US3034211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making clad steel
Assignee: Pittsburgh Steel Co
•
Filing: 1959-12-29
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Granted: 1962-05-15
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Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 Edward J Roehl
- 👤 Emory B Michel
- 👤 Kalla John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:32
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/22; B23K20/227
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
THE METHOD OF MAKING CLAD METAL CONTINUOUSLY, SAID METHOD COMPRISING THE STEPS OF PROVIDING A STRIP OF CARBON STEEL AND A STRIP OF STAINLESS STEEL HAVING A PLATING OF NICKEL THEREON OF A THICKNESS OF FROM ABOUT .0001 INCH TO ABOUT .0002 INCH, MOVING SAID STRIPS IN THE SAME DIRECTION, IN SUPERIMPOSED RELATIONSHIP WITH EACH OTHER, BRINGING THE STRIPS INTO CONTACT WITH EACH OTHER WITH THE NICKEL PLATING AGAINST THE CARBON STEEL STRIP, HEATING THE STRIPS IN A NON-OXIDIZING ATMOSPHERE AND TO A PRESSURE WELDING TEMPERATURE IN THE RANGE OF FROM ABOUT 1650* F. AND TO ABOUT 1850* F., AND THEN ROLLING THE STRIPS UNDER A SUFFICIENT ROLLING PRESSURE TO WELD THE COMPONENT STRIPS TOGETHER THROUGHOUT THEIR LENGTH AND TO REDUCE THE COMBINED THICKNESS OF THE STRIPS BETWEEN ABOUT 30% AND ABOUT 45%.
Claim 2
Independent Claim
133 words
THE METHOD OF MAKING CLAD METAL CONTINUOUSLY, SAID METHOD COMPRISING THE STEPS OF PROVIDING A STRIP OF CARBON STEEL AND A STRIP OF STAINLESS STEEL HAVING A PLATING OF NICKEL THEREON OF A THICKNESS OF FROM ABOUT .0001 INCH TO ABOUT .0002 INCH, MOVING SAID STRIPS IN THE SAME DIRECTION, IN SUPERIMPOSED RELATIONSHIP WITH EACH OTHER, BRINGING THE STRIPS INTO CONTACT WITH EACH OTHER WITH THE NICKEL PLATING AGAINST THE CARBON STEEL STRIP, HEATING THE STRIPS IN A NON-OXIDIZING ATMOSPHERE AND TO A PRESSURE WELDING TEMPERATURE IN THE RANGE OF FROM ABOUT 1650* F. AND TO ABOUT 1850* F., AND THEN ROLLING THE STRIPS UNDER A SUFFICIENT ROLLING PRESSURE TO WELD THE COMPONENT STRIPS TOGETHER THROUGHOUT THEIR LENGTH AND TO REDUCE THE COMBINED THICKNESS OF THE STRIPS BETWEEN ABOUT 30% AND ABOUT 45%.
References Cited (Backward Citations)
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Cited
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US2414511A
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US2539247A
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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) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |