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US3899990A
Expired / Lapsed
US
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Systems for anchoring ships at sea
Assignee: EMH
•
Filing: 1973-07-16
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Granted: 1975-08-19
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Expires: 1993-07-16
Abstract
Abstract The anchoring system includes an arm hinged on a base fixed to the sea-bed, this arm being capable of resting at the bottom of the sea in the position for which there is no anchoring. For anchoring, the arm must be raised, which takes place by a buoy, which is of adjustable buoyancy controlled by remote control, such as through a pneumatic pipeline. When the operation is terminated, the buoy is again allowed to fill with water and drop with the arm to the sea-bed. The arm is spared the effects of swell in both the lowered and raised positions and can thus be of light structure. The invention is particularly useful for anchoring oil tankers.
Inventors
- 👤 Claude Lecomte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:10
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/20; E02B3/24; B; B63; B63B; B63B22/00; B63B22/02; B63B22/021; B63B22/023
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
261 words
A device for the surface mooring of a ship on a body of water comprising: a. a base anchored to the bottom of the body of water; b. an arm having a free end with the other end pivotally connected to the base; c. a hollow interior buoy secured to the free end of the arm so that when the buoy is floating at the surface of the water substantially all of the arm is normally below the surface and extends diagonally to the base, said buoy and arm having means for mooring a ship thereto; d. means on the buoy and arm for ballasting and deballasting the buoy so as to arcuately move the free end of the arm fRom an upper position near the surface of the water to a lower position near the bottom; e. said means for the ballasting and deballasting comprising: a pipe for fluid coming from a distant control station and capable of being pressurized or discharged, said pipe extending along the arm and connected to the buoy to be in communication with its interior, a hole formed in the bottom of the buoy to establish communication between the interior of the buoy and the body of water, at least one normally open valve at the upper part of the buoy positioned to form a communication between the buoy interior and the ambience, this valve being connected to the pipe to be actuated by said pressure so as to be closed when the pipe is pressurized and to open when the pipe is not pressurized.
Claim 2
Independent Claim
261 words
A device for the surface mooring of a ship on a body of water comprising: a. a base anchored to the bottom of the body of water; b. an arm having a free end with the other end pivotally connected to the base; c. a hollow interior buoy secured to the free end of the arm so that when the buoy is floating at the surface of the water substantially all of the arm is normally below the surface and extends diagonally to the base, said buoy and arm having means for mooring a ship thereto; d. means on the buoy and arm for ballasting and deballasting the buoy so as to arcuately move the free end of the arm fRom an upper position near the surface of the water to a lower position near the bottom; e. said means for the ballasting and deballasting comprising: a pipe for fluid coming from a distant control station and capable of being pressurized or discharged, said pipe extending along the arm and connected to the buoy to be in communication with its interior, a hole formed in the bottom of the buoy to establish communication between the interior of the buoy and the body of water, at least one normally open valve at the upper part of the buoy positioned to form a communication between the buoy interior and the ambience, this valve being connected to the pipe to be actuated by said pressure so as to be closed when the pipe is pressurized and to open when the pipe is not pressurized.
Claim 3
Dependent Claim
47 words
The device of claim 1, comprising, in addition to said valve an additional valve at the base of the buoy connected to form a communication with the body of water, this valve being closed when the pipe is pressurized and opened when the pipe is not pressurized.
Claim 4
Dependent Claim
18 words
The device of claim 1 in which said pipe is connected to the buoy through a non-return device.
References Cited (Backward Citations)
US1373329A
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US1488067A
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US2955626A
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US3472293A
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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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |