Wind electric plant
Patent
·
OSTI ID:5243724
A multiblade, wind-driven, variable pitch propeller is used in a wind electric plant for the generation of electrical power from wind forces, and the propeller is rotatable in a plane at an angle to the tower axis, enabling larger propellers to be used without propeller-tower interference and also reducing the distance between the propeller and gear case. A snubber arrangement is provided on the propeller blade return springs to slow the governor action and prevent abrupt pitch changes and damaging flutter of the blades, and a self-centering, double-acting pivot washer is provided between the propeller blades and the return springs to ensure free pivoting and long life of the spring connecting bolts. Adjustable positive blade stop bolts are engaged directly between the hub and the propeller blades to limit return movement thereof.
- Assignee:
- TIC; ERA-03-030706; EDB-78-059399
- Patent Number(s):
- US 4068131
- OSTI ID:
- 5243724
- Country of Publication:
- United States
- Language:
- English
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