US3296686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a finned heat exchanger
Assignee: Olin Corp
•
Filing: 1964-04-16
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Granted: 1967-01-10
•
Expires: 1984-04-16
Abstract
No abstract record available.
Inventors
- 👤 William O Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:10
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T29/49369; Y10T29/49371; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
THE METHOD OF MAKING A FINNED SHEET METAL ARTICLE COMPRISING THE STEPS OF (A) FORMING A PLAITED FIN STOCK LAYER BY PROVIDING A CORRUGATED METAL SHEET, COATING ONE SIDE OF SAID CORRUGATED SHEET WITH WELD PREVENTING MATERIAL, FORMING SAID COATED SHEET INTO A SUBSTANTIALLY FLAT LAYER OF A PLURALITY OF PARTIALLAY OVERLAPPED PLAITS WITH OPPOSITELY FACING END PORTIONS OF IMMEDIATELY ADJACENT PLAITS EXTENDING BEYOND THE ENDS OF ALTERNATE ADJACENT PLAITS RESPECTIVELY, AND REMOVING THE COATING FROM THE EXPOSED END PORTION OF SAID PLAITS OF SAID LAYER, (B) FORMING A BLANK BY DISPOSING SAID LAYER OF PLAITED FIN STOCK INTERMEDIATE A PAIR OF METAL SHEETS WITH THE UNCOATED END PORTIONS OF OPPOSITELY FACING ALTERNATE ADJACENT PLAITS BEING IN CONTACT WITH SAID OTHER SHEETS, (C) FORMING AN INTERGRATED UNITARY STRUCTURE BY PRESSURED WELDING SAID PLAITED FIN STOCK LAYER TO SAID OTHER SHEETS IN THE AREA OF SAID UNCOATED END PORTIONS, AND (D) EFFECTING RELATIVE OUTWARD AND LATERAL MOVEMENT BETWEEN SAID OTHER SHEETS THEREBY RAISING THE UNJOINED ALTERNATE ADJACENT PLAITS OF SAID PLAITED FIN STOCK LAYER TO PROVIDE INTERGRAL ERECT FINS SECURED TO SAID OTHER SHEETS IN THE AREA OF SAID AUNCOATED END PORTIONS.
Claim 2
Independent Claim
191 words
THE METHOD OF MAKING A FINNED SHEET METAL ARTICLE COMPRISING THE STEPS OF (A) FORMING A PLAITED FIN STOCK LAYER BY PROVIDING A CORRUGATED METAL SHEET, COATING ONE SIDE OF SAID CORRUGATED SHEET WITH WELD PREVENTING MATERIAL, FORMING SAID COATED SHEET INTO A SUBSTANTIALLY FLAT LAYER OF A PLURALITY OF PARTIALLAY OVERLAPPED PLAITS WITH OPPOSITELY FACING END PORTIONS OF IMMEDIATELY ADJACENT PLAITS EXTENDING BEYOND THE ENDS OF ALTERNATE ADJACENT PLAITS RESPECTIVELY, AND REMOVING THE COATING FROM THE EXPOSED END PORTION OF SAID PLAITS OF SAID LAYER, (B) FORMING A BLANK BY DISPOSING SAID LAYER OF PLAITED FIN STOCK INTERMEDIATE A PAIR OF METAL SHEETS WITH THE UNCOATED END PORTIONS OF OPPOSITELY FACING ALTERNATE ADJACENT PLAITS BEING IN CONTACT WITH SAID OTHER SHEETS, (C) FORMING AN INTERGRATED UNITARY STRUCTURE BY PRESSURED WELDING SAID PLAITED FIN STOCK LAYER TO SAID OTHER SHEETS IN THE AREA OF SAID UNCOATED END PORTIONS, AND (D) EFFECTING RELATIVE OUTWARD AND LATERAL MOVEMENT BETWEEN SAID OTHER SHEETS THEREBY RAISING THE UNJOINED ALTERNATE ADJACENT PLAITS OF SAID PLAITED FIN STOCK LAYER TO PROVIDE INTERGRAL ERECT FINS SECURED TO SAID OTHER SHEETS IN THE AREA OF SAID AUNCOATED END PORTIONS.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |