Patent ID: 11879383
Assignee: ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  B  H  Y | IPC B  F  H

Claim 0:
1. A torque limiting device in a gas turbine engine, the gas turbine engine comprising:
an epicyclic gearbox including a ring gear;
a stationary structure of the gas turbine engine;
the torque limiting device comprising:
a torque bearing connecting structure connecting the ring gear to the stationary structure and forming a load bearing path between the ring gear and the stationary structure;
a mechanical fuse in the torque bearing connecting structure comprising an at least partially circumferential weakening of a wall of the torque bearing connecting structure;
a retention plate being L-shaped in cross section, including a first portion extending radially outwards from the torque bearing connecting structure and a second portion extending axially along the torque bearing connecting structure, the retention plate configured to control axial and radial positioning of a portion of the torque bearing connecting structure that has become free to move upon fracture of the mechanical fuse.