US2833672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for continuously applying a protective film of lacquer to steelstrip
Assignee: United States Steel Corp
•
Filing: 1955-05-17
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Granted: 1958-05-06
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Expires: 1975-05-17
Abstract
No abstract record available.
Inventors
- 👤 Aner N Laubscher
- 👤 George H Rendel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:51
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A METHOD OF COATING FERROUS-METAL STRIP, THE STEPS COMPRISING DRAWING THE STRIP ALONG A PREDETRMINED PATH AT A SPEED OF SEVERAL HUNDRD F.P.M., APPLYING A CONTINUOUS FILM OF LIQUID CONTAINING A VOLATILE SOLVENT TO AT LEAST ONE SURFACE THREOF, AT ONE POINT IN SAID PATH, PROGRESSIVELY HEATING THE STRIP IMMEDIATELY THEREAFTER TO A TEMPERATURE BETWEEN 500 AND 800*F. SUBSTANTIALLY INSTANTANEOUSLY AND BEFORE SUBSTANTIAL EVAPORATION OF THE SOLVENT FROM THE FILM, BY ELECTRO-MAGNETIC INDUCTION, THEREBY FLASHING THE SOLVENT INTO VAPOR, AND IMMEDIATELY THEREAFTER BRINGING THE HEATED STRIP INTO CONTACT WITH COOLING FLUID IN A REGION CLOSELY ADJACENT SAID POINT OF HEATING, THEREBY COOLING THE STRIPS AT A RATE AT LEAST EQUAL TO THAT AT WHICH IT WAS HEATED.
Claim 2
Dependent Claim
118 words
IN A METHOD OF COATING FERROUS-METAL STRIP, THE STEPS COMPRISING DRAWING THE STRIP ALONG A PREDETRMINED PATH AT A SPEED OF SEVERAL HUNDRD F.P.M., APPLYING A CONTINUOUS FILM OF LIQUID CONTAINING A VOLATILE SOLVENT TO AT LEAST ONE SURFACE THREOF, AT ONE POINT IN SAID PATH, PROGRESSIVELY HEATING THE STRIP IMMEDIATELY THEREAFTER TO A TEMPERATURE BETWEEN 500 AND 800*F. SUBSTANTIALLY INSTANTANEOUSLY AND BEFORE SUBSTANTIAL EVAPORATION OF THE SOLVENT FROM THE FILM, BY ELECTRO-MAGNETIC INDUCTION, THEREBY FLASHING THE SOLVENT INTO VAPOR, AND IMMEDIATELY THEREAFTER BRINGING THE HEATED STRIP INTO CONTACT WITH COOLING FLUID IN A REGION CLOSELY ADJACENT SAID POINT OF HEATING, THEREBY COOLING THE STRIPS AT A RATE AT LEAST EQUAL TO THAT AT WHICH IT WAS HEATED.
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |