Gas turbine engine gear train
US8858388B2 · kind B2 · utility
11Cited by
23References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2011 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Dec 30, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2057/085
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An epicyclic gear train includes a carrier that supports star gears that mesh with a sun gear. A ring gear surrounds and meshes with the star gears. The star gears are supported on respective journal bearings. Each of the journal bearings includes a peripheral journal surface and each of the star gears includes a radially inner journal surface that is in contact with the peripheral journal surface of the respective journal bearing. The epicyclic gear train has a gear reduction ratio of greater than or equal to about 2.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.