US2674542A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |