Ships – Building
Patent
1978-12-11
1981-04-28
Butler, Douglas C.
Ships
Building
114 68, B63B 300
Patent
active
042638623
ABSTRACT:
The construction of marine vessels comprised of light-weight re-enforced concrete embodying built-in buoyant elements such as closed-cell foam cores, structural steel rods, tendons, and the like, wherein the inner and outer concrete skins are composite with ribs to increase structural strength and stability so as to provide a relatively simple vessel; e.g., ships, tankers, floating piers or breakwaters, barges, etc.
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patent: 2454403 (1948-11-01), Palmieri
patent: 3324814 (1967-06-01), Yee
patent: 3631831 (1972-01-01), Sutherland
patent: 3753539 (1973-08-01), Moore
patent: 3828708 (1974-08-01), Gerwick, Jr.
patent: 3844239 (1974-10-01), McLaughlin et al.
patent: 3883911 (1975-05-01), Moore
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