Patent ID: 7748945

Claim:
An apparatus for sealing a turbine against leakage of a working fluid, comprising: at least one radially displaceable sealing ring slidably suspended between at least one set of axially displacable suspension devices and a downstream lateral surface of at least one slot in a stationary member of a turbine, wherein the radially displaceable sealing ring is coaxially disposed about a rotating member of the turbine from a stationary member of the turbine, in at least one slot of the stationary member of the turbine, which slot has an upstream lateral surface and a downstream lateral surface, and the radially displaceable sealing ring is slideably suspended from the stationary member of the turbine by the suspension devices, wherein the at least one set of axially displaceable suspension devices apply antiparallel forces to the upstream lateral surface of a head of the radially displaceable sealing ring, and to the downstream lateral surface of the head of the radially displacable sealing ring, wherein the radially displaceable sealing ring is radially displaceable, so that the radially displaceable sealing ring undergoes radial displacements that are coupled to radial displacements of the rotating member, and so that a design radial clearance is substantially maintained without damage to the apparatus or the turbine.