US Patent 8484942 Planetary gear system arrangement with auxiliary oil system
Patent 8484942 was granted and assigned to United Technologies on July, 2013 by the United States Patent and Trademark Office.
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Patent abstract
A gas turbine engine has a fan, first and second compressor stages, first and second turbine stages. The first turbine stage drives the second compressor stage as a high spool. The second turbine stage drives the first compressor stage as part of a low spool. A gear train drives the fan with the low spool, such that the fan and first compressor stage rotate in the same direction. The high spool operates at higher pressures than the low spool. A lubrication system is also disclosed.
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US Patent 08484942 Planetary gear system arrangement with auxiliary oil system US Patent 8484942 Planetary gear system arrangement with auxiliary oil system
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Patent Number
0848494200
Patent Number
848494200
Edits on 5 Apr, 2023
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
084849420
Date of Patent
July 16, 2013
0Patent Application Number
134836570
Date Filed
May 30, 2012
0Patent Primary Examiner
Edits on 28 Sep, 2022
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
084849420
Date of Patent
July 16, 2013
0Patent Application Number
134836570
Date Filed
May 30, 2012
0Patent Primary Examiner
Edits on 17 Dec, 2021
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US Patent 08484942 Planetary gear system arrangement with auxiliary oil system
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
08484942
Date of patent
July 16, 2013
Patent application number
13483657
Date Filed
May 30, 2012
Patent primary examiner
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