US2817611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the thermochemical desurfacing of ferrous metal bodies
Assignee: Airco Inc
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Filing: 1954-03-19
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Granted: 1957-12-24
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Expires: 1974-03-19
Abstract
No abstract record available.
Inventors
- 👤 George V Slottman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:40
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A METHOD OF SCARFING THE LONGITUDINAL PERIPHERAL SURFACE OF EACH OF A SUCCESSION OF ELONGATED FERROUS BODIES, ISSUING FROM A FERROUS BODY PROCESSING APPARATUS AT FREQUENT INTERVALS AND TRAVELING AT A HIGH SPEED, WITHOUT STOPPING EACH OF SAID BODIES; SAID METHOD COMPRISING PREHEATING THE LEADING LONGITUDINAL PERIPHERAL SURFACE PORTION ONLY OF EACH OF SAID FERROUS BODIES, SUFFICIENTLY TO PERMIT THE INITIATION OF DESURFACING BY OXYGEN JETS, WHILE EACH OF SAID METAL BODIES CONTINUES MOVING SUBSTANTIALLY AT SAID HIGH SPEED FOR A PREDETERMINED RELATIVELY SHORT DISTANCE; MOVING THE PREHEATING MEANS WITH SAID LEADING SURFACE PORTION; AND THEN DESURFACING EACH OF SAID BODIES WITH OXYGEN JETS WHILE MAINTAINING THE FORWARD SPEED OF EACH OF SAID BODIES AND MOVING EACH OF SAID BODIES PAST SAID OXYGEN JETS.
Claim 2
Independent Claim
124 words
A METHOD OF SCARFING THE LONGITUDINAL PERIPHERAL SURFACE OF EACH OF A SUCCESSION OF ELONGATED FERROUS BODIES, ISSUING FROM A FERROUS BODY PROCESSING APPARATUS AT FREQUENT INTERVALS AND TRAVELING AT A HIGH SPEED, WITHOUT STOPPING EACH OF SAID BODIES; SAID METHOD COMPRISING PREHEATING THE LEADING LONGITUDINAL PERIPHERAL SURFACE PORTION ONLY OF EACH OF SAID FERROUS BODIES, SUFFICIENTLY TO PERMIT THE INITIATION OF DESURFACING BY OXYGEN JETS, WHILE EACH OF SAID METAL BODIES CONTINUES MOVING SUBSTANTIALLY AT SAID HIGH SPEED FOR A PREDETERMINED RELATIVELY SHORT DISTANCE; MOVING THE PREHEATING MEANS WITH SAID LEADING SURFACE PORTION; AND THEN DESURFACING EACH OF SAID BODIES WITH OXYGEN JETS WHILE MAINTAINING THE FORWARD SPEED OF EACH OF SAID BODIES AND MOVING EACH OF SAID BODIES PAST SAID OXYGEN JETS.
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) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |