Pipe lay down apparatus
Abstract
Abstract D R A W I N G A METHOD AND APPARATUS FOR LAYING SUBSEA PIPELINES COMPRISING THE STEPS OF ATTACHING BUOYANT BODIES, CONSTRUCTED IN ACCORDANCE WITH THE PRESENT INVENTION, AT CALCULATED PREDETERMINED DISTANCES ALONG THE PIPELINE TO BE LAID, LOWERING THE LENGTH OF PIPE WITH THE BODIES ATTACHED SO THAT THE CURVATURE OF THE PIPELINE AS IT LEAVES THE SURFACE VESSEL, DOES NOT EXCEED A CALCULATED ANGLE, ATTACHING THE PIPELINE TO THE OCEAN FLOOR, AND CAUSING THE BUOYANT BODIES OF THE PRESENT INVENTION TO BE RELEASED AND RECOVERED. THE BUOYANT BODY IS OF A HOLLOW CONFIGURATION WITH SELF-CONTAINED MEANS FOR RELEASTING THE BUOYANT BODY FROM THE PIPE WHEN THE PIPE REACHES A SUBSTANTIALLY HORIZONTAL POSITIOIN ON THE SUBSEA FLOOR.
Inventors
- 👤 Arthur E Wilde
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |