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US3870003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage-vessel
Assignee: Individual
•
Filing: 1972-07-10
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Granted: 1975-03-11
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Expires: 1992-07-10
Abstract
Abstract A semi-submersible vessel for loading, storing and transporting liquid has a main hull which lies on the sea bed during loading, unloading and storing of the liquid. This hull is airtight and divided into cargo compartments having outer walls formed as portions of cylindrical shells. A slim superstructure including columns is rigidly connected to and extends upwardly from the main hull and supports a deck structure. The center of gravity of the vessel is always below the center of buoyancy thereof to provide the vessel with a total weight and a weight stability enabling it to rest on the sea bed without anchors, moorings or the like.
Inventors
- 👤 Olav Mo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:35
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/44; B63B35/4413; E; E02; E02B; E02B17/00; E02B17/02; E02B17/025; B63B1/00; B63B1/02; B63B1/04; B63B2001/044; E02B2017/0039; E02B2017/0056; E02B2017/0073; E02B2017/0086
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
163 words
A semi-submersible vessel for loading, storing and transportinG a liquid such as oil or the like, comprising: a main hull intended to lie on the sea bed during loading, unloading and storing of the liquid, said main hull being formed of a single monolithically formed air-tight hull which is divided into cargo compartments, the hull having outer walls formed as portions of cylindrical shells and a slim superstructure including columns rigidly supported by the hull, the columns extending upwardly from the said main hull to above the sea level when the main hull rests on the sea bed, said columns supporting a deck structure, the arrangement of the hull and the columns being such that the center of gravity of the vessel is always below the center of buoyancy of the vessel to provide the vessel with a total weight and a weight stability under all loading conditions to be able to rest on the sea bed without anchors, moorings or the like.
Claim 2
Dependent Claim
163 words
A semi-submersible vessel for loading, storing and transportinG a liquid such as oil or the like, comprising: a main hull intended to lie on the sea bed during loading, unloading and storing of the liquid, said main hull being formed of a single monolithically formed air-tight hull which is divided into cargo compartments, the hull having outer walls formed as portions of cylindrical shells and a slim superstructure including columns rigidly supported by the hull, the columns extending upwardly from the said main hull to above the sea level when the main hull rests on the sea bed, said columns supporting a deck structure, the arrangement of the hull and the columns being such that the center of gravity of the vessel is always below the center of buoyancy of the vessel to provide the vessel with a total weight and a weight stability under all loading conditions to be able to rest on the sea bed without anchors, moorings or the like.
Claim 3
Dependent Claim
163 words
A semi-submersible vessel for loading, storing and transportinG a liquid such as oil or the like, comprising: a main hull intended to lie on the sea bed during loading, unloading and storing of the liquid, said main hull being formed of a single monolithically formed air-tight hull which is divided into cargo compartments, the hull having outer walls formed as portions of cylindrical shells and a slim superstructure including columns rigidly supported by the hull, the columns extending upwardly from the said main hull to above the sea level when the main hull rests on the sea bed, said columns supporting a deck structure, the arrangement of the hull and the columns being such that the center of gravity of the vessel is always below the center of buoyancy of the vessel to provide the vessel with a total weight and a weight stability under all loading conditions to be able to rest on the sea bed without anchors, moorings or the like.
Claim 4
Dependent Claim
163 words
A semi-submersible vessel for loading, storing and transportinG a liquid such as oil or the like, comprising: a main hull intended to lie on the sea bed during loading, unloading and storing of the liquid, said main hull being formed of a single monolithically formed air-tight hull which is divided into cargo compartments, the hull having outer walls formed as portions of cylindrical shells and a slim superstructure including columns rigidly supported by the hull, the columns extending upwardly from the said main hull to above the sea level when the main hull rests on the sea bed, said columns supporting a deck structure, the arrangement of the hull and the columns being such that the center of gravity of the vessel is always below the center of buoyancy of the vessel to provide the vessel with a total weight and a weight stability under all loading conditions to be able to rest on the sea bed without anchors, moorings or the like.
Claim 5
Dependent Claim
22 words
A vessel according to claim 1, wherein the hull includes a series of longitudinally extending cells, and including bulkheads extending transversely thereacross.
Claim 6
Dependent Claim
22 words
A vessel according to claim 2, wherein said cells are cylindrical and are secured to each other only along lines of contact.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |