Patent ID: 9249778
Filing Date: 2016-02-02
CPC Classification: F03D,F05B,Y02B,Y02E

Claim Text:
1. A vertical axis turbine rotor blade arrangement for a wind power generator adapted to rotate around a vertical axis and comprising a rotor blade having a first and a second end and being pivotally connected to a pivot arm, said pivot arm having a first and a second end and being pivotally connected to a base member, said rotor blade is adapted to be displaced between an active position and a retracted position, said base member and said pivot arm defining a horizontal plane when said rotor blade is in said active position, said base member further being rotatable around a pole configured to extend in a first direction below said plane, wherein only said first end of said rotor blade is pivotally connected at said first end of said pivot arm and wherein said second end of said pivot arm is pivotally connected to said base member, so that when said rotor blade is in said active position, said rotor blade extends out and away from said plane in a direction substantially opposite of said first direction, above the pole and the base member, wherein said rotor blade and said pivot arm connected thereto has an L-form when said rotor blade is in said active position.