Vertical axis windmill

Details Vertical axis windmill Vertical axis windmill

1988-05-13

1989-04-18

Powell, Jr., Everette A.

Rotary kinetic fluid motors or pumps

With means for controlling casing or flow guiding means in...

415 3, 416117, F03D 304

Patent

active

048222399

ABSTRACT:
A vertical axis windmill wherein the blades pivot between a power delivery and a recovery position with air gates associated with a non-rotating chamber containing the windmill acting to preclude airflow over the blades while in the recovery position. The blades either include chambers therein configured to receive a fluid moveable between the chambers as dictated by rotational speed of the windmill, or the blades are connected in pairs with elevational motion of one blade to a power delivery position assists the other blade of the pair in returning from the power delivery position to the recovery position.

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Wind Machines, Repert Prepared for National Science Foundation, U.S. Government Printing Office Stock Number 038-000-00272-4.

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