US3605668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater riser and ship connection
Assignee: Boeing North American Inc
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Filing: 1969-07-02
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Granted: 1971-09-20
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Expires: 1989-07-02
Abstract
Abstract A CONNECTION BETWEEN A RELATIVELY RIGID UNDERWATER RISER AND THE DECK OF A SHIP IS DESCRIBED. A TILTABLE TOWER ON THE SHIP ACCOMMODATES SHIP MOTION WHILE MAINTAINING A TENSION IN THE RISER. A BUOYANT BODY BELOW THE SHIP ALSO APPLIES TENSION TO THE RISER. ARTICULATED PIPING HAVING RIGID SECTIONS AND SWIVEL JOINTS BETWEN THE END OF THE RISER AND THE LOWER BASE, ACCOMODATES HEAVE OF THE SHIP RELATIVE TO THE RISER AND FLEXIBLE PIPING BETWEEN THE TOWER BASE AND THE SHIP ACCOMMODATES PITCH AND ROLL OF THE SHIP RELATIVE TO THE RISER.
Inventors
- 👤 George W Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:18
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/01; E21B17/012; B; B63; B63B; B63B22/00; B63B22/02; B63B22/021; B63B22/023; E21B19/00; E21B19/002; E21B19/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |