HYBRID VENTILATOR
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United States of America Patent
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app pub date -
Feb 22, 2017
filing date -
Sep 23, 2004
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Abstract
A ventilator (10) comprises a ventilator stator (12) for mounting to a structure and a ventilator rotor (14) for mounting and rotation with respect to the stator. One or more wind drivable elements (44) are mounted to the ventilator rotor. A motor (20) is provided for operation between the ventilator rotor and ventilator stator for selective motor-driven rotation of the ventilator rotor.
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