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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0613089 (1984-05-22) |
우선권정보 | GB-0014405 (1983-05-25) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 13 인용 특허 : 6 |
A wind turbine having the tips of the blades pivotable to a position in which they act as brakes to slow the turbine down. The pivoting is caused by relative axial movement of the tip and main blade portions which is caused by the action of a spring. The spring action is normally overcome by a hydra
A wind turbine comprising: (a) a plurality of blades, (b) variable pitch portions on at least two of said blades, (c) said variable pitch portions being movable between normal operating positions and altered pitch positions and being effective when in said altered pitch positions to cause the speed
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