Patent ID: 7575409

Claim:
An apparatus comprising: a mechanical housing; an annular member coupled to and disposed within said mechanical housing, said annular member including a segmented portion positioned between a fore hoop continuous portion and an aft hoop continuous portion; a plurality of blade tracks coupled to and moveable with said segmented portion, each of said plurality of blade tracks having a surface that defines a portion of a working fluid flow path; a rotatable structure including a plurality of blades disposed within said working fluid flow path, each of said plurality of blades having a blade tip spaced from said surface of the plurality of blade tracks to define a blade tip clearance; a split control ring located within said mechanical housing and extending around said annular member; at least one actuator coupled with said mechanical housing and said split control ring; a plurality of load transfer members located between and abutting said annular member and said split control ring; and said at least one actuator being operable to place the split control ring in tension and transmit a force through the plurality of load transfer members to said segmented portion and move said segmented portion and the plurality of blade tracks.