US3270780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite heat exchanger tube structure
Assignee: General Electric Co
•
Filing: 1963-04-26
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Granted: 1966-09-06
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Expires: 1983-04-26
Abstract
No abstract record available.
Inventors
- 👤 Paul H Kydd
- 👤 George J Mullaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:27
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/14; F16L59/00; F16L59/14; F16L59/16; F28; F28F; F28F21/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
A COMPOSITE TUBE CONSTRUCTION COMPRISING: (A) LONGITUDINALLY-EXTENDING IMPERMEABLE METALLIC MEANS FOR CONTAINING A FLUID CONFINED THEREIN FOR TRANSPORTATION UNDER PRESSURE THERETHROUGH, (1) SAID CONTAINING MEANS BEING IN THE SHAPE OF A RIGHT CIRCULAR CYLINDER AND HAVING SUFFICIENT WALL THICKNESS AND STRENGTH TO WITHSTAND THE INTERNAL FLUID PRESSURE WITHOUT ADDITIONAL EXTERNAL SUPPORT AT TEMPERATURES BELOW AND APPROACHING THE OPERATING TEMPERATURES FOR SAID COMPOSITE TUBE, (B) CERAMIC MEANS FOR SIMULTANEOUSLY PROTECTING SAID CONTAINING MEANS AND SUPPORTING THE INTERNAL FLUID PRESSURE TRANSMITTED THERETO BY SAID CONTAINING MEANS AT OPERATING TEMPERATURES AFTER THE EXPANSION OF THE CONTAINING MEANS THEREAGAINST DURING TEMPERATURE INCREASE THEREOF TO THE OPERATING TEMPERATURES,
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |