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US 11,555,412 B2Granted
Lightweight journal support pin
AssigneeRaytheon Technologies Corporation
InventorsMichael E. McCune, William G. Sheridan, William P. Ogden
Life of this patent
Estimating the term…
Abstract
A journal support pin to support intermediate gears for use in gas turbine engine comprises a titanium body, and an outer surface outside of the titanium body having a surface hardness that is harder than the body. A gas turbine engine and a method of forming a journal support pin to support intermediate gears for use in gas turbine engine are also disclosed.
Claims11
A journal support pin to support intermediate gears for use in a gas turbine engine comprising:
- a titanium body, and an outer surface outside of said titanium body having a surface hardness that is harder than said body;
- said outer surface is provided by a coating;
- and
- oil supply holes extend from a central bore in said body through said coating.
1 more element
A gas turbine engine comprising:
- a fan and a fan drive turbine, said fan drive turbine driving said fan through a gear reduction;
- said gear reduction including a sun gear engaging intermediate gears and said intermediate gears engaging a ring gear, said intermediate gears being supported on journal support pins;
- said journal support pins having a titanium body and an outer surface outside of said titanium body having a surface hardness that is harder than said body, said outer surface provided by a coating;
- and
- oil supply holes extend from a central bore in said body through said coating.
2 more elements
Dependencies are inferred from the claim text.