US3177937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spirally-finned heat exchanger
Assignee: MC ACQUISITION Corp
•
Filing: 1962-12-10
•
Granted: 1965-04-13
•
Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Jack M Siough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:20
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/26; F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/34; F28F1/36; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/49382
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A TUBULAR HEAT EXCHANGER OF THE TYPE COMPRISING AN ELONGATED TUBE HAVING A WIDE STRIP OF HEAT CONDUCTING MATERIAL SPIRALLY EDGE-WRAPPED TO THE EXTERIOR THEREOF UNDER TENSION AND PROJECTING RADIALLY THEREFROM THAT IMPROVEMENT WHICH COMPRISES A HEAT CONDUCTIVE SURFACE COVERING FOR THE EXPOSED EXTERIOR PORTION OF SAID TUBE, SAID COVERING COMPRISING A CONTINUOUS THIN METAL RIBBON CROWNED TRANSVERSELY THEREOF AND WRAPPED WITH THE CROWN THEREOF PRESSED AGINST THE TUBE SURFACE AND WITH THE OPPOSITE LATERAL EDGES OF SAID RIBBON IN PRESSURE CONTACT WITH THE JUXTAPOSED SURFACES OF SAID WIDE STRIP OF RADIAL FINNING.
Claim 2
Dependent Claim
94 words
IN A TUBULAR HEAT EXCHANGER OF THE TYPE COMPRISING AN ELONGATED TUBE HAVING A WIDE STRIP OF HEAT CONDUCTING MATERIAL SPIRALLY EDGE-WRAPPED TO THE EXTERIOR THEREOF UNDER TENSION AND PROJECTING RADIALLY THEREFROM THAT IMPROVEMENT WHICH COMPRISES A HEAT CONDUCTIVE SURFACE COVERING FOR THE EXPOSED EXTERIOR PORTION OF SAID TUBE, SAID COVERING COMPRISING A CONTINUOUS THIN METAL RIBBON CROWNED TRANSVERSELY THEREOF AND WRAPPED WITH THE CROWN THEREOF PRESSED AGINST THE TUBE SURFACE AND WITH THE OPPOSITE LATERAL EDGES OF SAID RIBBON IN PRESSURE CONTACT WITH THE JUXTAPOSED SURFACES OF SAID WIDE STRIP OF RADIAL FINNING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |