Lower attachment for trimmable horizontal stabiliser actuator
US12420911B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2023 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Dec 6, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D2045/0085
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
There is provided a lower attachment for a trimmable horizontal stabiliser actuator (THSA) for connecting the THSA to a flight control surface. The attachment includes: a nut assembly for providing a load path through the THSA to the flight control surface when the THSA is connected to the flight control surface. The nut assembly includes a nut for location on a screw shaft of the THSA, a failsafe plate for coupling to the flight control surface, and a transfer plate for transferring load between the failsafe plate and the nut. The nut assembly has a first unloaded configuration in which there is no contact between the nut and the transfer plate, and a second loaded configuration in which there is contact between a first pair of opposed surfaces of the nut and the transfer plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.