Patent US3216095A successfully refreshed from Google Patents.
US3216095A
Expired / Lapsed
US
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Method of securing fins to tubes
Assignee: Alstom Power Inc
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Filing: 1962-02-16
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Granted: 1965-11-09
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Expires: 1982-02-16
Abstract
No abstract record available.
Inventors
- 👤 Orville C Kurtz
- 👤 Harold C Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:55
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/24; F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/30; F28F2215/00; F28F2215/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/49393; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
THE METHOD OF SECURING AN EXTENDED SURFACE FIN TO THE OUTER SURFACE OF A TUBULAR MEMBER THAT COMPRISES THE STEPS OF FORMING AN OPENING IN SAID FIN SLIGHTLY LARGER THAN THE OUTER DIMENSIONS OF SAID TUBULAR MEMBER, FORMING A RADIAL SLOT IN SAID FIN EXZTENDING FROM SAID OPENING TO OUTER PERIPHERY, INSERTING SAID TUBULAR MEMBER INTO THE OPENING IN SAID EXTENDED SURFACE, EXERTING A FORCE ON SAID FIN TENDING TO CLOSE THE SLOT AND SIMULTANEOUSLY FILLING EACH SLOT WITH A MOLTEN METALLIC MATERIAL THAT BONDS ITSELF TO THE SPACE EDGES OF SAID SLOT AND UPON COOLING SOLIDIFIES AND CONTRACTS TO DRAW THE EDGES OF SAID SLOT INTO A MUTUALLY CLOSER RELATIONSHIP WHEREBY THE OPENING IN SAID TIN TIGHTLY EMBRACES THE OUTER SURFACE OF THE TUBULAR MEMBER.
Claim 2
Independent Claim
126 words
THE METHOD OF SECURING AN EXTENDED SURFACE FIN TO THE OUTER SURFACE OF A TUBULAR MEMBER THAT COMPRISES THE STEPS OF FORMING AN OPENING IN SAID FIN SLIGHTLY LARGER THAN THE OUTER DIMENSIONS OF SAID TUBULAR MEMBER, FORMING A RADIAL SLOT IN SAID FIN EXZTENDING FROM SAID OPENING TO OUTER PERIPHERY, INSERTING SAID TUBULAR MEMBER INTO THE OPENING IN SAID EXTENDED SURFACE, EXERTING A FORCE ON SAID FIN TENDING TO CLOSE THE SLOT AND SIMULTANEOUSLY FILLING EACH SLOT WITH A MOLTEN METALLIC MATERIAL THAT BONDS ITSELF TO THE SPACE EDGES OF SAID SLOT AND UPON COOLING SOLIDIFIES AND CONTRACTS TO DRAW THE EDGES OF SAID SLOT INTO A MUTUALLY CLOSER RELATIONSHIP WHEREBY THE OPENING IN SAID TIN TIGHTLY EMBRACES THE OUTER SURFACE OF THE TUBULAR MEMBER.
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |