The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2012
Filed:
Sep. 30, 2010
Christopher Charles Glynn, Lawrenceburg, IN (US);
Darek Tomasz Zatorski, Ft. Wright, KY (US);
Donald Scott Yeager, Hamilton, OH (US);
Nicholas Rowe Dinsmore, Cincinnati, OH (US);
Jeffrey Raymond Menard, Reading, OH (US);
Brandon Wayne Miller, Cincinnati, OH (US);
Christopher Charles Glynn, Lawrenceburg, IN (US);
Darek Tomasz Zatorski, Ft. Wright, KY (US);
Donald Scott Yeager, Hamilton, OH (US);
Nicholas Rowe Dinsmore, Cincinnati, OH (US);
Jeffrey Raymond Menard, Reading, OH (US);
Brandon Wayne Miller, Cincinnati, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
Axially spaced apart counter-rotatable forward and aft rows of forward and aft propellers mounted on forward and aft rotatable frames includes a flowpath passing through the forward and aft rotatable frames. Hydraulic rotary forward and aft pitch change actuators mounted on the aft rotatable frames are connected to and operable for controlling and setting pitch of the aft propellers. The pitch change actuators are mounted radially inwardly of the flowpath in a one to one ratio with forward and aft rotatable struts extending radially across the flowpath. One or more rotatable shafts extend through one or more of the rotatable struts and connect one or more of the pitch change actuators to one or more of the propellers. The pitch change actuators may be ganged together by unison rings having ring teeth engaging gear teeth on gears connected to the pitch change actuators or connected to the rotatable shafts.