US2803559A
Expired / Lapsed
US
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Method and apparatus for applying powdered hard surfacing alloy with induction heating
Assignee: Coast Metals Inc
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Filing: 1954-03-25
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Granted: 1957-08-20
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Expires: 1974-03-25
Abstract
No abstract record available.
Inventors
- 👤 Rutherfurd Winthrop
- 👤 Howard L Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:35
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/101; C; C23; C23C; C23C24/00; C23C24/08; C23C24/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
139 words
THE METHOD OF COATING AN AREA OF A METAL WORK PIECE WITH HARD SURFACING MATERIAL, WHICH METHOD COMPRISES LOCATING THE WORK PIECE WITH THE AREA TO BE COATED FACING UPWARDLY DISPENSING POWDERED METALLIC HARD SURFACING MATERIAL IN AN AMOUNT SUFFICIENT TO FORM A COATING OF A PREDETERMINED THICKNESS, THE POWDER BEING DISPENSED ABOVE THE AREA OF SAID WORK PIECE WHICH IS TO BE COATED AND WITH THE MATERIAL SUBSTANTIALLY UNIFORMLY DISTRIBUTED THROUGHOUT A REGION EXTENDING ALONG THE FULL LENGTH OF SAID AREA, ALLOWING THE DISPENED POWDER TO FALL BY GRAVITY AND TO CONTACT THE AREA OF THE WORK PIECE WHICH IS TO BE COATED, AND FUSING THE POWDER ON THE WORK PIECE AND WELDING THE FUSED MATERIAL TO THE WORK PIECE BY INDUCTION HEATING OF BOTH THE POWDER AND THE WORK PIECE WITH A HIGH FREAUENCY ELECTRO MAGNETIC FIELD.
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |