Patent ID: 8403636

Claim:
A turbine stage in a turbomachine, comprising: ring sectors arranged about a turbine impeller and suspended from a turbine casing by an annular support, wherein the annular support comprises a coupling device which couples the ring sectors and means for attachment to the turbine casing, connected by two coaxial annular walls connected to each other, one of said walls being located radially inward of the other, respectively inner and outer, the annular support having a V-shaped or U-shaped section and being able to be elastically deformed in a radial direction to absorb at least a portion of the deformations of the turbine casing in operation, wherein the annular support is formed in a single piece, wherein the coupling device includes two radial annular walls, respectively upstream and downstream, that are connected to one another by a cylindrical or frustoconical connecting wall, said inner annular wall being connected to a radially outer end of the upstream radial annular wall, wherein the inner annular wall of the two coaxial annular walls extends from the coupling device radially outward and in an upstream direction up to the outer annular wall of the two coaxial annular walls which extends radially outward and in a downstream direction, and wherein the inner annular wall of the two coaxial annular walls is aligned with the connecting wall of the coupling device.