Patent US2800419A successfully refreshed from Google Patents.
US2800419A
Expired / Lapsed
US
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Method and apparatus for hard surfacing metals
Assignee: Coast Metals Inc
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Filing: 1953-11-27
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Granted: 1957-07-23
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Expires: 1973-11-27
Abstract
No abstract record available.
Inventors
- 👤 Harry V Kough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:17
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/16; B05B7/20; B05B7/201; B05B7/205; B05B7/206; C; C23; C23C; C23C4/00; C23C4/12; C23C4/129
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
THE METHOD OF APPLYING HARD-SURFACING MATERIAL BY A TORCH HAVING A TIP FOR SUPPLYING A FLAME JET, WHICH METHOD COMPRISES SUPPLYING A STREAM OF FUEL GAS TO THE TORCH TIP FROM A SUBSTANTIAL DISTQANCE UPSTREAM FROM THE TIP, DROPPING METAL POWDER, HAVING SUBSTANTIALLY ALL PARTICLES OF ROUNDED CONTOUR, BY GRAVITY INTO A SPACE WITHIN THE TORCH AT A SUBSTANTIAL DISTANT UPSTREAM FROM THE TIP, DRAWING THE POWDER FROM SAID SPACE INTO THE FUEL GAS STREAM, PASSING THE ROUNDED PARTICLES OF POWDER, EN TAINED IN THE GAS STREAM, THROUGH A DISPERSION ZONE IN WHICH THE PARTICLES ARE ACCELERATED TO A VELOCITY SUBSTANTIALLY EQUAL TO THE GAS FLOW VELOCITY AS THEY ARE CARRIED BY THE GAS STREAM TO THE TORCH TIP, AND FROM THE TIP THROUGH PRIMARY AND SECONDARY CIOMBUSTION CONES OF THE FLAMED JET SUPPLIED BY TIP, AND PASSING THE FLAME JET ACROSS THE SURFACE OF A WORKPIECE WHILE THE POWDER PARTICLES ARE PROJECTED TOWARD THE WORKPIECE BY THE FLAME JET.
Claim 2
Independent Claim
160 words
THE METHOD OF APPLYING HARD-SURFACING MATERIAL BY A TORCH HAVING A TIP FOR SUPPLYING A FLAME JET, WHICH METHOD COMPRISES SUPPLYING A STREAM OF FUEL GAS TO THE TORCH TIP FROM A SUBSTANTIAL DISTQANCE UPSTREAM FROM THE TIP, DROPPING METAL POWDER, HAVING SUBSTANTIALLY ALL PARTICLES OF ROUNDED CONTOUR, BY GRAVITY INTO A SPACE WITHIN THE TORCH AT A SUBSTANTIAL DISTANT UPSTREAM FROM THE TIP, DRAWING THE POWDER FROM SAID SPACE INTO THE FUEL GAS STREAM, PASSING THE ROUNDED PARTICLES OF POWDER, EN TAINED IN THE GAS STREAM, THROUGH A DISPERSION ZONE IN WHICH THE PARTICLES ARE ACCELERATED TO A VELOCITY SUBSTANTIALLY EQUAL TO THE GAS FLOW VELOCITY AS THEY ARE CARRIED BY THE GAS STREAM TO THE TORCH TIP, AND FROM THE TIP THROUGH PRIMARY AND SECONDARY CIOMBUSTION CONES OF THE FLAMED JET SUPPLIED BY TIP, AND PASSING THE FLAME JET ACROSS THE SURFACE OF A WORKPIECE WHILE THE POWDER PARTICLES ARE PROJECTED TOWARD THE WORKPIECE BY THE FLAME JET.
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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |