Patent ID: 7976267

Claim:
A helical turbine system comprising: at least two vertical rotatably supported helical vanes twisted around an axis; said at least two vertical rotatably supported helical vanes attached to a solid axial drive shaft; at least one rotational bearing attached to at least one end of said solid axial drive shaft; a first solid disc member attached to a top end of said at least two vertical rotatably supported helical vanes for redirecting axially flowing fluid into perpendicularly flowing fluid; a rotatable shroud enveloping said at least two vertical rotatably supported helical vanes comprises at least one windward fluid diverter attached between rotatable top and bottom panels for increasing fluid flow into said at least two vertical rotatably supported receding helical vanes; said rotatable shroud further comprises a windward fluid diverter attached between rotatable top and bottom panels for blocking and preventing fluid from hitting said at least two vertical rotatably supported oncoming helical vanes; said rotatable shroud further comprises a tail member attached between rotatable top and bottom panels on an opposite trailing fluid exiting side of said rotatable shroud, for maintaining windward orientation.