Patent US4198627A successfully refreshed from Google Patents.
Patent US3177935A successfully refreshed from Google Patents.
US3177935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling tube structure
Assignee: Individual
•
Filing: 1963-12-17
•
Granted: 1965-04-13
•
Expires: 1983-12-17
Abstract
No abstract record available.
Inventors
- 👤 Irwin E Rosman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:01
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/02; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/64; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A COOLING STRUCTURE COMPRISING A PLURALITY OF TUBULAR MEMBERS JOINED TOGETHER IN A SUSTANTIALLY CYLINDRICAL ARRANGEMENT, EACH OF SAID MEMBERS HAVING A FIRST WALL AND A SECOND WALL, SAID WALLS FORMING SEGEMENTS OF SUBSTANTIALLY CONCENTRIC CYLINDRICAL SURFACE, EACH OF SAID TUBES BEING FORMED FROM A METAL SHEET THAT HAS TWO EDGES WHICH ARE BROUGHT TOGETHER ALONG THE LENGTH OF EACH TUBE TO FORM A PROJECTION FROM ONE SIDE OF EACH TUBE, AT LEAST ONE SURFACE OF THE PROJECTION LYING ALONG ONE OF SAID CONCENTRIC CYLINDRICAL SURFACES, MEANS FOR SEALING EACH OF SAID TUBES ALONG THE PROJECTION THEREFROM, AND INDENTATION IN ANOTHER SIDE OF EACH TUBE, SAID INDENATATION EXTENDING ALONG THE LENGTH OF THE TUBE AND BEING REMOTE FROM THE PROJECTION FROM THE SAME TUBE, AND MEANS FOR SECURING THE PROJECTION FROM EACH TUBE TO THE INDENTATION OF AN ADJACENT TUBE, SAID LAST-NAMED MEANS INCLUDING A BRAZING MATERIAL THAT SUBSTANTIALLY FILLS THE SPACE BETWEEN THE INTERFITTING PROJECTIONS AND INDENTATIONS AT THE SIDES OF SAID TUBES TO FORM A SUBSTANTIALLY SMOOTH WALL SURFACE.
Claim 2
Dependent Claim
171 words
A COOLING STRUCTURE COMPRISING A PLURALITY OF TUBULAR MEMBERS JOINED TOGETHER IN A SUSTANTIALLY CYLINDRICAL ARRANGEMENT, EACH OF SAID MEMBERS HAVING A FIRST WALL AND A SECOND WALL, SAID WALLS FORMING SEGEMENTS OF SUBSTANTIALLY CONCENTRIC CYLINDRICAL SURFACE, EACH OF SAID TUBES BEING FORMED FROM A METAL SHEET THAT HAS TWO EDGES WHICH ARE BROUGHT TOGETHER ALONG THE LENGTH OF EACH TUBE TO FORM A PROJECTION FROM ONE SIDE OF EACH TUBE, AT LEAST ONE SURFACE OF THE PROJECTION LYING ALONG ONE OF SAID CONCENTRIC CYLINDRICAL SURFACES, MEANS FOR SEALING EACH OF SAID TUBES ALONG THE PROJECTION THEREFROM, AND INDENTATION IN ANOTHER SIDE OF EACH TUBE, SAID INDENATATION EXTENDING ALONG THE LENGTH OF THE TUBE AND BEING REMOTE FROM THE PROJECTION FROM THE SAME TUBE, AND MEANS FOR SECURING THE PROJECTION FROM EACH TUBE TO THE INDENTATION OF AN ADJACENT TUBE, SAID LAST-NAMED MEANS INCLUDING A BRAZING MATERIAL THAT SUBSTANTIALLY FILLS THE SPACE BETWEEN THE INTERFITTING PROJECTIONS AND INDENTATIONS AT THE SIDES OF SAID TUBES TO FORM A SUBSTANTIALLY SMOOTH WALL SURFACE.
References Cited (Backward Citations)
US682434A
Cited
US1093766A
Cited
US1608905A
Cited
US2000906A
Cited
US3086358A
Cited
US3004386A
Cited
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 |