US2880109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating the interior of cylinders
Assignee: United States Steel Corp
•
Filing: 1955-09-22
•
Granted: 1959-03-31
•
Expires: 1975-09-22
Abstract
No abstract record available.
Inventors
- 👤 Farmer L Current
- 👤 Gerald E Mohnkern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:30
CPC Classifications
C; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C24/103; C23C24/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A METHOD OF LINING THE INSIDE OF A HOLLOW STEEL CYLINDER WITH A HARDER NICKEL BASE ALLOY, WHICH HAS A LOWER MELTING POINT AND WHOSE PROPERTIES ARE CHANGED ADVERSELY IF THE ALLOY IS CONTAMINATED WITH IRON, COMPRISING CHARGING DRY FINELY DIVIDED ALLOY PARTICLES TO THE CYLINDER, CAPPING THE CYLINDER ENDS , ROTATING THE CYLINDER SLOWLY TO DISTRIBUTE THE ALLOY PARTICLES LONGITUDINALLY, THEREAFTER ROTATING THE CYLINDER MORE RAPIDLY TO HOLD THE ALLOY PARTICLES AGAINST THE INSIDE SURFACE THROUGHOUT THE CIRCUMFERENCE BY CENTRIFUGAL FORCE WHILE THESE PARTICLES REMAIN IN FINELY DIVIDED SOLID FORM, MAINTAINING A NONOXIDZING ATMOSPHERE WITHIN THE CYLINDER TO PREVENT OXIDATION OF THE ALLOY PARTICLES, AND INDUCTIVELY HEATING THE CYLINDER A SHORT ANNULAR SECTION AT A TIME BELOW THE TEMPERATURE FOR COMPLETE LIQUIFICATION OF THE ALLOY WHILE STILL ROTATING THE CYLINDER TO FIX THE ALLOY IN PLACE BUT MAINTAIN IT FREE OF CONTAMINATION WITH STEEL OF THE CYLINDER AND WITHOUT DISTORTION OF THE CYLINDER.
Claim 2
Independent Claim
154 words
A METHOD OF LINING THE INSIDE OF A HOLLOW STEEL CYLINDER WITH A HARDER NICKEL BASE ALLOY, WHICH HAS A LOWER MELTING POINT AND WHOSE PROPERTIES ARE CHANGED ADVERSELY IF THE ALLOY IS CONTAMINATED WITH IRON, COMPRISING CHARGING DRY FINELY DIVIDED ALLOY PARTICLES TO THE CYLINDER, CAPPING THE CYLINDER ENDS , ROTATING THE CYLINDER SLOWLY TO DISTRIBUTE THE ALLOY PARTICLES LONGITUDINALLY, THEREAFTER ROTATING THE CYLINDER MORE RAPIDLY TO HOLD THE ALLOY PARTICLES AGAINST THE INSIDE SURFACE THROUGHOUT THE CIRCUMFERENCE BY CENTRIFUGAL FORCE WHILE THESE PARTICLES REMAIN IN FINELY DIVIDED SOLID FORM, MAINTAINING A NONOXIDZING ATMOSPHERE WITHIN THE CYLINDER TO PREVENT OXIDATION OF THE ALLOY PARTICLES, AND INDUCTIVELY HEATING THE CYLINDER A SHORT ANNULAR SECTION AT A TIME BELOW THE TEMPERATURE FOR COMPLETE LIQUIFICATION OF THE ALLOY WHILE STILL ROTATING THE CYLINDER TO FIX THE ALLOY IN PLACE BUT MAINTAIN IT FREE OF CONTAMINATION WITH STEEL OF THE CYLINDER AND WITHOUT DISTORTION OF THE CYLINDER.
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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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |