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US Patent 8931285 Planetary gear system arrangement with auxiliary oil system

Patent 8931285 was granted and assigned to United Technologies on January, 2015 by the United States Patent and Trademark Office.

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Patent
Patent
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Patent attributes

Patent Applicant
United Technologies
United Technologies
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Current Assignee
United Technologies
United Technologies
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
89312850
Patent Inventor Names
Lawrence E. Portlock0
Michael E. McCune0
William G. Sheridan0
Date of Patent
January 13, 2015
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Patent Application Number
142668880
Date Filed
May 1, 2014
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Patent Citations Received
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US Patent 11885252 Planetary gear system arrangement with auxiliary oil system
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Patent Primary Examiner
Ehud Halberstam
Ehud Halberstam
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Patent abstract

In one exemplary embodiment, a gas turbine engine includes a fan, a speed reduction device driving the fan, and a lubrication system for lubricating components across a rotation gap. The lubrication system includes a lubricant input. A stationary first bearing receives lubricant from the lubricant input and has a first race in which lubricant flows. A second bearing for rotation is within the first bearing. The second bearing has a first opening in registration with said first race such that lubricant may flow from the first race through the first opening into a first conduit. The first bearing also has a second race into which lubricant flows. The second bearing has a second opening in registration with the second race such that lubricant may flow from the second race through the second opening into a second conduit. The first and second conduits deliver lubricant to distinct locations.

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