Patent US3272910A successfully refreshed from Google Patents.
US3272910A
Expired / Lapsed
US
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Buoyancy system for underwater conductor cable
Assignee: North American Aviation Corp
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Filing: 1964-09-21
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Granted: 1966-09-13
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Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 Edward F Flint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:17
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/12; Y; Y10; Y10S; Y10S264/00; Y10S264/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
AN UNDERWATER BUOYANCY CABLE FOR ELECTRIC CONDUCTORS COMPRISING A FIRST FLEXIBLE TUBULAR MEMBER HAVING A PLURALITY OF ELECTRICAL CONDUCTORS LONGITUDINALLY DISPOSED THEREIN, A RELATIVELY LARGE SECOND FLEXIBLE TUBULAR MEMBER, SAID FIRST TUBULAR MEMBER LONGITUDINALLY DISPOSED WITHIN SAID SECOND TUBULAR MEMBER TO FORM A LONGITUDINAL CHAMBER BETWEEN THE OUTER SURFACE OF SAID FIRST TUBULAR MEMBER AND THE INNER SURFACE OF SAID SECOND TUBULAR MEMBER, A THIRD RELATIVELY SMALL FLEXIBLE TUBE EXTENDING LONGITUDINALLY OF SAID LONGITUDINAL CHAMBER, AND A PLURALITY OF CELLULAR BUOYANCY MEMBERS LONGITUDINALLY DISPOSED WITHIN SAID TUBULAR MEMBER.
Claim 2
Dependent Claim
88 words
AN UNDERWATER BUOYANCY CABLE FOR ELECTRIC CONDUCTORS COMPRISING A FIRST FLEXIBLE TUBULAR MEMBER HAVING A PLURALITY OF ELECTRICAL CONDUCTORS LONGITUDINALLY DISPOSED THEREIN, A RELATIVELY LARGE SECOND FLEXIBLE TUBULAR MEMBER, SAID FIRST TUBULAR MEMBER LONGITUDINALLY DISPOSED WITHIN SAID SECOND TUBULAR MEMBER TO FORM A LONGITUDINAL CHAMBER BETWEEN THE OUTER SURFACE OF SAID FIRST TUBULAR MEMBER AND THE INNER SURFACE OF SAID SECOND TUBULAR MEMBER, A THIRD RELATIVELY SMALL FLEXIBLE TUBE EXTENDING LONGITUDINALLY OF SAID LONGITUDINAL CHAMBER, AND A PLURALITY OF CELLULAR BUOYANCY MEMBERS LONGITUDINALLY DISPOSED WITHIN SAID TUBULAR MEMBER.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |