Patent ID: 6840738
Filing Date: 2005-01-11
Classification: F03D,F05B,Y02E

Abstract:
1. A feathering turbine apparatus driven by fluid flow, comprising a turbine frame rotatable about a first axis that is substantially perpendicular to the direction of fluid flow; a plurality of fluid-driven impeller blades disposed substantially within the frame for orbitally rotating about the first axis; each of said blades having a blade axle about which the blade may pivot, each axle mounted pivotingly within the frame, the blade pivoting about a second axis of orientation substantially parallel to the first axis; a vane that rotates about a third axis for indicating direction of fluid flow; and a feathering mechanism, comprising: whereby, as the turbine rotates, the cam collar rotates about the cam and the rockers are displaced by the cam offset, the feathering mechanism thereby varying blade orientation during turbine rotation to maximize the torque obtained from fluid flow.