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SPACE PATENTS BY
Aerospace Assignees
Aerospace Inventors
Time Lines

Counter-torque device for a helicopter

Invented by: John M. Kebrle
Dallas, TX

James R. Andrews
Mansfield, TX

Justin Daw
Fort Worth, TX

Jim Hurdle
Fort Worth, TX

Paul Sherrill
Grapevine, TX

Jimmy C. Narramore
Bedford, TX

Sidney Xue
Colleyville, TX

Charles Hollimon
Forth Worth, TX

Dudley Smith
Arlington, TX

Bryce Docker
Arlington, TX

John T. Brieger
Colleyville, TX Applicant: Name City State Country Type Kebrle

Originally Assigned to: Bell Helicopter Textron Inc.
Hurst, TX
[Now assigned to . . .]

Issued:2014-02-04
Filed:2012-08-07
Application No:13568262
Examined by:Dinh; Tien

A ducted fan for a helicopter includes a transverse duct and a counter-torque device supported within the duct. The counter-torque device includes a rotor rotatably mounted within the duct and a stator fixedly mounted within the duct downstream from the rotor. The rotor includes a rotor hub having a rotor axis, and rotor blades extending from the hub. The Rotor blades have a modulated angular distribution about the rotor axis. The stator includes a stator hub, and a plurality of stator vanes distributed around the stator hub. The stator vanes are angularly modulated around the stator hub.

[pdf] U.S. Pat. No. 8,640,984

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This information is part of a study by Oasis Global, Inc. of all space inventions filed at the United States Patent and Trademark Office, and is provided for informational purposes only. It is not an endorsement of any particular assignee, inventor or invention. Although Peter A. Koziol represents inventors and assignees of space inventions he does not represent all of the inventors and assignees listed. The prosecuting attorney agent or firm for each patent is identified by the United States Patent and Trademark Office in the patent specfication, which can be viewed by clicking on the patent image or downloading the patent document. For more information regarding Mr. Koziol's background and experience, or to learn more about space inventions, please contact Mr. Koziol.

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