|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||E02D-023/00 E02D-027/24 E02D-029/00|
|미국특허분류(USC)||405/195.1 ; 405/223.1 ; 405/224 ; 114/264 ; 114/265 ; 114/125|
|§371/§102 date||19990512 (19990512)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 32 인용 특허 : 32|
A precast, modular spar system (10) having a cylindrical open-ended spar of relatively uniform cross section. The spar has a freeboard section (50), a buoyancy section (70), and a ballast section (90). The sections are formed by joining arcuate segments and stacking the sections. A pressurizing system allows for the injection of air into the segments to vary the buoyancy of the modular spar system.
[ We claim:] [1.]1. A precast, modular spar system comprising:a. a cylindrical open-ended spar of relatively uniform cross section throughout its length and having a length such that its upper end extends above the water surface and its bottom end is subject to only minimal excitation forces caused by waves, said spar comprising a freeboard section, a buoyancy section, and a ballast section;b. a plurality of arcuate shaped segments having a middle tangential wall, at least two outer tangential walls, an outer radial wall, an inner radial wall, and a top ...