US3228103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal cladding
Assignee: Babcock and Wilcox Co
•
Filing: 1961-05-08
•
Granted: 1966-01-11
•
Expires: 1981-05-08
Abstract
No abstract record available.
Inventors
- 👤 Daniel C Shewmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:58
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
THE METHOD OF FORMING A COMPOSITE METAL ELEMENT FROM METALS HAVING DISIMILAR PHYSICAL CHARACTERISTICS WHICH COMPRISES THE STEPS OF POSITIONING CLEANED FLAT SURFACES OF SAID DISSIMILAR METAL ELEMENTS IN FACE-TO-FACE RELATIONSHIP, SEAL WELDING ONE END AND THE SIDES OF THE PERIPHERY OF SAID ELEMENTS, COLD WORKING THE ELEMENTS FROM SAID SEAL WELDED END TO THE EVACUATE THE AIR FROM BETWEEN SAID FACES AND TO CAUSE DEFORMATION OF SAID METAL ELEMENTS AND A MECHANICAL INTERLOCKING OF THE METAL CRYSTALS, SEAL WELDING THE OPEN END OF SAID ELEMENT WHILE SAID OPEN END PORTIONS ARE HELD IN A COMPRESSED CONDITION, AND HEATING SAID COMPOSITE ELEMENT TO A FORGING TEMPERATURE TO EFFECT A WELDING JUNCTURE BETWEEN SAID DISSIMILAR METALS THROUGHOUT THE SURFACE OF CONTACT THEREBETWEEN.
Claim 2
Independent Claim
121 words
THE METHOD OF FORMING A COMPOSITE METAL ELEMENT FROM METALS HAVING DISIMILAR PHYSICAL CHARACTERISTICS WHICH COMPRISES THE STEPS OF POSITIONING CLEANED FLAT SURFACES OF SAID DISSIMILAR METAL ELEMENTS IN FACE-TO-FACE RELATIONSHIP, SEAL WELDING ONE END AND THE SIDES OF THE PERIPHERY OF SAID ELEMENTS, COLD WORKING THE ELEMENTS FROM SAID SEAL WELDED END TO THE EVACUATE THE AIR FROM BETWEEN SAID FACES AND TO CAUSE DEFORMATION OF SAID METAL ELEMENTS AND A MECHANICAL INTERLOCKING OF THE METAL CRYSTALS, SEAL WELDING THE OPEN END OF SAID ELEMENT WHILE SAID OPEN END PORTIONS ARE HELD IN A COMPRESSED CONDITION, AND HEATING SAID COMPOSITE ELEMENT TO A FORGING TEMPERATURE TO EFFECT A WELDING JUNCTURE BETWEEN SAID DISSIMILAR METALS THROUGHOUT THE SURFACE OF CONTACT THEREBETWEEN.
References Cited (Backward Citations)
US2558093A
Cited
US2718690A
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US2744314A
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US2879587A
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US2782497A
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US2961761A
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US3150455A
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |