US3250323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: KARMAZIN PRODUCTS CORP
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Filing: 1962-01-23
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Granted: 1966-05-10
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Expires: 1982-01-23
Abstract
No abstract record available.
Inventors
- 👤 Karmazin John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:02
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/26; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/26; F28F1/28; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/461; Y10S165/462
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A HEAT EXCHANGER INCLUDING A PLURALITY OF SPACED PARALLEL SHEETS OF MATERIAL HAVING SPACED INTEGRAL TAPERED TUBULAR PROJECTIONS, THE TUBULAR PROJECTIONS OF ADJACENT SHEETS BEING DISPOSED IN NESTED RELATION TO FORM CONDUITS, EACH OF SAID TUBULAR PROJECTIONS HAVING A MAIN TUBULAR PORTION OF A FIRST ANGLE OF TAPER AND A TERMINAL TUBULAR PORTION ADJACENT THE FREE END THEREON OF A SECOND GREATER ANGLE OF TAPER, THE TERMINAL PORTION OF EACH OF SAID TUBULAR PROJECTIONS BEING DISPOSED WITHIN THE MAIN PORTION OF THE TUBULAR PROJECTION IN WHICH IT IS NESTED TO FORM AN ANNULAR CAVITY THEREBETWEEN OF TAPERING RADIAL THICKNESS, AND BONDING MATERIAL DISPOSED IN SAID CAVITIES BONDING SAID TERMINAL TUBULAR PORTIONS TO THE MAIN TUBULAR PORTIONS IN WHICH THEY ARE DISPOSED.
Claim 2
Dependent Claim
121 words
A HEAT EXCHANGER INCLUDING A PLURALITY OF SPACED PARALLEL SHEETS OF MATERIAL HAVING SPACED INTEGRAL TAPERED TUBULAR PROJECTIONS, THE TUBULAR PROJECTIONS OF ADJACENT SHEETS BEING DISPOSED IN NESTED RELATION TO FORM CONDUITS, EACH OF SAID TUBULAR PROJECTIONS HAVING A MAIN TUBULAR PORTION OF A FIRST ANGLE OF TAPER AND A TERMINAL TUBULAR PORTION ADJACENT THE FREE END THEREON OF A SECOND GREATER ANGLE OF TAPER, THE TERMINAL PORTION OF EACH OF SAID TUBULAR PROJECTIONS BEING DISPOSED WITHIN THE MAIN PORTION OF THE TUBULAR PROJECTION IN WHICH IT IS NESTED TO FORM AN ANNULAR CAVITY THEREBETWEEN OF TAPERING RADIAL THICKNESS, AND BONDING MATERIAL DISPOSED IN SAID CAVITIES BONDING SAID TERMINAL TUBULAR PORTIONS TO THE MAIN TUBULAR PORTIONS IN WHICH THEY ARE DISPOSED.
References Cited (Backward Citations)
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Cited
US2092421A
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US2133990A
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US2644225A
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US3068905A
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |