Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
John Anthony Mohr0
Date of Patent
April 25, 2006
0Patent Application Number
109013960
Date Filed
July 23, 2004
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A counter rotating ducted fan having a permanent magnet drive. comprising a ducted housing having an iron core stator and a pair of counter rotating propeller blades rotationally mounted on a propeller shaft positioned axially within the housing Each of the propeller blades includes a plurality of individual propeller blades of an even number. Permanent magnets are mounted in permanent magnet insertion holes located at the tip of each of the individual propeller blades. When excited by an electrical current a pair of excitation windings mounted within the iron core stator control the rotational speed and direction of the pair of counter rotating propeller blades.
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