US3969901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating breakwaters
Assignee: IHI Corp
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Filing: 1974-08-23
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Granted: 1976-07-20
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Expires: 1994-08-23
Abstract
Abstract A floating breakwater is disclosed which comprises a plurality of floating breakwater units interconnected with each other in side by side relation and anchored to the sea bottom with anchor cables or chains. Each floating breakwater units comprises a center float, a front and rear barrier joined thereto with connecting members in suitably spaced apart relation or directly joined to the center float so as to define the separated spaces therebetween. The pitching, heaving and surging of the floating breakwater may be minimized, and the waves of a relatively wide range of wave lengths may be effectively reflected and depressed or abated so that a safe and comparatively calm sea space may be provided behind the floating breakwater.
Inventors
- 👤 Tadashi Matsudaira
- 👤 Yoshihiro Mishina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:46
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/06; E02B3/062; Y; Y02; Y02A; Y02A10/00; Y02A10/11
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
A floating breakwater comprising a plurality of floating breakwater units interconnected in side by side relation with each other, each of said floating breakwater units including a float, a front and rear barrier joined to the front and rear sides of said float in forwardly and backwardly spaced apart relation therewith, respectively, and anchor cables for mooring said floating breakwater unit to anchor blocks.
Claim 2
Dependent Claim
64 words
A floating breakwater comprising a plurality of floating breakwater units interconnected in side by side relation with each other, each of said floating breakwater units including a float, a front and rear barrier joined to the front and rear sides of said float in forwardly and backwardly spaced apart relation therewith, respectively, and anchor cables for mooring said floating breakwater unit to anchor blocks.
Claim 3
Dependent Claim
40 words
A floating breakwater as defined in claim 1 wherein said plurality of floating breakwater units are interconnected side by side through connecting means which serve to prevent the adjacent floating breakwater units for colliding against and parting from each other.
Claim 4
Dependent Claim
42 words
A floating breakwater as defined in claim 1 wherein said front and rear barriers are directly joined to said float of each floating breakwater unit so that enclosed spaces may be defined between said floats and said front and rear barriers, respectively.
Claim 5
Dependent Claim
45 words
A floating breakwater as defined in claim 1 wherein inwardly extending bottom plates are attached to the lower side edges of said front and rear barriers so that the relative vertical motions between the sea water and said front and rear barriers may be restricted.
Claim 6
Dependent Claim
17 words
The floating breakwater of claim 3 wherein said front and rear barriers have a semi-elliptical cross-sectional configuration.
Claim 7
Dependent Claim
43 words
The floating breakwater of claim 1 wherein outwardly extending resisting plates are attached to the lower side edges of said front and rear barriers so that the relative vertical motion between the sea water and said front and rear barriers may be restricted.
Claim 8
Dependent Claim
43 words
The floating breakwater of claim 5 wherein inwardly extending bottom plates are attached to the lower side edges of said front and rear barriers so that the relative vertical motion between the sea water and said front and rear barriers may be restricted.
Claim 9
Dependent Claim
43 words
The floating breakwater of claim 5 wherein outwardly extending resisting plates are attached to the lower side edges of said front and rear barriers so that the relative vertical motion between the sea water and said front and rear barriers may be restricted.
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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |