Vertical axis wind engine

Details Vertical axis wind engine Vertical axis wind engine

2007-08-21

2007-08-21

Edgar, Richard A. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

With means positioning fluid current driven impeller...

Feathering cycle related to flow direction

C416S041000, C416S140000, C415S004200

Reexamination Certificate

active

11022875

ABSTRACT:
The present invention is to provide a vertical axis wind engine comprising at least one arm each having its center rotatably coupled to a vertical axis mounted on a base on the ground, each pair of the upper and lower arms adapted to define an airfoil receiving space for pivotably mounting an airfoil by pivot pins thereof; and at least one elastic stop member each provided on the arm proximate the airfoil and spaced from the pivot pins, each stop member adapted to limit a pivot angle of the airfoil and lift the pivot limitation for allowing the airfoil to pivot when the airfoil experiences a wind force larger than a maximum resistance force thereof, preventing the components of the wind engine from being damaged by strong wind or when the wind engine is operating in high speed.

REFERENCES:
patent: 4406584 (1983-09-01), Stepp
patent: 4494007 (1985-01-01), Gaston
patent: 4496283 (1985-01-01), Kodric
patent: 6779966 (2004-08-01), Smith, II
patent: 2668205 (1992-04-01), None
patent: 2000233 (1979-01-01), None

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