US4007700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple seafloor storage and supply system
Assignee: United States Department of the Navy
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Filing: 1975-10-28
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Granted: 1977-02-15
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Expires: 1995-10-28
Abstract
Abstract The mobile seafloor storage structure for storing POL (petroleum, oils, licants) comprising a pair of cylindrically-shaped enclosures having hemispherical-shaped end members. The two cylindrically-shaped enclosures are connected together by top, bottom and end members such that a center enclosure is formed between the pair of cylindrically-shaped enclosures. Various interconnections and related valves are utilized for moving POL, seawater, and gases from enclosure to enclosure thereby maneuvering the structure between the sea surface and the seafloor.
Inventors
- 👤 Harvey H. Haynes
- 👤 Norman D. Albertsen
- 👤 Lawrence F. Kahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:01
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/78; B63; B63B; B63B35/00; B63B35/28; B65D88/54; B65D88/58; B65D88/60; B65D88/62
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
218 words
A mobile seafloor storage structure for storing a storage fluid therein comprising: a. a plurality of cylindrically shaped enclosures having substantially hemispherical-shaped end members, said cylindrically shaped enclosures being adapted to contain said storage fluid; b. means disposed between at least two of said cylindrically shaped enclosures for forming a second enclosure, said second enclosure being adapted to contain said storage fluid; c. valve means for fluidically connecting each said cylindrically shaped enclosure to or fluidically disconnecting each said cylindrically shaped enclosure from said second enclosure such that said storage fluid may be utilized to shift both the center-of-gravity and the center-of-buoyancy of said seafloor storage structure; d. means for injecting said storage fluid into and removing said storage fluid from said cylindrical enclosures and said second enclosure; e. means disposed inside each said cylindrically shaped enclosure and inside said second enclosure for creating an upper compartment and a lower compartment therein, said upper compartment adapted to contain said storage fluid, said lower compartment adapted to contain seawater or a gas; f. first valve means for injecting seawater into and removing seawater from said lower compartment of each said cylindrically shaped enclosure and said second enclosure; g. second valve means capable of passing a gas into and out of said lower compartment of each said cylindrically shaped enclosure.
Claim 2
Dependent Claim
218 words
A mobile seafloor storage structure for storing a storage fluid therein comprising: a. a plurality of cylindrically shaped enclosures having substantially hemispherical-shaped end members, said cylindrically shaped enclosures being adapted to contain said storage fluid; b. means disposed between at least two of said cylindrically shaped enclosures for forming a second enclosure, said second enclosure being adapted to contain said storage fluid; c. valve means for fluidically connecting each said cylindrically shaped enclosure to or fluidically disconnecting each said cylindrically shaped enclosure from said second enclosure such that said storage fluid may be utilized to shift both the center-of-gravity and the center-of-buoyancy of said seafloor storage structure; d. means for injecting said storage fluid into and removing said storage fluid from said cylindrical enclosures and said second enclosure; e. means disposed inside each said cylindrically shaped enclosure and inside said second enclosure for creating an upper compartment and a lower compartment therein, said upper compartment adapted to contain said storage fluid, said lower compartment adapted to contain seawater or a gas; f. first valve means for injecting seawater into and removing seawater from said lower compartment of each said cylindrically shaped enclosure and said second enclosure; g. second valve means capable of passing a gas into and out of said lower compartment of each said cylindrically shaped enclosure.
Claim 3
Dependent Claim
30 words
The apparatus of claim 1 further including valve means third valve for venting said gas as said gas expands as said apparatus ascends from the seafloor to the sea surface.
Claim 4
Dependent Claim
14 words
The apparatus of claim 1 wherein said compartment creating means includes a flexible membrane.
Claim 5
Dependent Claim
30 words
The apparatus of claim 1 wherein said storage fluid injecting and removing means includes a pipeline connected to each said upper compartment through a respective conduit having a valve therein.
Claim 6
Dependent Claim
17 words
The apparatus of claim 1 wherein said cylindrically shaped enclosures are disposed with their longitudinal axes parallel.
Claim 7
Dependent Claim
36 words
The apparatus of claim 5 wherein each said cylindrically shaped enclosure is divided into a plurality of sub-enclosures by a plurality of respective circular bulkheads disposed perpendicular to said longitudinal axis of said cylindrically shaped enclosures.
Claim 8
Dependent Claim
13 words
The apparatus of claim 1 wherein said apparatus contains two cylindrically shaped enclosures.
Claim 9
Dependent Claim
24 words
The apparatus of claim 1 wherein the volume of said second enclosure is substantially equal to the volume of one said cylindrically shaped enclosure.
Claim 10
Dependent Claim
40 words
The apparatus of claim 1 wherein said apparatus further includes: a. ballast means located in one end of said cylindrically shaped enclosure such that said apparatus tilts in the water; and b. a lowering line attached to said second enclosure.
Claim 11
Independent Claim
139 words
A method of raising and lowering a mobile underwater seafloor storage structure comprising a pair of cylindrically shaped enclosures having hemispherical-shaped end members, said cylindrically shaped enclosures being connected by a top, bottom and side members such that a second enclosure is formed between said pair of cylindrically shaped enclosures, the longitudinal axes of said cylindrically shaped enclosures being parallel; comprising the steps of: a. filling both said cylindrically shaped enclosures with a storage fluid bearing said second enclosure empty; b. draining the storage fluid from one said cylindrically shaped enclosure into said second enclosure so that said cylindrically shaped enclosures are disposed vertically; c. attaching a lowering line to said structure; d. placing a ballast in one end of said cylindrically shaped enclosure such that said structure tilts in the water; and e. rendering said structure negatively buoyant.
Claim 12
Independent Claim
139 words
A method of raising and lowering a mobile underwater seafloor storage structure comprising a pair of cylindrically shaped enclosures having hemispherical-shaped end members, said cylindrically shaped enclosures being connected by a top, bottom and side members such that a second enclosure is formed between said pair of cylindrically shaped enclosures, the longitudinal axes of said cylindrically shaped enclosures being parallel; comprising the steps of: a. filling both said cylindrically shaped enclosures with a storage fluid bearing said second enclosure empty; b. draining the storage fluid from one said cylindrically shaped enclosure into said second enclosure so that said cylindrically shaped enclosures are disposed vertically; c. attaching a lowering line to said structure; d. placing a ballast in one end of said cylindrically shaped enclosure such that said structure tilts in the water; and e. rendering said structure negatively buoyant.
Claim 13
Dependent Claim
36 words
The method of claim 10 comprising the further steps of: a. lowering said structure to the seafloor; b. filling said drained cylindrically shaped enclosure with seawater such that said structure is firmly anchored to said seafloor.
Claim 14
Dependent Claim
45 words
The method of claim 11 further comprising the steps of: a. disposing valves on said storage fluid-filled, cylindrically shaped enclosure and said storage fluid-filled second enclosure such that when opened said storage fluid is automatically pumped to the sea surface due to a pressure differential.
Claim 15
Dependent Claim
67 words
The method of claim 12 further comprising the steps of: a. displacing the seawater in said seawater filled, cylindrically shaped enclosure with a gas rendering said structure positively buoyant such that a moment arm is created tending to dislodge said structure from the seafloor; b. venting the gas from said cylindrically shaped enclosure as the gas expands due to decreased pressure upon it as said structure ascends.
References Cited (Backward Citations)
US1201051A
Cited
US2720082A
Cited
US2731168A
Cited
US3322087A
Cited
US3477401A
Cited
US3708986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |