Aero gas turbine engine with speed reduction gearbox
US11280272B1 · kind B1 · utility
0Cited by
19References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2019 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Jun 10, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A lay shaft assembly for a speed reduction gearbox in a geared turbofan gas turbine engine, the lay shaft assembly having an output gear formed on a lay shaft as a single piece, and an input welded gear formed as a separate piece that is welded to the shaft in close proximity to the output gear. The output gear is machined and precision-ground prior to welding the input welded gear to the lay shaft so that the two gears can be located in close proximity. The input welded gear is precision-ground after the gear has been welded to the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.