Patent ID: 6916153

Claim:
A guiding grid of variable geometry comprising: a turbine housing ( 2 ) including an axial outlet pipe ( 10 ); a plurality of guiding vanes ( 7 ) arranged in said housing ( 2 ) in angular distances around a central axis (R) in an axially extending vane space of a predetermined axial distance, each vane ( 7 ) being pivotal about an associated pivot axis ( 8 ) in relation to said central axis (R) to form a nozzle of variable cross-section between each pair of adjacent vanes ( 7 ); a generally annular nozzle ring ( 6 ) for supporting said vanes ( 7 ) for pivoting about their respective said pivot axis ( 8 ), said nozzle ring ( 6 ) forming a first axial limitation of said vane space; a unison ring ( 5 ) pivotable around said central axis (R) relative to said nozzle ring ( 6 ), said unison ring ( 5 ) being operatively connected to said vanes ( 7 ) in order to pivot said vanes ( 7 ) about their pivot axis ( 8 ) when said unison ring ( 5 ) is pivoted; a disk ( 29 ) with a central opening, said disk connected to and spaced from said nozzle ring ( 6 ) at an axial distance corresponding to said predetermined axial distance relative to the central axis (R) to form a second axial limitation of said vane space, and a sleeve ( 45 ) extending through said disk ( 29 ) central opening, engaging said disk ( 29 ), and extending into and attaching to said turbine housing axial outlet pipe ( 10 ) thereby fixing the guiding vanes ( 7 ), nozzle ring ( 6 ) and disk ( 29 ) to the turbine housing ( 2 ).