US3131725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High tensile multi-layer cylinder
Assignee: Chicago Bridge and Iron Co
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Filing: 1960-07-26
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Granted: 1964-05-05
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Expires: 1980-07-26
Abstract
No abstract record available.
Inventors
- 👤 John J Chyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:25
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/02; F16L9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A CYLINDER FOR INCORPORATION IN PRESSURE VESSELS, ROCKETS AND THE LIKE FOR RETAINING HIGH INTERNAL FLUID PRESSURES, COMPRISING A TUBULAR METALLIC CYLINDRICAL CORE OF SUBSTANTIAL THICKNESS AND RIGIDITY REINFORCED BY A COIL WRAPPING OF A PLURALITY OF LAYERS OF FLEXIBLE METALLIC SHEET MATERIAL HAVING A THICKNESS LESS THAN ABOUT .04 OF AN INCH AND A TENSILE STRENGTH EXCEEDING 100,000 POUNDS PER SQUARE INCH, SAID COIL WRAPPING HAVING ITS ADJACENT LAYERS IN TIGHT FRICTIONAL METAL TO METAL CONTACT THROUGHOUT AND
Claim 2
Dependent Claim
79 words
A CYLINDER FOR INCORPORATION IN PRESSURE VESSELS, ROCKETS AND THE LIKE FOR RETAINING HIGH INTERNAL FLUID PRESSURES, COMPRISING A TUBULAR METALLIC CYLINDRICAL CORE OF SUBSTANTIAL THICKNESS AND RIGIDITY REINFORCED BY A COIL WRAPPING OF A PLURALITY OF LAYERS OF FLEXIBLE METALLIC SHEET MATERIAL HAVING A THICKNESS LESS THAN ABOUT .04 OF AN INCH AND A TENSILE STRENGTH EXCEEDING 100,000 POUNDS PER SQUARE INCH, SAID COIL WRAPPING HAVING ITS ADJACENT LAYERS IN TIGHT FRICTIONAL METAL TO METAL CONTACT THROUGHOUT AND
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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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |