US3960100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized ship structure for slamming loads
Assignee: United States Department of the Navy
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Filing: 1975-06-02
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Granted: 1976-06-01
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Expires: 1995-06-02
Abstract
Abstract The underside of a semisubmerged ship or catamaran-type vessel's platform protected from the slamming loads created by impacting waves. Elongate flexible chambers are fashioned from a flexible fabric and are arranged in a side-by-side relationship on the platform's bottom. The flexible chambers first resiliently absorb the forces of the impacting waves and then translate these forces into tensile stresses borne by interposed, rigid, structural members. The flexible fabric chambers and rigid structural members do not overly load the platform yet do provide a higher degree of protection for the platform.
Inventors
- 👤 Richard B. Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:21
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/10; B63B1/107; B63B43/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
109 words
In a semisubmerged ship having a laterally extending platform supported above the water's surface by at least one water surface piercing strut member mounted on at least one elongate hull, an improvement therefor for reducing the effects of impacting waves is provided comprising: means carried on the underside of the laterally extending platform for resiliently absorbing the slamming loads of impacting waves; means carried on the underside of the laterally extending platform and upwardly of the resiliently absorbing means for pneumatically translating the slamming loads into tensile stresses; and means coupled between the resiliently absorbing means and the pneumatically translating means for transmitting the tensile stresses to the platform.
Claim 2
Dependent Claim
109 words
In a semisubmerged ship having a laterally extending platform supported above the water's surface by at least one water surface piercing strut member mounted on at least one elongate hull, an improvement therefor for reducing the effects of impacting waves is provided comprising: means carried on the underside of the laterally extending platform for resiliently absorbing the slamming loads of impacting waves; means carried on the underside of the laterally extending platform and upwardly of the resiliently absorbing means for pneumatically translating the slamming loads into tensile stresses; and means coupled between the resiliently absorbing means and the pneumatically translating means for transmitting the tensile stresses to the platform.
Claim 3
Dependent Claim
27 words
An improved semisubmerged ship according to claim 1 in which the resiliently absorbing means is a plurality of first elongate flexible panels having a semicircular cross-sectional configuration.
Claim 4
Dependent Claim
36 words
An improved semisubmerged ship according to claim 2 in which the pneumatically translating means is a plurality of second elongate flexible panels cooperating with the first elongate flexible panels to form a plurality of elongate chambers.
Claim 5
Dependent Claim
23 words
An improved semisubmerged ship according to claim 3 further including: a source of pressurized gas coupled to the elongate chambers for pressurizing same.
Claim 6
Dependent Claim
39 words
An improved semisubmerged ship according to claim 4 in which the means for transmitting is a plurality of rigid structural members secured to the platform and coupled to the first elongate flexible panels and the second flexible elongate panels.
Claim 7
Dependent Claim
27 words
An improved semisubmerged ship according to claim 5 in which individual ones of the rigid structural members are interposed between adjacent elongate chambers at diametrically opposed locations.
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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |