US3121940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finned hollow article
Assignee: Olin Corp
•
Filing: 1959-06-15
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Granted: 1964-02-25
•
Expires: 1979-06-15
Abstract
No abstract record available.
Inventors
- 👤 Cospen Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:16
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/12; F28F3/14; F25; F25B; F25B2339/00; F25B2339/04; F25B2339/043; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T29/49369
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A METHOD OF MAKING A FINNED HOLLOW PANEL COMPRISING INTERPOSING BETWEEN SUPERPOSED SHEETS OF METAL A FIRST PATTERN OF WELD-INHIBITING MATERIAL AND AT LEAST ONE SEPARATE SEECOND PATTERN OF WELD-INHIBITING MATERIAL, SAID FIRST PATTERN CORRESPONDING TO A PREDETERMINED CONFIGURATION OF FLUID PASSAGES AND SAID SECOND PATTERN DEFINING A FIN PATTERN WITH SAID SECOND PATTERN SPACED FROM THE PERIPHERAL EDGES OF SAID SHEETS, PRESSURE WELDING SAID SUPERPOSED SHEETS IN THE AREAS NOT SEPARATED BY SAID WELDINHIBITING MATERIAL, AND CUTTING AT LEAST ONE FIRST SLIT THROUGH THE COMPLEMENTARY PORTIONS OF SAID PANEL ADJACENT SAID SECOND PATTERN, CUTTING AT LEAST TWO SPACED SECOND SLITS AT SPACED POINTS ON SAID FIRST SLIT AND SPACED APART A DISTANCE TO PROVIDE SUBSTANTIAL FIN SURFACE, EACH OF SAID SECOND SLITS TRAVERSING SAID SECOND PATTERN LATERALLY RELATIVE TO SAID FIRST SLIT, AND SEPARATING BETWEEN ADJACENT SECOND SLITS SAID COMPLEMENTARY PORTIONS TO EXTEND IN OPPOSITE DIRECTIONS OUT OF THE PLANE OF SAID PANEL WHEREBY SAID SEPARATING FORMS AN OPENING THROUGH SAID PANEL.
Claim 2
Independent Claim
163 words
A METHOD OF MAKING A FINNED HOLLOW PANEL COMPRISING INTERPOSING BETWEEN SUPERPOSED SHEETS OF METAL A FIRST PATTERN OF WELD-INHIBITING MATERIAL AND AT LEAST ONE SEPARATE SEECOND PATTERN OF WELD-INHIBITING MATERIAL, SAID FIRST PATTERN CORRESPONDING TO A PREDETERMINED CONFIGURATION OF FLUID PASSAGES AND SAID SECOND PATTERN DEFINING A FIN PATTERN WITH SAID SECOND PATTERN SPACED FROM THE PERIPHERAL EDGES OF SAID SHEETS, PRESSURE WELDING SAID SUPERPOSED SHEETS IN THE AREAS NOT SEPARATED BY SAID WELDINHIBITING MATERIAL, AND CUTTING AT LEAST ONE FIRST SLIT THROUGH THE COMPLEMENTARY PORTIONS OF SAID PANEL ADJACENT SAID SECOND PATTERN, CUTTING AT LEAST TWO SPACED SECOND SLITS AT SPACED POINTS ON SAID FIRST SLIT AND SPACED APART A DISTANCE TO PROVIDE SUBSTANTIAL FIN SURFACE, EACH OF SAID SECOND SLITS TRAVERSING SAID SECOND PATTERN LATERALLY RELATIVE TO SAID FIRST SLIT, AND SEPARATING BETWEEN ADJACENT SECOND SLITS SAID COMPLEMENTARY PORTIONS TO EXTEND IN OPPOSITE DIRECTIONS OUT OF THE PLANE OF SAID PANEL WHEREBY SAID SEPARATING FORMS AN OPENING THROUGH SAID PANEL.
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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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |