Patent ID: 7407368

Claim:
A shroud segment for being incorporated in a gas turbine engine so as to suppress influence of hot combustion gas on a turbine case, the turbine case having a groove and a hook for engagement with the shroud segment, comprising: a back plate formed in an arc shape, a front end of the back plate being supported by the groove so as to allow displacement in an axial direction of the gas turbine engine; a slot circumferentially formed on an outer surface of the back plate, the slot being engaged with the hook so as to be immovable in the axial direction; and a touching member integrally formed on an inner surface of the back plate for touching with a rotating turbine blade; wherein the slot is so dimensioned as to satisfy an inequality of v<t≦(v +0.1 mm) to retain tight contact with the hook without having a C-clip, where v is a length of the hook and t is a width of the slot.