Patent ID: 7649275
Filing Date: 2010-01-19
Classification: F03B,F05B,H02P,Y02E

Abstract:
1. A subsurface power generating system comprising: a frame; a first electric generator supported by the frame, the first electric generator operably connected to a first vertical rotor; a second electric generator supported by the frame, the second electric generator operably connected to a second vertical rotor; a first louver operably connected to the first vertical rotor and including a front side, and a back side, and pivotable between a first position whereat the backside is in contact with a first pivot limiting structure, and a second position whereat the backside is not in contact with the first pivot limiting structure; and a second louver operably connected to the second vertical rotor and including a front side, and a back side, and pivotable between a third position whereat the backside is in contact with a second pivot limiting structure, and a fourth position whereat the backside is not in contact with the second pivot limiting structure, wherein the first louver pivots about a first pivot axis that intersects the first vertical rotor.