US 10,648,383 B2Granted

Planetary gear system arrangement with auxiliary oil system

AssigneeUnited Technologies Corporation

InventorsMichael E. McCune, William G. Sheridan, Lawrence E. Portlock

Life of this patent

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Abstract

A method of designing a gas turbine engine includes configuring a speed reduction device for driving a fan and configuring 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 the first race such that lubricant may flow from the first race through the first opening into a first conduit. The first bearing is configured to also include 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.

Claims6

Dependent claims

A method of designing a gas turbine engine comprising:

configuring a speed reduction device for driving a fan assembly surrounded by an outer housing;
configuring a lubrication system for lubricating components across a rotation gap, the lubrication system including a lubricant input, a stationary first bearing receiving lubricant from said lubricant input and having a first race ire which lubricant flows, and a second bearing for rotation within said First bearing, said second bearing having a first opening in registration with said first race such that lubricant may flow from said first race through said first opening into a first conduit;
and
configuring said first bearing to also include a second race into which lubricant flows, and said second bearing having a second opening in registration with said second race such that lubricant may flow from said second race through said second opening into a second conduit, with said first and second conduits delivering lubricant to distinct locations.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/621,406Filed 13 Jun 2017 · division
Priority: 12 Oct 2010
Published: US 2017/0276046 A128 Sep 2017
Granted: 12 May 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification29 codes

F01D 25/18
Component parts, details, or accessories, not provided for in, or of interest apart from, other groups: lubricating arrangements
F01D 25/16
Component parts, details, or accessories, not provided for in, or of interest apart from, other groups: arrangement of bearings; Supporting or…
F01N 11/00
Monitoring or diagnostic devices for exhaust-gas treatment apparatus
F02C 3/10
Having a turbine driving a compressor: with another turbine driving an output shaft but not driving the compressor

Family

Application12/902,525Parent of this continuation-in-part · filed 12 Oct 2010
Application13/428,491Parent of this continuation · filed 23 Mar 2012
Application14/266,888Parent of this division · filed 1 May 2014
US 8,813,469 B2Parent of this continuation-in-part · filed 26 Aug 2014
Application14/474,869Parent of this division · filed 2 Sep 2014
US 8,931,285 B2Parent of this division · filed 13 Jan 2015
US 2017/0276046 A1Pre-grant publication · published 28 Sep 2017
US 9,556,774 B2Parent of this division
US 9,995,174 B2Parent of this continuation
Application14/266,888Parent of this continuation
Application13/428,491Parent of this continuation-in-part
US 2012/0088624 A1Published application
US 2012/0192570 A1Published application
US 2014/0230452 A1Published application
US 2014/0369818 A1Published application
US 2020/0141297 A9Published application
US 9,677,420 B2Related patent
US 10,648,383 B2This patent

From the US filing history. Foreign family members aren’t listed.